ACC/distance control weirdness

   #1  

cruster

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C?ID=281059
Howdy - I'm having weirdness with ACC the past few weeks, and it's stumping me.
Car is a US 2016 Golf SportWagen with driver assist package, which included full ACC and front assist for 2016.
About a week ago I started getting infrequent ACC errors - ACC and/or Front Assist Not Available in the MFD. I am able to clear the codes, but the error pops up again...randomly. I can't seem to tie it to any place or action. I've had it happen two days in a row, and I've gone 6 days without it.
Turning the car off and back on always restores functionality.
The error indicates that automatic distance control is disconnected.
One note, and I don't know if it's a factor, but...I did notice about a month ago that I have a chip in the windshield that seems to have spidered-out...and it's right in front of the camera. I need to get that taken care of. I assume it's a problem with ACC, but not necessarily a root cause here.
I've also noticed some weird behavior with ACC - which I think may be related to the windshield chip - which is that some cars seem to no longer be detected by the camera. Seems to particularly happen if I have ACC and come upon a vehicle, which was previously out of range, at a stop. THe car...won't stop. Watching in the MFD, there's no car image, as if the car is not detected.
Any help would be appreciated. No accidents, no impacts (that I know of)...nothing I can think of that would be causing this issue.
Thanks in advance.

Code:
Wednesday,22,January,2020,20:27:18:37754
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 19.6.2.0 (x64)
Data version: 20190930 DS308.0
www.Ross-Tech.com
VIN: 3VWC17AU6GM516369   License Plate: 
Chassis Type: AU-VW37 (5Q0)
Scan: 01 02 03 05 08 09 10 13 15 16 17 19 2B 3C 42 44 47 52 55 5F
          75 A5
VIN: 3VWC17AU6GM516369   Mileage: 101719km-63205miles
01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
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
2B-Steer. Col. Lock -- Status: OK 0000
3C-Lane Change -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
75-Telematics -- Status: OK 0000
A5-Frt Sens. Drv. Assist -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CXBB)       Labels:. 06K-907-425-V1.clb
   Part No SW: 8V0 906 264 F    HW: 06K 907 425 B
   Component: 1.8l R4 TFSI  H13 0003  
   Revision: --H13---    
   Coding: 091A00322464002F1000
   Shop #: WSC 00066 790 00060
   ASAM Dataset: EV_ECM18TFS0208V0906264F 001003
   ROD: EV_ECM18TFS0208V0906264F.rod
   VCID: 3FA3BC81A6EEC6B79E-806A
No fault code found.
Readiness: 1010 1101
-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels: 09G-927-749-V2.clb
   Part No SW: 09G 927 749 AP    HW: 09G 927 749 AP
   Component: AISIN AG6 G3  129 2943  
   Coding: 010100000C000000000000000000000000000000
   Shop #: WSC 00066 790 00060
   ASAM Dataset: EV_TCMAQ250031 002009
   ROD: EV_TCMAQ250031_002_VW37.rod
   VCID: 07336461BEBE4E77E6-8052
No fault code found.
-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 5Q0-907-379-IPB-V1.clb
   Part No SW: 3Q0 907 379 AB    HW: 3Q0 907 379 G
   Component: ESC           H42 0723  
   Revision: 00000000    Serial number: 62285000000052
   Coding: 04FA6AA124210972007A020681CC292056249000408194B416405052C082
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_Brake1UDSContiMK100IPB 034036
   ROD: EV_Brake1UDSContiMK100IPB_034_VW37.rod
   VCID: 7AD50D95FD4C239FE9-802E
No fault code found.
-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J518)       Labels:| 5Q0-959-435.clb
   Part No SW: 5Q0 959 435 A    HW: 5Q0 959 435 
   Component: VWKESSYMQB    021 0604  
   Revision: 00021000    Serial number: 0380115767
   Coding: 030C0C
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_KessyHellaMQBAB 002011
   ROD: EV_KessyHellaMQBAB_002.rod
   VCID: 3A55CD95BDCCE39FA9-806E
No fault code found.
-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 5G0-907-426.clb
   Part No SW: 5GM 907 426 A    HW: 5GM 907 426 A
   Component: AC Manuell    H02 1001  
   Revision: 00001K01    
   Coding: 02020004200100000100000000000002
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_ACManueBHBVW37X 003019
   ROD: EV_ACManueBHBVW37X_003.rod
   VCID: 46ADA965F934977FDD-8012
   Fresh Air Blower Front: 
   Geber für Kältemitteldruck/Kältemitteltemperatur: 
No fault code found.
-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:| 5Q0-937-08X-MV1.clb
   Part No SW: 5Q0 937 087 AA    HW: 5Q0 937 087 AA
   Component: BCM PQ37BOSCH 028 0162  
   Revision: --------    Serial number: 86582410150230
   Coding: 00511B464041A26969E44000011407001800000000000000000000000000
   Shop #: WSC 00066 790 00206
   ASAM Dataset: EV_BodyContrModul1UDSBosc 015002
   ROD: EV_BCMBOSCH_015.rod
   VCID: 7AD50D95FD4C239FE9-802E
   Control Unit For Wiper Motor: 
   Subsystem 1 - Part No SW: 5GM 955 119     HW: 5GM 955 119   Labels: 5QX-955-119-V1.CLB
   Component: WWS    150724  043 0581 
   Serial number:         151204071827
   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: S4Y15M10D23H23M00S58
   Coding: 96A8DD
   Sun Roof: 
   Subsystem 3 - Part No SW: 5G0 959 591 A    HW: 8V3 959 591 A
   Component: J245 PS22.409  H03 0004 
   Serial number: 0000FST000GBTN700000
   Coding: 191800
   Roof Blind: 
   Subsystem 4 - Part No SW: 5G0 959 591 A    HW: 8V3 959 591 A
   Component: J394 PS22.409  H03 0004 
   Serial number: 0000FST000GBTM600000
   Coding: 191800
No fault code found.
-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J791)       Labels:| 5Q0-919-298.clb
   Part No SW: 5Q0 919 298 K    HW: 5Q0 919 298 
   Component: PARKHILFE PLA H12 0054  
   Revision: --------    Serial number: 39491529501121
   Coding: 0031165011
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_EPHVA2CAU3700000 003021
   ROD: EV_EPHVA2CAU3700000_003.rod
   VCID: 47B3A461FE3E8E7726-8012
No fault code found.
-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 5Q0-907-572-V1.clb
   Part No SW: 5Q0 907 572 F    HW: 5Q0 907 572 F
   Component: ACC Bosch MQB H05 0400  
   Serial number: 04071503212235
   Coding: 010C5400FE0739
   Shop #: WSC 00066 790 00206
   ASAM Dataset: EV_ACCMRRBoschVW372 001016
   ROD: EV_ACCMRRBoschVW372_VW26.rod
   VCID: 3A55CD95BDCCE39FA9-806E
1 Fault Found:

