Weird Issue with 2018 Audi Q5 heating system.

[Thatguy]

All,
Thanks is advance for any advice in this and i apologize if . My Q5 has 60k on the clock. Has been flawless up til this point but as the Temps dropped this year my wife noted that the heat has been nonexistant.

I Ran VCDS it and found zero faults on the engine and auto HVAC.
However when I bring up advanced measuring values I have something interesting IDE 00194 coolant temperature at Radiator out put specified value: - 48C

That seems really odd to me.

The IDE 00194 coolant temperature at Engine output read 98.2 C

In addition and likely the actual reason for the lack of heating is the heater core isolation valve located under the cowl at the fire wall is electronically controlled and read no voltage and was closed.
This isolation valve has the coolant inlet and outlet. One side was hot and the other cold.

I'm wondering if there is a connection between a low temp being read or specified and the valve being closed even when the heating system on the interior is calling for over 80 degrees F

Thoughts?


Thanks in advance

 

[PetrolDave]

Please post an Auto-Scan so we can see how your Q5 is equipped and configured.

 

[Thatguy]

The scan below is from the 16th. since this scan after clearing the codes it now shows no code on the HVAC system, or engine as mentioned the other night.
i ran output tests on the recirc damper and afterwards the code has not returned. Thanks again for your help. i apologize in advance if im an idiot.

Wednesday,16,November,2022,20:53:14:41174
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 22.9.0.0 (x64)
Data version: 20220830 DS341.0
www.Ross-Tech.com


VIN: WA1CNAFY2J2031901   License Plate: MOMS Q5
Mileage: 110260km-68512mi   Repair Order:



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type  FY-AU49 (8W6)
Scan: 01 02 03 08 09 15 16 17 19 22 29 36 39 3C 42 44 46 47 52 5F
          6C 6D 74 81 82 A5 BB BC CA CF D6 D7

VIN: WA1CNAFY2J2031901   Mileage: 110260km-68512miles

01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: Malfunction 0010
16-Steering wheel -- Status: Malfunction 0010
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
22-AWD -- Status: OK 0000
29-Left Light -- Status: INTERFACE NOT COMPATIBLE
36-Seat Mem. Drvr -- Status: OK 0000
39-Right Light -- Status: INTERFACE NOT COMPATIBLE
3C-Lane Change -- Status: Malfunction 0010
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010
6C-Back-up Cam. -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
74-Chassis Control -- Status: Malfunction 0010
81-Gear Shift -- Status: OK 0000
82-Head Up Display -- Status: OK 0000
A5-Frt Sens. Drv. Assist -- Status: OK 0000
BB-Door Rear Drv -- Status: OK 0000
BC-Door Rear Pass -- Status: OK 0000
CA-Sunroof -- Status: OK 0000
CF-Lane Chge Asst 2 -- Status: OK 0000
D6-Light Ctrl Left 2 -- Status: INTERFACE NOT COMPATIBLE
D7-Light Ctrl Right 2 -- Status: INTERFACE NOT COMPATIBLE
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-DAYB)       Labels:. 06K-907-425-V1.clb
   Part No SW: 80A 906 259 A    HW: 06L 907 425 C
   Component: 2.0l R4 TFSI  H15 0003 
   Revision: --H15---    CVN: CA84BD7C
   Coding: 2A6500322526012E74280000000000000000000000000000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_ECM20TFS02080A906259A 001004
   ROD: EV_ECM20TFS02080A906259A.rod
   VCID: 2959BCBC4859F4C534-807C
   VINID: 9D10537915A909A0800C1240041A86DE8D

2 Faults Found:
17178 - Databus
          U1123 00 [032] - Received Error Message
          Intermittent - Not Confirmed - Tested Since Memory Clear

23039 - Implausible Data Received from ABS Control Module
          U0415 00 [032] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels:| 0CJ-927-156.clb
   Part No SW: 80A 927 155 AJ    HW: 0CJ 927 156
   Component: 0CJ 20TFSINAR H04 0001 
   Revision: --H04---    Serial number: 0000000651 CVN: 9FDB4184
   Coding: 000001
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_TCMDL382021 002027
   ROD: EV_TCMDL382021_AU49.rod
   VCID: 71E994DCA009CC05BC-8024

