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Thread: Golf MK7 Electric Auxillary Heater, possible fault

  1. #1
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    Golf MK7 Electric Auxillary Heater, possible fault

    Hi all,

    I have noticed recently that my car (Golf MK7 1.6 TDI Bluemotion UK Spec) during cold weather (<5C) has been taking a few minutes to warm up. I have a 3 stage 1000w electric auxillary heater (not parking heater) factory fitted (PR 7E6) and would expect the car heater to at least be luke warm on high heat setting when the engine is cold, but it isn't for a good 10 minutes or so...

    I did a scan on the car and see that 'Address 08: Auto HVAC' is throwing a recurring fault code. I reset it since it showed as intermittent but then it came back so it's pretty regular when the criteria are met (cold engine, high heat temperature setting etc). I see that it is the engine ECU that is restricting the heater to stage 1, even though the voltage is ample. The heater seems pretty basic as I can't access it at address 7D, and it doesn't show available when scanning all modules.

    Is this normal behaviour or could there be a fault I wonder?

    The scan is attached below. Thanks in advance.

    Code:
    Monday,30,January,2017,09:12:39:00352
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x86
    VCDS Version: 17.1.2.0
    Data version: 20170107 DS267.0
    www.Ross-Tech.com
    
    
    VIN: WVWZZZAUZGP0xxxxx   License Plate:
    Mileage: 26914km-16723mi   Repair Order: 
    
    
    Chassis Type: AU (5Q0)
    Scan: 01 03 08 09 10 13 15 16 17 19 42 44 52 5F
    
    VIN: WVWZZZAUZGP0xxxxx   Mileage: 26914km-16723miles
    
    01-Engine -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    08-Auto HVAC -- Status: Malfunction 0010
    09-Cent. Elect. -- Status: OK 0000
    10-Park/Steer Assist -- Status: OK 0000
    13-Auto Dist. Reg -- Status: Malfunction 0010
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    42-Door Elect, Driver -- Status: OK 0000
    44-Steering Assist -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    5F-Information Electr. -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine (2D2D2-CXXB)       Labels: 04L-907-309-V1.clb
       Part No SW: 04L 906 056 CL    HW: 04L 907 445 B
       Component: R4 1.6l TDI   H06 2370  
       Revision: 22004001    
       Coding: 0111401243451D092000
       Shop #: WSC 00028 028 00031
       ASAM Dataset: EV_ECM16TDI03004L906056CL 002005
       ROD: EV_ECM16TDI03004L906056CL_VW37.rod
       VCID: 79DFDE39F8D83289A4-802C
    
    No fault code found.
    Readiness: N/A
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (J104)       Labels: 5Q0-907-379-IPB-V1.clb
       Part No SW: 3Q0 907 379 AA    HW: 3Q0 907 379 F
       Component: ESC           H42 0623  
       Revision: 00000000    Serial number: 61475000003258
       Coding: 01FA8AA124200974077F060141C82580512490E06082A4F31440F078C002
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_Brake1UDSContiMK100IPB 034036
       ROD: EV_Brake1UDSContiMK100IPB_034_VW37.rod
       VCID: 79DFDE39F8D83289A4-802C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC (J301)       Labels: 5G0-907-426.clb
       Part No SW: 5G0 907 426 T    HW: 5G0 907 426 T
       Component: AC Manuell    H02 1001  
       Revision: 00001K06    
       Coding: 00120104202100001000000000000002
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_ACManueBHBVW37X 003019
       ROD: EV_ACManueBHBVW37X_SK48.rod
       VCID: 3C51072DB76AC7A1FF-8068
    
       Fresh Air Blower Front: 
    
       Refrigerant Pressure And Temperature Sender: 
    
    1 Fault Found:
    1048835 - Functionality limited due to Engine Control Module 
              P1719 00 [008] - -
              Intermittent - Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 6
                        Fault Frequency: 4
                        Reset counter: 40
                        Mileage: 26679 km
                        Date: 2017.01.25
                        Time: 08:47:59
    
                        Voltage terminal 30: 14.2 V
                        Auxiliary heater: in stages-Enabling for auxiliary heater operation: Enabling stage 3
                        Auxiliary heater: in stages-Act.value: 1
                        Auxiliary heater: in stages-Specified value: 3
                        Auxiliary heater: in stages-Specified value for control: 3
    
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels: 5Q0-937-08X-MV1.clb
       Part No SW: 5Q0 937 084 AQ    HW: 5Q0 937 084 AL
       Component: BCM MQBAB M   H24 0173  
       Serial number: 01061514601984
       Coding: 03000842C241027B0BA44080B10403281000000000000000000000000000
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_BCMMQB 015001
       ROD: EV_BCMBOSCH_016_AU37.rod
       VCID: 073BA8C1BE2C5479A2-8052
    