1043 - Automatic Distance Control 
          B10E7 F0 [008] - Disconnected
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 196
                    Mileage: 101693 km
                    Date: 2020.01.22
                    Time: 16:52:46
                    Control Module temperature: 24 °C
                    Voltage terminal 15: 14.3 V
                    Vehicle speed: 17.29 m/s
                    Acceleration: -0.14 m/s²
-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5Q0-959-655.clb
   Part No SW: 5Q0 959 655 J    HW: 5Q0 959 655 J
   Component: AirbagVW20    010 0830  
   Serial number: 003GCR03FYJ0
   Coding: 8CCCFC00000000005000001AC24800000065
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_AirbaVW20SMEVW37X 002144
   ROD: EV_AirbaVW20SMEVW37X.rod
   VCID: 47B3A461FE3E8E7726-8012
   Occupant Detection: 
   Subsystem 1 - Part No SW: 4M0 959 339 B    HW: 4M0 959 339 B
   Component: BF-Gewichtss.  H11 0021 
   Serial number: IBH000000000003WUL25
   Coding: 303135
   Side Sensor Driver Front: 
   Subsystem 2 - Part No SW: -----------    HW: 480 002 509 15
   Component: SideSensor_Df  001 0887 
   Serial number: 35700000000D772C361N
   Coding: 2D2D2D
   Side Sensor Passenger Front: 
   Subsystem 3 - Part No SW: -----------    HW: 480 002 409 15
   Component: SideSensor_Pf  001 0887 
   Serial number: 35800000000C5A9CE61%
   Coding: 2D2D2D
   Side Sensor Driver Rear: 
   Subsystem 4 - Part No SW: -----------    HW: 480 402 109 15
   Component: SideSensor_Dr  001 6149 
   Serial number: 3510002AB1D1B5D300E7
   Coding: 2D2D2D
   Side Sensor Passenger Rear: 
   Subsystem 5 - Part No SW: -----------    HW: 480 402 109 15
   Component: SideSensor_Pr  001 6149 
   Serial number: 3520002B71CF2DA5626G
   Coding: 2D2D2D
   Front Sensor Driver: 
   Subsystem 6 - Part No SW: -----------    HW: 480 401 609 15
   Component: FrontSensor_D  001 6149 
   Serial number: 3550002C51CF2D83C1ER
   Coding: 2D2D2D
   Front Sensor Passenger: 
   Subsystem 7 - Part No SW: -----------    HW: 480 401 609 15
   Component: FrontSensor_P  001 6149 
   Serial number: 3560002C51CF2D83B2DR
   Coding: 2D2D2D
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5Q0-953-549.clb
   Part No SW: 5Q0 953 521 BB    HW: 5Q0 953 569 A
   Component: Lenks.Modul   075 0195  
   Revision: FF033033    Serial number: 20150912500930
   Coding: 0C10
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_SMLSVALEOMQB 001015
   ROD: EV_SMLSVALEOMQB.rod
   VCID: 73CB20B1DA2652D7AA-8026
No fault code found.
-------------------------------------------------------------------------------
   Part No SW: 5G1 920 840 A    HW: 5G1 920 840 A
   Component: KOMBI         242 6420  
   Coding: 0BA5111AED98CF0502887E0B5000000000000000
   Shop #: WSC 00066 790 00060
   ASAM Dataset: EV_DashBoardVDDMQBAB 009046
   ROD: EV_DashBoardVDDMQBAB_009_VW37.rod
   VCID: 256F0EE924727C67F4-8070
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:| 5Q0-907-530-V1.clb
   Part No SW: 5Q0 907 530 AJ    HW: 5Q0 907 530 M
   Component: GW MQB High   212 2246  
   Revision: --------    Serial number: 11101510520536
   Coding: 0901000830085900FB00001A1C0F00000001050000000000000000000000
   Shop #: WSC 00066 790 07026
   ASAM Dataset: EV_GatewConti 013020
   ROD: EV_GatewConti_013.rod
   VCID: 79D71299F84A2887E0-802C
   Alternator: 
   Multi Function Steering Wheel Control Module: 
   Subsystem 2 - Part No SW: 5G0 959 442 R    HW: 5G0 959 442 R  Labels: 3C8-959-537.CLB
   Component: E221__MFL-DC1  H16 0040 
   Serial number: 29150001481320065294
   Coding: 35FFFF
   Power Converter DC AC: 
   Subsystem 3 - Part No SW: 5Q0 907 155 A    HW: 5Q0 907 155 A