   MTF pump:
   Subsystem 1 - Part No SW: 0CK 927 152 AA    HW: 0CK 321 281 K
   Component: V553 MTFP  0C4 0572
   Serial number: 75117071170131000272

2 Faults Found:
20918 - System Voltage
          P0562 00 [032] - Too Low
          Intermittent - Not Confirmed - Tested Since Memory Clear

22301 - Electric Pump 2 for Transmission
          P276B 00 [032] - Supply Voltage too Low
          Intermittent - Not Confirmed - Tested Since Memory Clear


-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 8W0-907-379-PLU-V1.clb
   Part No SW: 80A 907 379 B    HW: 80A 907 379
   Component: ESP9 Plus     H11 0766 
   CVN: C2A13B20
   Coding: 4CAA40BE28A50A9791A74891287E5292E4259A320214508912144A4927A459
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_ESP9BOSCHCMP 002013
   ROD: EV_ESP9BOSCHCMP_004_AU49.rod
   VCID: 2E534FA071B793FDE1-807A

5 Faults Found:
352772 - System Voltage
          P0562 00 [032] - Too Low
          Intermittent - Not Confirmed - Tested Since Memory Clear

143360 - Function Restricted due to Insufficient Voltage
          U1400 00 [032] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Not Confirmed - Tested Since Memory Clear

331008 - Function Restricted due to Insufficient Voltage
          U1400 00 [032] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Not Confirmed - Tested Since Memory Clear

415488 - TPMS Warning; Front Left Tire
          C1055 00 [032] - Flat
          Intermittent - Not Confirmed - Tested Since Memory Clear

419328 - TPMS Warning; Front Right Tire
          C1057 00 [032] - Flat
          Intermittent - Not Confirmed - Tested Since Memory Clear


-------------------------------------------------------------------------------
Address 08: Auto HVAC (E87)       Labels:* None
   Part No SW: 80A 820 043 G    HW: 80A 820 043 G
   Component: Klima Zone 3  H32 0095 
   Coding: 640809095548010D10040100080000000000000000000000000000000000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AirCondiBHTCAU491 001013
   ROD: EV_AirCondiBHTCAU491.rod
   VCID: 2149A49C30693C856C-8074

   Fresh air blower control module (front):
   Subsystem 1 - Part No SW: 4M1 820 021 A    HW: 4M1 820 021 A
   Component: J126 FLuftV  H08 0003
   Serial number: 00000000000001613236

   Humidity sensor: exterior:
   Subsystem 2 - Part No SW: 4H0 907 658 A    HW: 4H0 907 658 A
   Component: AQ_Hum_Sensor  H01 0006
   Serial number: AA5903A880PAG0MUFU02

   Rear air conditioning block 1:
   Subsystem 3 - Part No SW: 80A 919 158 A    HW: 80A 919 158 A
   Component: E265 Kli Fond  H40 0080

1 Fault Found:
328003 - Motor for Recirculation Flap
          B1092 07 [008] - Mechanical Failure
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 60
                    Mileage: 109665 km
                    Date: 2022.11.13
                    Time: 09:58:54

                    Recirc. air flap motor: spec.value: 9699
                    Recirculation air flap motor: actual value: 11571
                    System run time-Engine running time: 270 s
                    System run time-Terminal 15 on: 271 s
                    Recirculation air flap motor: diagnostic-Last operating state: No routine started
                    Recirculation air flap motor: diagnostic-Operating condition: Blocking handling
                    Voltage terminal 30: 13.06 V
                    Outside temperature: 6.50 °C


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:* Redir Fail!
   Part No SW: 8W0 907 063 CG    HW: 8W0 907 063 BG
   Component: BCM1 MLBevo   H13 0267 
   Coding: 07500363E0081CCD051551199C2E18B9110B3D080000000000000000200016010A690122025709
   Shop #: WSC 15927 005 1048576
   ASAM Dataset: EV_BCM1BOSCHAU736 018006
   ROD: EV_BCM1BOSCHAU736_018_AU49.rod
   VCID: 020BCB1095AFC79D55-8056

