ACC fault - electromagnetic interference

[minorityracer]

Hey guys,
today the ACC in my VW CC stopped working.
It gives ACC Error! on the dash, together with an exclamation mark.

I checked with VCDS and it gives the following:

Address 13: Auto Dist. Reg
1 Fault Found:

00272 - Function Disabled due to Electromagnetic Interference
012 - Electrical Fault in Circuit - MIL ON
Freeze Frame:
Fault Status: 11101100
Fault Priority: 7
Fault Frequency: 3
Reset counter: 47
Mileage: 88465 km
Time Indication: 0
Date: 2054.14.02
Time: 18:20:26

Freeze Frame:
Count: 16

Any idea what's going on?
How do I fix it?

Thanks.

[kamold]

As a general rule, an isolated snippet of an autoscan is not very useful.
Please post the full autoscan for context.
Possibly something electrical such as low battery voltage or another consumer causing issues for the radar.

[minorityracer]

My apologies. I only saved that bit. I will do a full scan this afternoon and post the result.

The issue disappears after ignition restart and recurs after ~1-10km.

[minorityracer]

Wednesday,27,May,2020,18:26:45:00007
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.9.0.2
Data version: 20180927 DS296.0
www.Ross-Tech.com


VIN: License Plate: 
Mileage: 88720km-55128mi   Repair Order: 



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


Chassis Type: 3C-VW46 (3C0)
Scan: 01 02 03 08 09 10 13 14 15 16 17 19 22 25 36 42 44 46 4F 52
          53 55 56 62 65 72

VIN: Mileage: 88720km-55128miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- 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
14-Susp. Elect. -- 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
22-AWD -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
36-Seat Mem. Drvr -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
4F-Centr. Electr. II -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (BWS)       Labels: 03H-906-032-BLV.clb
   Part No SW: 03H 906 032 DQ    HW: 03H 906 032 AB
   Component: CC3.6-FSI-EU4   F   3490  
   Revision: 5GH04---    Serial number: VWZCZ000000000
   Coding: 0000175
   Shop #: WSC 22690 959 89399
   VCID: 74E76AD117BB28EAC1-8020

1 Fault Found:
005717 - Please check DTC Memory of Auto. Distance Controller 
               P1655 - 004 -  - Intermittent
             Freeze Frame:
                    Fault Status: 00100100
                    Fault Priority: 0
                    Fault Frequency: 6
                    Reset counter: 255
                    Mileage: 88465 km
                    Time Indication: 0
                    Date: 2014.10.17
                    Time: 18:20:26

             Freeze Frame:
                    RPM: 1628 /min
                    Load: 32.1 %
                    Speed: 81.0 km/h
                    Temperature: 86.0°C
                    Temperature: 17.0°C
                    Absolute Pres.: 1010.0 mbar
                    Voltage: 13.843 V

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 02E-927-770.clb
   Part No SW: 02E 300 012 F    HW: 02E 927 770 AJ
   Component: GSG DSG AG6     440 1906  
   Revision: 04844002    Serial number: 00000810270086
   Coding: 0000020
   Shop #: WSC 05311 000 00000
   VCID: 1325094D32758FD278-8046

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 3C0-614-109-C4.clb
   Part No SW: 3C0 614 109 R    HW: 3C0 614 109 R
   Component: J104    C4 440 V3   0013  
   Revision: --025---    Serial number: 00000786375621
   Coding: 0026015
   Shop #: WSC 22690 959 72028
   VCID: 2D51BFB5B41139224E-8078

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 5K0-907-044.clb
   Part No SW: 5K0 907 044 AK    HW: 5K0 907 044 AK
   Component: Climatronic   130 0303  
   Revision: 00002001    
   Coding: 0000000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Climatronic A01001
   ROD: EV_ClimaAutoBasis_VW46.rod
   VCID: 74E76AD1DFBB28EAC1-8020

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 3C0-937-049-30-H.lbl
   Part No SW: 3C8 937 049 E    HW: 3C8 937 049 E
   Component: Bordnetz-SG     H54 2602  
   Revision: 00H54000    Serial number: 00000009102846
   Coding: E3E68F8B00041A0047978F0017000000000AFB47E4400165170000000000
   Shop #: WSC 05124 000 00000
   VCID: 3365A9CD52356FD218-8066

   Subsystem 1 - Part No: 3C8 955 119 A  Labels: 1KX-955-119.CLB
   Component: Wischer 151008 022  0602  
   Coding: 00046997
   Shop #: WSC 05124  

   Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
   Component: RLS     241108 054  0402  
   Coding: 00209133
   Shop #: WSC 05124  

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J791)       Labels:. 1T0-919-475.clb
   Part No SW: 1T0 919 475 L    HW: 1T0 919 475 
   Component: PARKHILFE PLA H07 0021  
   Revision: --------    Serial number: 06530828700746
   Coding: 101107
   Shop #: WSC 22690 959 72028
   VCID: 4487FA11C79BD86AB1-8010