       Control Unit For Wiper Motor: 
       Subsystem 1 - Part No SW: 5G2 955 119 A    HW: 5G2 955 119 A  Labels: 5QX-955-119-V1.CLB
       Component: WWS    150523  042 0551 
       Serial number:         150530150825
       Coding: 0E4DDD
    
       Rain Light Recognition Sensor: 
       Subsystem 2 - Part No SW: 5Q0 955 559 A    HW: 5Q0 955 559 A  Labels: 5Q0-955-547.CLB
       Component: RLS  037 0059 
       Serial number: S3Y15M06D05H12M41S31
       Coding: 90A8DD
    
       Sensor For Anti Theft Alarm System: 
       Subsystem 3 - Part No SW: 5Q0 951 172     HW: 5Q0 951 172 
       Component: Sensor, DWA  006 0326 
       Serial number: 000000000ZY151052X83
    
       Alarm horn: 
       Subsystem 4 - Part No SW: 5Q0 951 605     HW: 5Q0 951 605 
       Component: Sirene, DWA  004 0311 
       Serial number: 00000000000032426308
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 10: Park/Steer Assist (J446)       Labels: 5Q0-919-294.clb
       Part No SW: 5Q0 919 294 K    HW: 5Q0 919 294 A
       Component: PARKHILFE 8K  H03 0054  
       Revision: --------    Serial number: 39391514003633
       Coding: 0071051001
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_EPHVA18AU3700000 002026
       ROD: EV_EPHVA18AU3700000_VW37.rod
       VCID: 43A37CD1CA94B859BE-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 13: Auto Dist. Reg (J428)       Labels: 5Q0-907-572.clb
       Part No SW: 5Q0 907 572 D    HW: 5Q0 907 572 D
       Component: ACC Bosch MQB H05 0304  
       Serial number: 11051503271215
       Coding: 00000300FE0739
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_ACCMRRBoschVW372 001015
       ROD: EV_ACCMRRBoschVW372_VW26.rod
       VCID: 38591B3D8352EB811B-806C
    
    1 Fault Found:
    1542 - Sensor for Automatic Distance Control 
              C110B F0 [008] - Limited Visibility
              Intermittent - Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 6
                        Fault Frequency: 1
                        Reset counter: 19
                        Mileage: 25954 km
                        Date: 2017.01.12
                        Time: 22:50:06
    
                        Control Module temperature: 21 °C
                        Voltage terminal 15: 14.2 V
                        Vehicle speed: 21.44 m/s
                        Acceleration: -0.25 m/s²
    
    
    -------------------------------------------------------------------------------
    Address 15: Airbags (J234)       Labels: 5Q0-959-655.clb
       Part No SW: 5Q0 959 655 AA    HW: 5Q0 959 655 AA
       Component: AirbagVW20    014 0386  
       Serial number: 003MLR0F7GXF
       Coding: 98CCC000000000005C0000CF00C800000065
       Shop #: WSC 00028 028 00005
       ASAM Dataset: EV_AirbaVW20SMEVW37X 002130
       ROD: EV_AirbaVW20SMEVW37X_VW37.rod
       VCID: 7F2B3021E6FC1CB99A-802A
    
       Belt Pretensioner left: 
       Subsystem 1 - Part No SW: 5G0 980 945 B    HW: 5G0 980 945 B
       Component: BeltPretRevFL  H36 0350 
       Serial number: 34169677B03061571371
       Coding: 333135
    
       Belt Pretensioner right: 
       Subsystem 2 - Part No SW: 5G0 980 946 B    HW: 5G0 980 946 B
       Component: BeltPretRevFR  H36 0350 
       Serial number: 34169676B04061570699
       Coding: 333135
    
       Side Sensor Driver Front: 
       Subsystem 3 - Part No SW: -----------    HW: 480 002 805 15
       Component: SideSensor_Df  001 0887 
       Serial number: 3576700000060269749S
       Coding: 2D2D2D
    
       Side Sensor Passenger Front: 
       Subsystem 4 - Part No SW: -----------    HW: 480 002 905 15
       Component: SideSensor_Pf  001 0887 
       Serial number: 358670000009F8615490
       Coding: 2D2D2D
    
       Side Sensor Driver Rear: 
       Subsystem 5 - Part No SW: -----------    HW: 480 400 106 15
       Component: SideSensor_Dr  001 6149 
       Serial number: 3516502C31A91E02C2EG
       Coding: 2D2D2D
    
       Side Sensor Passenger Rear: 
       Subsystem 6 - Part No SW: -----------    HW: 480 400 106 15
       Component: SideSensor_Pr  001 6149 
       Serial number: 3526502C51A91E00E317
       Coding: 2D2D2D
    