   Wiper motor control module:
   Subsystem 1 - Part No SW: 80B 955 119     HW: 80B 955 119
   Component: 426 LL 170407  040 0570
   Serial number: 00000001703212101785
   Coding: 5FC7F7

   Rain/Light Recognition Sensor:
   Subsystem 2 - Part No SW: 81A 955 555 A    HW: 81A 955 555
   Component: G397_RLFSS  H06 0002
   Serial number: 20435525X81A955555A0
   Coding: 02006E

   Light switch:
   Subsystem 3 - Part No SW: 4M0 941 531 AB    HW: 4M0 941 531 AB
   Component: E1 - LDS  H06 0008
   Serial number: 14 07 2017  71950183

   Garage door opener control module:
   Subsystem 4 - Part No SW: 4M0 907 410 A    HW: 4M0 907 410 A
   Component: USHL5  H08 0050
   Serial number: 0000009600363Z0FUA02
   Coding: 350000

   Garage door opener control head:
   Subsystem 5 - Part No SW: 4M0 959 719 A    HW: 4M0 959 719 A
   Component: GTO BF  H01 0010
   Serial number: 20170630122315 00407

   Automatic dimming interior mirror:
   Subsystem 6 - Part No SW: 8W0 857 511 B    HW: 8W0 857 511 B
   Component: Y7_Innenspieg  H01 0002
   Serial number: GX1CE126061723610723
   Coding: 030000

   Interior Light Module:
   Subsystem 7 - Part No SW: 80A 947 135 AN    HW: 80A 947 135
   Component: Dachmodul Q5  H31 0310
   Serial number: Q00014173          
   Coding: 0D0101

   Control head for driving and comfort functions:
   Subsystem 8 - Part No SW: 8W0 925 301 BD    HW: 8W0 925 301 BD
   Component: SL-B9/Q5NF  H17 0010
   Serial number: 2617000133132003   
   Coding: 000000

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 80A-959-655.clb
   Part No SW: 80A 959 655 L    HW: 80A 959 655 L
   Component: AirbagVW30    023 0513 
   Serial number: 003W1M00R9S-
   Coding: AECCFCC000800000A000003FF20C40000065
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AirbaVW31SMEAU65x 001006
   ROD: EV_AirbaVW31SMEAU65x_AU49.rod
   VCID: 3C7775E8B7CB716D5F-8068

   Left seat belt tensioner:
   Subsystem 1 - Part No SW: 4M0 980 945 B    HW: 4M0 980 945 B
   Component: BeltPretRevFL  306 2033
   Serial number: 80A857705F0137R00296
   Coding: 80000D

   Right seat belt tensioner:
   Subsystem 2 - Part No SW: 4M0 980 946 B    HW: 4M0 980 946 B
   Component: BeltPretRevFR  306 2033
   Serial number: 80A857706F0137R00915
   Coding: 80000D

   Seat occupied recognition passenger side:
   Subsystem 3 - Part No SW: 4M0 959 339     HW: 4M0 959 339
   Component: BF-Gewichtss.  H11 0022
   Serial number: IBH0000J170007K8E50+
   Coding: 303033

   Crash sensor for side airbag: driver side:
   Subsystem 4 - Part No SW: -----------    HW: 480 001 505 17
   Component: SideSensor_Df  001 0887
   Serial number: 3570000000027A11B329
   Coding: 2D2D2D

   Front Passenger's Side Airbag Crash Sensor:
   Subsystem 5 - Part No SW: -----------    HW: 480 001 505 17
   Component: SideSensor_Pf  001 0887
   Serial number: 358000000009B4A4F32V
   Coding: 2D2D2D

   Rear Side Airbag Crash Sensor (on driver's side):
   Subsystem 6 - Part No SW: -----------    HW: 480 031 505 17
   Component: SideSensor_Dr  002 0149
   Serial number: 351000C2480A483089C3
   Coding: 2D2D2D