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg        Labels: 3C0-907-567.clb
   Part No SW: 3C0 907 567 J    HW: 3C0 907 567 J
   Component: AC201  RDW A    031 0232  
   Revision: 00031000    Serial number: 00000000033432
   Coding: 0010000
   Shop #: WSC 05311 000 00000
   VCID: 326BACC9AD2F66DA13-8066

1 Fault Found:
00272 - Function Disabled due to Electromagnetic Interference 
            012 - Electrical Fault in Circuit - Intermittent - MIL ON
             Freeze Frame:
                    Fault Status: 10101100
                    Fault Priority: 7
                    Fault Frequency: 3
                    Reset counter: 88
                    Mileage: 88526 km
                    Time Indication: 0
                    Date: 2014.10.17
                    Time: 19:20:53

             Freeze Frame:
                    Count: 16


-------------------------------------------------------------------------------
Address 14: Susp. Elect. (J250)       Labels:. 3C0-907-376.clb
   Part No SW: 3C0 907 376     HW: 3C0 907 376 
   Component: DAEMPFUNGS-SG H07 0069  
   Revision: 00000000    Serial number: 04110801910002
   Coding: 030180
   Shop #: WSC 05314 000 00000
   VCID: 66C300999167CA7A4F-8032

1 Fault Found:
01319 - Control Module for Distance Control (J428) 
            013 - Check DTC Memory - Intermittent
             Freeze Frame:
                    Fault Status: 00101101
                    Fault Priority: 6
                    Fault Frequency: 6
                    Reset counter: 88
                    Mileage: 88465 km
                    Time Indication: 0
                    Date: 2014.10.17
                    Time: 18:20:26

             Freeze Frame:
                    Bin. Bits: 00000000 00000001


-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 5N0-959-655.lbl
   Part No SW: 5N0 959 655     HW: 5N0 959 655 
   Component: J234__31G VW10 HI   1815  
   Revision: 19013000    Serial number: 0039BPPQ1MPI  
   Coding: 0012615
   Shop #: WSC 05311 000 00000
   VCID: 7AFB44E935DF5E9A9B-802E

   Subsystem 1 - Serial number: 6333FTS614583018 

   Subsystem 2 - Serial number: 6343FTS613293018 

   Subsystem 3 - Serial number: 6353ETS6GFROVVNJ 

   Subsystem 4 - Serial number: 6363ETS6PA1PVVNJ 

   Subsystem 5 - Serial number: 00000000000000000

   Subsystem 6 - Serial number: 00000000000000000

No fault code found.

[minorityracer]

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 3C0-953-549-SW25.lbl
   Part No SW: 3C0 953 549 AJ    HW: 3C0 953 549 AJ
   Component: J0527               0030  
   Revision: 00032000    Serial number: 3C5953507CR   
   Coding: 0201821
   Shop #: WSC 22690 959 72028
   VCID: 74E76AD117BB28EAC1-8020

   Subsystem 1 - Part No: 3C8 959 537 B  Labels: 3C8-959-537.CLB
   Component: E221__MFL-TAP   H4ÿ 0021  
   Coding: 00000227
   Shop #: WSC 00000  

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 3C8-920-xxx-17.clb-SRI1
   Part No SW: 3C8 920 870 B    HW: 3C8 920 870 B
   Component: KOMBI         H05 0107  
   Serial number: 00000000000000
   Coding: 140F00
   Shop #: WSC 22690 959 89399
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04040
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 2A5BB4A94DFF2E1AAB-807E

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 3C0-907-530-V3.clb
   Part No SW: 3C0 907 530 J    HW: 3C0 907 951 
   Component: J533__Gateway   H13 0152  
   Revision:   H13       Serial number: 2900R08A268263
   Coding: FDAFFF07000203009003
   Shop #: WSC 22690 959 72028
   VCID: 285F4EA19BF31C0ABD-807C

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD        Labels: 0AY-907-554-V1.clb
   Part No SW: 0BS 907 554 A    HW: 0BS 907 554 A
   Component: Haldex 4Motion      4013  
   Coding: 0000005
   Shop #: WSC 00000 000 00000
   VCID: 4487FA11079BD86AB1-8010

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 3C0-959-433-25.clb
   Part No SW: 3C0 959 433 AM    HW: 3C0 959 433 AM
   Component:    IMMO         052 0383  
   Revision: 00052000    Serial number: VWZCZ000000000
   Shop #: WSC 131071 1023 2097151
   VCID: 75E157D51CC131E2F6-8020

   Subsystem 1 - Part No: 3C0 905 861 G
   Component:    ELV          027 0380
   3C0905861G     ELV          027 0380   

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: 3C0-959-760.lbl
   Part No SW: 3C8 959 760     HW: 3C8 959 760 
   Component: J810                0801  
   Revision: 00002000    Serial number: 00000000000000
   Coding: 0000001
   Shop #: WSC 05311 000 00000
   VCID: 72EB6CC96DAF26DAD3-8026