   Component: WECHSELRICHTE  H53 0041 
   Serial number: 0083351             
No fault code found.
-------------------------------------------------------------------------------
Address 2B: Steer. Col. Lock (J764)       Labels:* 5Q0-905-861.clb
   Part No SW: 5Q0 905 861 A    HW: 5Q0 905 861 A
   Component: ELV-MQBA      H01 0120  
   Revision: 00000000    Serial number: 15000212593001
   Coding: 5D00000000000000
   Shop #: WSC 00066 790 07026
   ASAM Dataset: EV_ELVMarquMQB 004111
   ROD: EV_ELVMarquMQB.rod
   VCID: 3449E3AD9FA815EF73-8060
No fault code found.
-------------------------------------------------------------------------------
Address 3C: Lane Change (J1086)       Labels:| 5Q0-907-686.clb
   Part No SW: 5Q0 907 686 B    HW: 5Q0 907 686 B
   Component: HRE_Master    H11 0071  
   Serial number: 0379666889
   Coding: 02011103
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_HREntryHella 001028
   ROD: EV_HREntryHella_VW37.rod
   VCID: 3C59CB8DB7F8DDAFBB-8068
   Lane Change Assistant 2: 
   Subsystem 1 - Part No SW: 5Q0 907 685 B    HW: 5Q0 907 685 B
   Component: HRE_Slave  H11 0071 
   Serial number: 0379002070          
   Coding: 020111
No fault code found.
-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 5QX-959-X93-42.clb
   Part No SW: 5Q0 959 593 E    HW: 5Q0 959 593 B
   Component: TSG FS        020 0041  
   Serial number: 20111506050AUC
   Coding: 003A13200000020000000000
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_DCUDriveSideEWMAXKLO 006003
   ROD: EV_DCUDriveSideEWMAXCONT.rod
   VCID: 43ABB071CA06A257FA-8016
   Drivers Door Rear Control Module: 
   Subsystem 1 - Part No SW: 5Q4 959 811 D    HW: 5Q4 959 811 D  Labels: 5QX-959-81X-V1.CLB
   Component: Fond FHSG DRV  007 0002 
   Serial number: 00000000000002310599
   Coding: 011000
No fault code found.
-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 5Q0-909-144.clb
   Part No SW: 5Q0 909 144 S    HW: 5Q0 909 144 R
   Component: EPS_MQB_ZFLS  126 1063  
   Coding: 1302
   Shop #: WSC 00066 790 00060
   ASAM Dataset: EV_SteerAssisMQB 012140
   ROD: EV_SteerAssisMQB_012_VW37.rod
   VCID: 44A9B36DCF08A56FC3-8010
No fault code found.
-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:| 5Q0-035-456.clb
   Part No SW: 5Q0 035 456     HW: 5Q0 035 456 
   Component: MIB2_lite_amp H20 0130  
   Revision: 00000001    Serial number: VWZ8Z1FBA00YD2C
   Coding: 2200000000AAAAAA000000000000
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_AMPMst12C1Gen2ALPI 001003
   ROD: EV_AMPMst12C1Gen2ALPI.rod
   VCID: 6DFF36C9BC0284277C-8038
1 Fault Found:
0570 - Loudspeaker 2 in Double-Subwoofer 
          B130D 13 [008] - Open Circuit
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 196
                    Mileage: 92961 km
                    Date: 2019.09.24
                    Time: 20:22:52
                    Voltage terminal 30: 12.1 V
-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 5QX-959-X92-52.clb
   Part No SW: 5Q0 959 592 E    HW: 5Q0 959 592 B
   Component: TSG BFS       020 0041  
   Serial number: 171115060502F4
   Coding: 003A13200000020000000000
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_DCUPasseSideEWMAXKLO 006003
   ROD: EV_DCUPasseSideEWMAXCONT.rod
   VCID: 42A5B575D51CAB5FF1-8016
   Passengers Rear Door Control Module: 
   Subsystem 1 - Part No SW: 5Q4 959 812 D    HW: 5Q4 959 812 D  Labels: 5QX-959-81X-V1.CLB
   Component: Fond FHSG PSG  007 0002 
   Serial number: 00000000000001962165
   Coding: 091000
No fault code found.
-------------------------------------------------------------------------------