   Passenger side rear thorax airbag crash sensor:
   Subsystem 7 - Part No SW: -----------    HW: 480 031 505 17
   Component: SideSensor_Pr  002 0149
   Serial number: 352000C248020D201D6U
   Coding: 2D2D2D

   Crash sensor for front airbag: driver side:
   Subsystem 8 - Part No SW: -----------    HW: 480 032 905 17
   Component: FrontSensor_D  002 0149
   Serial number: 355000C24EDDD9914ED5
   Coding: 2D2D2D

   Crash sensor for front airbag: front passenger side:
   Subsystem 9 - Part No SW: -----------    HW: 480 032 905 17
   Component: FrontSensor_P  002 0149
   Serial number: 356000C24ED615811EBK
   Coding: 2D2D2D

   Central crash sensor X/Y:
   Subsystem 10 - Part No SW: -----------    HW: 480 022 103 17
   Component: CentrSensorXY  000 0108
   Serial number: I0O0001A1247F123839M

1 Fault Found:
9859568 - Passenger Airbag Status Indicator
          B1671 F0 [008] - Function Restriction due to Under-Voltage
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 92331 km
                    Date: 2022.05.18
                    Time: 10:15:07


-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels: 4M0-907-129.clb
   Part No SW: 80A 907 129 AT    HW: 80A 907 129 AT
   Component: Lenks.Modul   H02 0003 
   ASAM Dataset: EV_SMLSKLOAU736 007012
   ROD: EV_SMLSKLOAU736_007_AU49.rod
   VCID: 7AFBB3F0FD7F8F5D0D-802E

1 Fault Found:
7340800 - Temperature Sensor for Heated Steering Wheel
          B1455 04 [008] - Internal System Fault
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 5
                    Reset counter: 66
                    Mileage: 106483 km
                    Date: 2022.10.20
                    Time: 09:30:12

                    Freeze_Frame_Heated_Steering_Wheel-Current_Average: 0.00 A
                    Freeze_Frame_Heated_Steering_Wheel-Current_Peak: 0.00 A
                    Freeze_Frame_Heated_Steering_Wheel-Operation_time_counter: 121694 min
                    Freeze_Frame_Heated_Steering_Wheel-PWM_Duty_Cycle: 0 %
                    Freeze_Frame_Heated_Steering_Wheel-Steeringwheel_Temperatur_Raw_Busvalue: 0 °
                    Freeze_Frame_Heated_Steering_Wheel-Voltage_12V: 14967.19 mV
                    Freeze_Frame_Heated_Steering_Wheel-Voltage_5VS: 4914.84 mV
                    Freeze_Frame_Heated_Steering_Wheel-Voltage_at_sensor: 2.00 V
                    Freeze_Frame_Heated_Steering_Wheel-Voltage_Output_Power_Switch: 1 bit


-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:* Redir Fail!-SRI2
   Part No SW: 8W5 920 890 D    HW: 8W5 920 890 D
   Component: FBenUSA       H18 0371 
   Coding: 09E68EC5B888CF05022369601800000008000000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_DashBoardAU736 001027
   ROD: EV_DashBoardAU736_AU49.rod
   VCID: 44870D08CF3B09AD27-8010

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:* None
   Part No SW: 8W6 907 468 E    HW: 8W6 907 468 E
   Component: Gateway       H42 0116 
   Revision: 6B020002    Serial number: 0286B074917519
   Coding: 03010001000006402907000000590030CCBA0007100000000150000000000000
   Shop #: WSC 15927 005 1048576
   GVL: 01D03C080800000040DC08000002C800110C0000000000000000000000000000
   ASAM Dataset: EV_CGateCONTIAU491 003092
   ROD: EV_CGateCONTIAU491_003_AU49.rod
   VCID: 4C972528E76BC1EDEF-8018

   Multifunction steering wheel control module:
   Subsystem 1 - Part No SW: 80A 951 523 E    HW: 80A 951 523 E
   Component: J453 MFL  H06 0002
   Serial number: 20170516101500 00119