       Front Sensor Driver: 
       Subsystem 7 - Part No SW: -----------    HW: 480 402 605 15
       Component: FrontSensor_D  001 6149 
       Serial number: 3556502B91A91E0450AE
       Coding: 2D2D2D
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel (J527)       Labels: 5Q0-953-549.clb
       Part No SW: 5Q0 953 507 GK    HW: 5Q0 953 549 E
       Component: Lenks. Modul  003 0110  
       Revision: --------    Serial number: 27051504400877
       Coding: 0C00
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_SMLSKLOMQB 017001
       ROD: EV_SMLSKLOMQB_VW37.rod
       VCID: 0527A2C984204669D0-8050
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels: 5G0-920-XXX-17.clb
       Part No SW: 5G1 920 941 A    HW: 5G1 920 941 A
       Component: KOMBI         202 6420  
       Coding: 27A41A002780260001882A011400000000000000
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_DashBoardVDDMQBAB 009046
       ROD: EV_DashBoardVDDMQBAB_009_VW26.rod
       VCID: 277BC8415EEC747982-8072
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels: 5Q0-907-530-V1.clb
       Part No SW: 5Q0 907 530 AF    HW: 5Q0 907 530 M
       Component: GW MQB High   212 2227  
       Revision: --------    Serial number: 30051510802866
       Coding: 030100041F087300FB00005C080F00010001050000000000000000000000
       Shop #: WSC 131071 1023 2097151
       ASAM Dataset: EV_GatewConti 013020
       ROD: EV_GatewConti_013.rod
       VCID: 75C7D209D4C056E9C0-8020
    
       Alternator: 
    
       Multi Function Steering Wheel Control Module: 
       Subsystem 2 - Part No SW: 5G0 959 442 K    HW: 5G0 959 442 K  Labels: 3C8-959-537.CLB
       Component: E221__MFL-DC1  H16 0040 
       Serial number: 38150000024120125222
       Coding: 2CFFFF
    
       Battery Monitoring Control Module: 
       Subsystem 3 - Part No SW: 5Q0 915 181 G    HW: 5Q0 915 181 G
       Component: J367-BDMHella  H04 8050 
       Serial number: 2167096803          
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver (J386)       Labels: 5QX-959-X93-42.clb
       Part No SW: 5Q4 959 593 E    HW: 5Q4 959 593 B
       Component: TSG FS        010 0031  
       Serial number: 0000151977954 
       Coding: 00310220D001028000001000
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_DCUDriveSideEWMAXCONT 006001
       ROD: EV_DCUDriveSideEWMAXCONT.rod
       VCID: 47BB68C1FEAC947962-8012
    
       Drivers Door Rear Control Module: 
       Subsystem 1 - Part No SW: 5Q4 959 812 A    HW: 5Q4 959 812 A
       Component: Fond FHSG DRV  007 0002 
       Serial number: 00000000000009230245
       Coding: 0D0000
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist (J500)       Labels: 5Q0-909-144.clb
       Part No SW: 5Q0 909 144 R    HW: 5Q0 909 144 R
       Component: EPS_MQB_ZFLS  125 1061  
       Coding: 8103
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_SteerAssisMQB 012140
       ROD: EV_SteerAssisMQB_VW31.rod
       VCID: 43A37CD1CA94B859BE-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. (J387)       Labels: 5QX-959-X92-52.clb
       Part No SW: 5Q4 959 592 E    HW: 5Q4 959 592 B
       Component: TSG BFS       010 0031  
       Serial number: 0000151987297 
       Coding: 00310020DE01028000801000
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_DCUPasseSideEWMAXCONT 006001
       ROD: EV_DCUPasseSideEWMAXCONT.rod
       VCID: 46A565C5F9A68D7199-8012
    
       Passengers Rear Door Control Module: 
       Subsystem 1 - Part No SW: 5Q4 959 811 A    HW: 5Q4 959 811 A
       Component: Fond FHSG PSG  007 0002 
       Serial number: 00000000000009166172
       Coding: 050000
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 5F: Information Electr. (J794)       Labels: 5G0-035-MIB-STD2.clb
       Part No SW: 3Q0 035 820 A    HW: 3Q0 035 820 A
       Component: MU-S-D-ER     H24 0245  
       Serial number: VWZAZ2R0178391
       Coding: 02730000FF00000051111101008808001F0100C60120010001
       Shop #: WSC 00028 028 00024
       ASAM Dataset: EV_MUStd4CTSAT 001022
       ROD: EV_MUStd4CTSAT_VW26.rod
       VCID: 277BC8415EEC747982-8072
    
       Operating And Display Unit 1: 
       Subsystem 1 - Part No SW: 3G0 919 605     HW: 3G0 919 605 
       Component: ABT_Std-2  H43 4064 
       Serial number: VWZ6Z9R1590510      
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 03:35)--------------------------

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  3. #2
    Ross-Tech Employee DrPeter's Avatar
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    Hello,

    Is this normal behaviour or could there be a fault I wonder?
    - I would imagine this is not normal, unless it is extremely cold, like 'Vostok Station, Antarctica' cold and the system can not keep up with the request for heat?