Address 55: Headlight Range (J745)       Labels:| 7P6-907-357.clb
   Part No SW: 7P6 907 357 D    HW: 7P6 907 357 A
   Component: AFS-ECU       H07 0090  
   Revision: --------    Serial number: --------------
   Coding: 061A00000B000400
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_HeadlRegulVWAFSMQB 001120
   ROD: EV_HeadlRegulVWAFSMQB.rod
   VCID: 40A1BF7DDB10B94FE7-8014
   Left Headlamp Power Output Stage: 
   Subsystem 1 - Part No SW: 5N0 941 329     HW: 5N0 941 329   Labels: 3D0-941-329.CLB
   Component: LeiMo links  H01 0004 
   Coding: 2E0000
   Right Headlamp Power Output Stage: 
   Subsystem 2 - Part No SW: 5N0 941 329     HW: 5N0 941 329   Labels: 3D0-941-329.CLB
   Component: LeiMo rechts  H01 0004 
   Coding: 2E0000
No fault code found.
-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-STD2.clb
   Part No SW: 3Q0 035 844     HW: 3Q0 035 844 
   Component: MU-S-S-US     620 0613  
   Serial number:               
   Coding: 027302000000000051220002001808001F0100F40120010002
   Shop #: WSC 00066 790 07026
   ASAM Dataset: EV_MUStd4CDELP 001001
   ROD: EV_MUStd4CDELP_VW37.rod
   VCID: 6CF93BCD87188D2F6B-8038
   Operating And Display Unit 1: 
   Subsystem 1 - Part No SW: 3G0 919 605 H    HW: 3G0 919 605 H
   Component: ABT_Std-2  H52 1028 
   Serial number: VWZ8Z9RES00Y5C      
No fault code found.
-------------------------------------------------------------------------------
Address 75: Telematics (J949)       Labels:| 5QE-035-285.clb
   Part No SW: 5QE 035 285 A    HW: 5QE 035 285 A
   Component: OCULowMQBUS   007 0568  
   Coding: 02730202C2823A017F1E06000000
   Shop #: WSC 131071 1023 2097151
   ASAM Dataset: EV_OCULowMQB 001006
   ROD: EV_OCULowMQB.rod
   VCID: 43ABB071CA06A257FA-8016
No fault code found.
-------------------------------------------------------------------------------
Address A5: Frt Sens. Drv. Assist (R242)       Labels:| 5Q0-980-653.clb
   Part No SW: 5Q0 980 653 G    HW: 5Q0 980 653 
   Component: MQB_MFK       H06 0060  
   Serial number: 10000420370   
   Coding: 0100010000020300000400010100000100
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_MFKBoschAU370 001001
   ROD: EV_MFKBoschAU370.rod
   VCID: 3C59CB8DB7F8DDAFBB-8068
No fault code found.
End-------------------------(Elapsed Time: 04:12)--------------------------
=======================================================
Controller Software Versions:
ECU 1 = Engine 0003
ECU 2 = Auto Trans 2943
ECU 3 = ABS Brakes 0723
ECU 4 = Acc/Start Auth. 0604
ECU 5 = Auto HVAC 1001
ECU 6 = Cent. Elect. 0162
Sub ECU 6 > 1 = Cent. Elect. 0581
Sub ECU 6 > 2 = Cent. Elect. 0059
Sub ECU 6 > 3 = Cent. Elect. 0004
Sub ECU 6 > 4 = Cent. Elect. 0004
ECU 7 = Park/Steer Assist 0054
ECU 8 = Auto Dist. Reg 0400
ECU 9 = Airbags 0830
Sub ECU 9 > 1 = Airbags 0021
Sub ECU 9 > 2 = Airbags 0887
Sub ECU 9 > 3 = Airbags 0887
Sub ECU 9 > 4 = Airbags 6149
Sub ECU 9 > 5 = Airbags 6149
Sub ECU 9 > 6 = Airbags 6149
Sub ECU 9 > 7 = Airbags 6149
ECU 10 = Steering wheel 0195
ECU 11 = Instruments 6420
ECU 12 = CAN Gateway 2246
Sub ECU 12 > 1 = CAN Gateway 0040
Sub ECU 12 > 2 = CAN Gateway 0041
ECU 13 = Steer. Col. Lock 0120
ECU 14 = Lane Change 0071
Sub ECU 14 > 1 = Lane Change 0071
ECU 15 = Door Elect, Driver 0041
Sub ECU 15 > 1 = Door Elect, Driver 0002
ECU 16 = Steering Assist 1063
ECU 17 = Sound System 0130
ECU 18 = Door Elect, Pass. 0041
Sub ECU 18 > 1 = Door Elect, Pass. 0002
ECU 19 = Headlight Range 0090
Sub ECU 19 > 1 = Headlight Range 0004
Sub ECU 19 > 2 = Headlight Range 0004
ECU 20 = Information Electr. 0613
Sub ECU 20 > 1 = Information Electr. 1028
ECU 21 = Telematics 0568
ECU 22 = Frt Sens. Drv. Assist 0060
 