   Battery Monitoring Control Module:
   Subsystem 2 - Part No SW: 8S0 915 181 C    HW: 8S0 915 181 C
   Component: J367-BDMHella  H10 9070
   Serial number: 4788385200         

1 Fault Found:
8519684 - 12V Electrical System
          C11CB 01 [008] - Electrical Failure
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 47
                    Mileage: 109378 km
                    Date: 2022.11.10
                    Time: 14:17:00

                    12-Volt Vehicle electrical system: malfunction status: Stage 1


-------------------------------------------------------------------------------
Address 22: AWD (J492)       Labels:* Redir Fail!
   Part No SW: 80A 927 755     HW: 0CJ 927 749
   Component: Q5_DL3_N_SD4  H18 0004 
   Serial number: 1715021244
   Coding: 11070000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AWDCQUOD31 001048
   ROD: EV_AWDCQUOD31.rod
   VCID: 6CD785A8872B21ED8F-8038

5 Faults Found:
29727 - Implausible Data Received from ABS Control Module
          U0415 00 [032] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Not Confirmed - Tested Since Memory Clear

29736 - Implausible Data Received from ABS Control Module
          U0415 00 [032] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Not Confirmed - Tested Since Memory Clear

29775 - System Voltage
          P0562 00 [032] - Too Low
          Intermittent - Not Confirmed - Tested Since Memory Clear

32070 - Implausible Data Received from ABS Control Module
          U0415 00 [032] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Not Confirmed - Tested Since Memory Clear

33483 - Function Restricted due to Insufficient Voltage
          U1400 00 [032] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Not Confirmed - Tested Since Memory Clear


-------------------------------------------------------------------------------
Address 29: Left Light
Interface not compatible.
Please upgrade to a current Ross-Tech interface.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136)       Labels:* None
   Part No SW: 4M1 959 760     HW: 4M1 959 760
   Component: MEM-FS        008 0031 
   Serial number: 512A1471721664
   Coding: 005C1B000000B0010000010101010000000000000000000000000000000000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_SCMDriveSideCONTIAU736 006009
   ROD: EV_SCMDriveSideCONTIAU736_AU37.rod
   VCID: 76E3A7C0C967EB3D69-8022

No fault code found.

-------------------------------------------------------------------------------
Address 39: Right Light
Interface not compatible.
Please upgrade to a current Ross-Tech interface.

-------------------------------------------------------------------------------
Address 3C: Lane Change (J769)       Labels:* None
   Part No SW: 4M0 907 566 D    HW: 4M0 907 566
   Component: MRR1Rear      H18 0410 
   Revision: --------   
   Coding: 0E8002
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_RearRadarS1BoschAU736 001022
   ROD: EV_RearRadarS1BoschAU736.rod
   VCID: 366367C089E7AB3DA9-8062

1 Fault Found:
1311234 - Control Module for Lane-Change Assist
          C1114 F3 [008] - Limited Visibility
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 37
                    Mileage: 109021 km
                    Date: 2022.11.06
                    Time: 10:05:38

                    Control Module temperature: 25 °C
                    Voltage terminal 30: 13.00 V
                    Vehicle speed: 122.58 km/h
                    Terminal 15 status: On
                    Voltage terminal 15: Measuring value not available


-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:* None
   Part No SW: 4M1 959 793 B    HW: 4M1 959 793 B
   Component: TSG FS006 0737 
   Serial number: CLSM1QG300XZ4
   Coding: 005D1B015E001480000100B2
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_DCU2DriveSideMAXHKLO 001010
   ROD: EV_DCU2DriveSideMAXHKLO_VW37.rod
   VCID: 3E737FE0A1D7637D71-806A

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:* None
   Part No SW: 4M0 909 144 H    HW: 4M0 909 144 B
   Component: EPS_MLBEVO1BS H20 0005 
   Serial number: 0000817815
   Coding: 90002001000100
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_EPSVWBSAU736 009023
   ROD: EV_EPSVWBSAU736_009.rod
   VCID: 34675DC89F9BB92D97-8060