    - Question: Is this vehicle still under warranty? 16723 miles? Also, maybe there is an TSB or update for this concern, I would contact them to see if there is any known issues/fixes.

    Hope this helps,

    drpeter

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  5. #3
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    Quote Originally Posted by DrPeter View Post
    Hello,



    - I would imagine this is not normal, unless it is extremely cold, like 'Vostok Station, Antarctica' cold and the system can not keep up with the request for heat?

    - Question: Is this vehicle still under warranty? 16723 miles? Also, maybe there is an TSB or update for this concern, I would contact them to see if there is any known issues/fixes.

    Hope this helps,

    drpeter
    Hi,

    Thanks for your reply. I am not in Vostok, although it feels like it sometimes 😀

    The trouble with this particular fault is that it seems to only trigger when the outside temperature is close to 0C along with high heat set etc...

    I will ask the dealer to investigate as it is under warranty...

    In the meantime, if anyone has experienced this and has had it rectified then please do let me know. Thanks.

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  7. #4
    VCDS Distributor AIB Wolfgang's Avatar
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    Hello,

    I would investigate the engine control,
    Functionality limited due to Engine Control Module P1719 00.

    Think there is something wrong with the torque detecting, send to control module "08"
    -Wolfgang

    Drive more talk less

  8. #5
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    Or what about, if airbus is driving "quick" and although [08] demands heat stage 3, [01] says "dream about it", driver wants engine power, you only get stage 1 (no heating power).

  9. #6
    VCDS Distributor AIB Wolfgang's Avatar
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    Okay,
    but there will be no fault stored in "08" if that is a driving feature
    -Wolfgang

    Drive more talk less

  10. #7
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    I see it as information:
    "Functionality limited"
    "Intermittent"

  11. #8
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    Hi Wolfgang and NEtech,

    Thanks for supplying your thoughts. I particularly like NEtechs thought on how the ECU is speaking to the climate module, good for the none tech savvy like me

    There is no fault occuring with the ECU, or at least no fault code triggered. The fact it is 'intermittent' I think is merely because the Outside Air Temperature is fluctuating here in the UK across the past month or so. 2 weeks ago we had -3C, now we have 11C and the fault does not show up as conditions are not met to provide the electric heater.

    Like Wolfgang says, if my driving style denotes that the ECU says 'NO' to stage 3, blocking the climate module from supplying it by design, then I wouldn't expect there to be stored fault. But from the time stamp I'd expect that the code has been triggered from merely starting the car in the cold (maybe 3C) and demanding high heat on the control panel.

    It would be interesting to see anyone else that has had the fault and somehow had it fixed. I can see the dealer scratching their head if I turn up and there is no TSB against it, and the outside air temperature is >3C

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  13. #9
    Ross-Tech Employee Dana's Avatar
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    Hi Adam,

    I received your PM but I don't have any additional suggestions to offer. The only flash update TPI I located for 04L 906 056 CL was 2041348/1 Engine/glow plug system warning lamp on, event entry P0136 but it was dated: 14-Sep-2015 and potentially unrelated to this concern.

    That would flash you from SWL 2370 -to- 2506 or higher. I would usually recommend having any known bugs/software related updates performed .. .. but due to the recent emissions drama I don't know if you want the latest software in that EDC?

    Component: R4 1.6l TDI H06 2370

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  15. #10
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    Quote Originally Posted by Dana View Post
    Hi Adam,

    I received your PM but I don't have any additional suggestions to offer. The only flash update TPI I located for 04L 906 056 CL was 2041348/1 Engine/glow plug system warning lamp on, event entry P0136 but it was dated: 14-Sep-2015 and potentially unrelated to this concern.

    That would flash you from SWL 2370 -to- 2506 or higher. I would usually recommend having any known bugs/software related updates performed .. .. but due to the recent emissions drama I don't know if you want the latest software in that EDC?
    Hi Dana,

    Thanks very much for the response. I took it to the dealer and see that they checked the heater, checked the wiring, then changed the ECU after advice given by VW, but still the problem remained. They also checked for software updates and said that none were available. If I do get a positive outcome I will update his thread. Thanks.

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