   #2  

downtime

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The radar is still the main detector for cars, the camera is just helping in it. So if there's no car image in front the radar has not detected it.

And the radar does not pick up cars that have stopped. The car in front needs to move so that the radar detects it. This is how the system has been designed to work.
 
   #3  

cruster

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Thanks - that would totally jibe with what's happening, it just seems like...it wasn't working that way before, but maybe it was. The system does seem to detect obstacles/stopped vehicles "some of the time", but maybe that's only when they come to a stop after they've been detected, and not when I come upon a stopped car coming around the corner. I've had the car going on 4 years...but I also know with the recent front assist errors I'm paying more attention.

Thanks for chiming in.
 
   #4  

downtime

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Can you get your car autoscanned with a newer HEX CAN v2 cable? It would show the extended info for the error. Might give some hints why the radar is disconnected. That disconnect message is a generic error and there are many reasons that cause it.

Is the radar behind VW bagde or on the lower part of the bumper? If it's behind VW badge check that the badge is clean. It is very sensitive to any dirt and seems to disconnect the radar even in heavy rain.
 
   #5  

Uwe

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Can you get your car autoscanned with a newer HEX CAN v2 cable? It would show the extended info for the error. Might give some hints why the radar is disconnected. That disconnect message is a generic error and there are many reasons that cause it.
The additional info for that fault looks quite cryptic: FAULT_CIS_TSK_IRREV_FAIL

-Uwe-
 
   #6  

downtime

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^ That error I’ve seen when the ACC view is obstructed. Means there’s dirt or something blocking ACC view.
 
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