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.
Cannot be reached

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:* None
   Part No SW: 80A 035 223 A    HW: 80A 035 223
   Component: MIB2_amp_P_Q5 H03 0420 
   Revision: 00000001    Serial number: AUZ8ZAHTK00V3ER
   Coding: 0194010800AFAAAFAA0000010000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AMPMst16C2Gen2ALPI 001012
   ROD: EV_AMPMst16C2Gen2ALPI.rod
   VCID: 19398C7C18396445A4-804C

1 Fault Found:
0571 - Rear Left Treble Speaker
          B1066 13 [009] - Open Circuit
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 43
                    Mileage: 87303 km
                    Date: 2022.03.14
                    Time: 09:12:58

                    Voltage terminal 30: 11.4 V


-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:* None
   Part No SW: 4M1 959 792 B    HW: 4M1 959 792 B
   Component: TSG BFS006 0737 
   Serial number: CLSM1QG700B7Z
   Coding: 005D1B015E001480000100B0
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_DCU2PasseSideMAXHKLO 001010
   ROD: EV_DCU2PasseSideMAXHKLO_VW37.rod
   VCID: 3D7178ECACD1786568-8068

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:* 8W0-035-MIB-HGH2.clb
   Part No SW: 8W5 035 880 A    HW: 8W5 035 880
   Component: MU-P-LNS-US   034 1118 
   Serial number: A798G0HB041048
   Coding: 012406020000000013220002041A00102F0015E501700904FE
   Shop #: WSC 15927 005 1048576
   ASAM Dataset: EV_MUHig6C3Gen2HBAS 001115
   ROD: EV_MUHig6C3Gen2HBAS_AU49.rod
   VCID: 3D7178ECACD1786568-8068

   Data carrier:
   Subsystem 1 - Part No SW: V03 959 803 AF    HW: -----------
   Component: NAR 2020  --- 0076
   Serial number: --------------------

   Multimedia System 1:
   Subsystem 2 - Part No SW: 80A 919 605     HW: 80A 919 605
   Component: AU426_DU_HIGH  H42 0008
   Serial number: AUZ8Z9HBL01L80     

   Multimedia system control head:
   Subsystem 3 - Part No SW: 80A 919 615     HW: 80A 919 615
   Component: ControlUnit_P  H15 0209
   Serial number: 20051700000000000099

   Compact disc data bank:
   Subsystem 4 - Part No SW: V03 959 800 EG    HW: -----------
   Component: Gracenote2  --- 3012
   Serial number: --------------------

1 Fault Found:
0020 - Tuner for Satellite Radio
          B11CF 53 [009] - Deactivated
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 43
                    Mileage: 87303 km
                    Date: 2022.03.14
                    Time: 09:28:02

                    Voltage terminal 30: 12.0 V
                    Satellite radio tuner status-Satellite radio antenna status: electrically OK
                    Satellite radio tuner status-Channel selection for satellite radio: 0
                    Satellite radio tuner status-Audio Signal: Not available
                    Satellite radio tuner status-Antenna current: 0 mA
                    Satellite radio tuner status-Reception quality: Not available
                    Satellite radio tuner status-Satellite radio tuner: pre-activation status: 00
                    Satellite radio tuner status-Satellite radio tuner: pre-activation value: 00


-------------------------------------------------------------------------------
Address 6C: Back-up Cam. (J928)       Labels:* None
   Part No SW: 4M0 907 428 E    HW: 4M0 907 428
   Component: Areaview 2    H13 0315 
   Serial number: C854607JG016587
   Coding: 02240602BA0FA10008404000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_CamSysRVAV2CE2MLBEv 004015
   ROD: EV_CamSysRVAV2CE2MLBEv_004.rod
   VCID: 34675DC89F9BB92D97-8060

No fault code found.

-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (J605)       Labels:| 5Q0-959-107.clb
   Part No SW: 8W8 959 107 B    HW: 8W8 959 107
   Component: HDSG-Modul    H13 0161 
   Revision: --------    Serial number: ÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
   Coding: 0730
   Shop #: WSC 00008 444 00000
   ASAM Dataset: EV_DeckLidCONTIAU736 001014
   ROD: EV_DeckLidCONTIAU736_VW37.rod
   VCID: 489F1938F3132DCDCB-801C

No fault code found.

-------------------------------------------------------------------------------
Address 74: Chassis Control
Cannot be reached

-------------------------------------------------------------------------------
Address 81: Gear Shift (J587)       Labels: 4MX-713-041-81.clb
   Part No SW: 80B 713 041 L    HW: 80B 713 041 L
   Component: GSM-LL        H09 0073 
   Revision: 0L0D5012    Serial number: 20170627000043
   ASAM Dataset: EV_GSMWaehlZFAU736 001016
   ROD: EV_GSMWaehlZFAU736_AU49.rod
   VCID: 2643B7805947DBBD19-8072

No fault code found.

-------------------------------------------------------------------------------
Address 82: Head Up Display (J898)       Labels:* None
   Part No SW: 80A 919 617     HW: 80A 919 617
   Component: HeadUpDisplay H11 1640 
   Coding: 2A01E0
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_HudNSEIKAU736 001017
   ROD: EV_HudNSEIKAU736_AU49.rod
   VCID: 6ADB83B08DDF3FDDFD-803E

No fault code found.

-------------------------------------------------------------------------------
Address A5: Frt Sens. Drv. Assist (R242)       Labels:* Redir Fail!
   Part No SW: 80A 907 217     HW: 80A 907 217
   Component: BVS           H14 0042 
   Coding: 0404020600000202022023A2AD0000FE00F0C020C000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_BVSMLBevKOSTAAU736 002026
   ROD: EV_BVSMLBevKOSTAAU736_AU49.rod
   VCID: 63C5EE946AF56E953E-8036

No fault code found.

-------------------------------------------------------------------------------
Address BB: Door Rear Drv (J388)       Labels:* None
   Part No SW: 4M1 959 795 B    HW: 4M1 959 795 B
   Component: TSG HFS006 0737 
   Serial number: CLSM1QG700GHP
   Coding: 000D1B0000001480400000A0
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_DCU2RearDriveMAXHKLO 001010
   ROD: EV_DCU2RearDriveMAXHKLO.rod
   VCID: 408F0118DB23158D03-8014

No fault code found.

-------------------------------------------------------------------------------
Address BC: Door Rear Pass (J389)       Labels:* None
   Part No SW: 4M1 959 795 B    HW: 4M1 959 795 B
   Component: TSG HBFS006 0737 
   Serial number: CLSM1QG700GFT
   Coding: 000D1B0000001480400000A0
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_DCU2RearPasseMAXHKLO 001010
   ROD: EV_DCU2RearPasseMAXHKLO.rod
   VCID: 408F0118DB23158D03-8014

No fault code found.

-------------------------------------------------------------------------------
Address CA: Sunroof
Cannot be reached

-------------------------------------------------------------------------------
Address CF: Lane Chge Asst 2
Cannot be reached

-------------------------------------------------------------------------------
Address D6: Light Ctrl Left 2
Interface not compatible.
Please upgrade to a current Ross-Tech interface.

-------------------------------------------------------------------------------
Address D7: Light Ctrl Right 2
Interface not compatible.
Please upgrade to a current Ross-Tech interface.

End-------------------------(Elapsed Time: 05:57)--------------------------

 

[Crasher]

That has all the signs of a blocked heater matrix, they are nearly impossible to flush clean

 

[Thatguy]

ok, can you help me understand that a bit better? the valve/solenoid that controls the heater core flow is closed even when the interior temp is commanded to 80f but reads in the 40s. Why would that valve still be closed? is there a direct relation to that valve and the -48C specified temperature i mentioned earlier?
If the valve were opened and still no heat id be looking at a blockage in the heater core itself. im sorry if im totally off. im trying to make sure i understand. Thank you!

 

[stefdds]

In addition and likely the actual reason for the lack of heating is the heater core isolation valve located under the cowl at the fire wall is electronically controlled and read no voltage and was closed.
This isolation valve has the coolant inlet and outlet. One side was hot and the other cold.

Did you have the key "on" when you tested for voltage? How (what method) did you test this?
I'm not sure how this valve is plumed in, but as a test you could possibly clamp in (if soft hoses are used here) a rigid piece of tubing to bypass the valve (ie remove it) and then test for heat . You could potentially have a defective valve (?).


Also, be sure you have safety glasses or goggles on as if the system gets warm , it will be under pressure.

 

[Thatguy]

Hi, I tested this voltage by running the vehicle at full temperature and removing the two wire plug Brown/Blue that is connected to the valve. While running, and engine warm, heat set to 80F on the interior hvac system. Voltage present was .3 volts. I check connection to ground etc.
Checked all piping this valve would absolutely have.to.be open to.allow coolant flow through the heater core. It just isn't being told to open by the system. I pulled the plug and I ran wires directly from the battery to the valve and it opens. And no surprise the heat flows.
I'm struggling with why it's not being commanded open. I'm thinking that the engine may not beleive its warmer enough so it's preventing the heating system from taking heat. Or the command for this function is the actual malfunction.
Sadly there is no specific output test for this device. This device actually has its own little access hatch under the cowl because it seems that it's vital to be accessed.
The HVAC control head may just be malfunctioning. I guess this is an unknown issue. If anyone has an other ideas I'm game to try anything. I can bring it to the stealer but its over an hour away. It's stinks. I'll try to send pictures of what it all looks like as well. Seems.to be simplest thing in the world.

An isolation valve for the heater core isn't opening and I have no heat. Duh right? Just need to know why electrically there is no command to open. No volts. Why?

 

[PetrolDave]

Voltage present was .3 volts. I check connection to ground etc.

Have you checked continuity back to the HVAC module? If there's no volts there it could be the wiring or the module.

 

[Crasher]

The fault code you have is for a faulty air recirculation flap and little to do with temperature control apart from heating outside or cabin air. The matrix is fed by a solenoid valve and evacuated by dual electric pumps so I would use an infrared laser temp pointer to look at the inlet and outlet pipe temps of the matrix to see how they compare with the actual system temp. If they both read the same and there is not heat from the matrix then it is likely it is blocked.

 

[Thatguy]

Ok my wife just took the car out of town until Saturday. I'll get all the measurements and readings for temp.
As I stated earlier, I know the recirc flap issue is nothing. Please read my earlier post.

I'm confused as to why I would be looking at the heating matrix until I understand why the heating control valve isn't being told to open ? That would be step one no? If that was open, and there was still no heat then I'd be looking for a blockage.
What component tells the valve to open? Unfortunately I can't check it tonight.

Thanks all again. Appreciate you.

 

[PetrolDave]

Without an Auto-Scan we're all guessing, and guessing the cause of a fault using just words posted on the internet is a very inexact method.

 

[Crasher]

The valve and pumps are controlled by the HVAC system

 

[stefdds]

Per post #2, were going to need the Auto-Scan, (to be fair we tried it your way......) ; The Auto-Scan will most likely answer all the questions that you are asking - directly or indirectly.

You do have a VCDS right?

 

[Thatguy]

Hi guys,
@stefdds I'm not sure what your foolish rude statement was for? Not for me. That's for certain. There is an auto scan posted above. Can you not read? You do have VCDS right? You did graduate kindergarten right? Reading is fundamental. Start there.
I appreciate the assistance of the other helpful gents. Yes I have VCDS and have had and repaired more Audis and VWs than most people on this site, Including you I'm sure. You should know your place chief, In the back of the line. But I know that I don't know everything, that's for sure. And I'd never be rude to users like that.
Flr the rest, I found the issue, it was the heater control valve. It was stuck in the closed position. It was not the heater core. System working again now. It was clear that collectively we didn't know why the specified value was reading from the radiator was reading -48. It's ok to not know. But the system is working. That was my main question as it makes no sense for that value to be there. But I couldn't get an answer. No one had the info.

Again thank you to the other folks. You have been kind and helpful.
One the one of the other 7 Audis I own has an issue that I'm dealing with. I'll be on another thread. Thanks again.