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MAX3.clb
   Part No SW: 1T0 959 701 L    HW: 1K0 959 793 P
   Component: J386  TUER-SG FT    1534  
   Revision: 71009005    Serial number: 00000689288926
   Coding: 0005047
   Shop #: WSC 05311 000 00000
   VCID: 408FF6011383C44A95-8014

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 E
   Component: EPS_ZFLS Kl. 212    2501  
   Revision: 00H15000    
   Shop #: WSC 02069 000 90108
   VCID: 2C57B2B18F0B302A59-8078

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 3C0-959-433-46.clb
   Part No SW: 3C0 959 433 AM    HW: 3C0 959 433 AM
   Component:    KSG PQ46 RDK 052 0412  
   Revision: 00052000    Serial number: VWZCZ000000000
   Coding: 00910A0001860E76360494157008DFCE105801
   Shop #: WSC 05311 000 00000
   VCID: 75E157D51CC131E2F6-8020

   Subsystem 1 - Component:   Sounder No Answer     

   Subsystem 2 - Part No: 3C0 951 171 C
   Component: Neigungssensor  004 0611

   Subsystem 3 - Part No: 3C0 951 171 C
   Component: Innenraumueberw.004 0611

1 Fault Found:
01134 - Alarm Horn (H12) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 47
                    Mileage: 88477 km
                    Time Indication: 0
                    Date: 2014.10.17
                    Time: 18:30:34


-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II (J533_)       Labels:. 1K0-907-532.clb
   Part No SW: 1K0 907 532     HW: 3C0 907 951 
   Component: J533__Gateway H13 0152  
   Revision: --------    Serial number: 2900R08A268263
   Coding: 01010001
   Shop #: WSC 22690 959 72028
   VCID: 66C300999167CA7A4F-8032

1 Fault Found:
01512 - Control Module for Sliding Roof 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 47
                    Mileage: 88458 km
                    Time Indication: 0
                    Date: 2014.10.17
                    Time: 18:13:15


-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MAX3.clb
   Part No SW: 1T0 959 702 L    HW: 1K0 959 792 P
   Component: J387  TUER-SG BT    1534  
   Revision: 71009005    Serial number: 00000512389004
   Coding: 0005046
   Shop #: WSC 05311 000 00000
   VCID: 4189F3051889CD429A-8014

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake        Labels: 5N0-907-801.clb
   Part No SW: 3C8 907 801 A    HW: 3C8 907 801 A
   Component: J540 EPB3  VW-10498 0003  
   Revision:   009       Serial number: 00000000201445
   Coding: 0000057
   Shop #: WSC 05311 000 08193
   VCID: 285F4EA19BF31C0ABD-807C

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 5M0-907-357-V2.lbl
   Part No SW: 5M0 907 357 C    HW: 5M0 907 357 C
   Component: AFS-Steuergeraet    0136  
   Revision: 00H04000    Serial number:               
   Coding: 3526024
   Shop #: WSC 05311 000 00000
   VCID: 3467AAD1573B68EA01-8060

   Subsystem 1 - Part No: 1K0 941 329   Labels: 3D0-941-329.CLB
   Component: AFS-Lst.-Modul l    0003  
   Coding: 00000053

   Subsystem 2 - Part No: 1K0 941 329   Labels: 3D0-941-329.CLB
   Component: AFS-Lst.-Modul r    0003  
   Coding: 00000053

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
   Part No SW: 6RF 035 187 E    HW: 6RD 035 187 B
   Component: Radio         565 Y510  
   Revision: --------    Serial number: VWZZZ4J6204502
   Coding: 0E000400040010
   Shop #: WSC 00078 790 00101
   VCID: 4B95D12DEAC5171270-801E

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
   Part No SW: 3C8 959 703 B    HW: 1K0 959 795 Q
   Component: J388   TUER-SG HL   0309  
   Revision: 43004101    Serial number: 00000000705035
   Coding: 0000144
   Shop #: WSC 05311 000 00000
   VCID: 3169A3C5A8295DC26A-8064

No fault code found.

-------------------------------------------------------------------------------
Address 65: Tire Pressure        Labels: 3C0-959-433-65.lbl
   Part No SW: 3C0 959 433 AM    HW: 3C0 959 433 AM
   Component:    RDK              0453  
   Revision: 00052000    Serial number: VWZCZ000000000
   Coding: 0161211
   Shop #: WSC 131071 1023 2097151
   VCID: 75E157D51CC131E2F6-8020

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
   Part No SW: 3C8 959 704 B    HW: 1K0 959 794 Q
   Component: J388   TUER-SG HR   0309  
   Revision: 43004101    Serial number: 00000000723869
   Coding: 0000144
   Shop #: WSC 05311 000 00000
   VCID: 326BACC9AD2F66DA13-8066

No fault code found.

End-------------------------(Elapsed Time: 02:56)--------------------------

[kamold]

Hmm voltage looks good.
I'd probably start with just unplugging the radar and checking the pins and connector for any corrosion or damage.
Clean with contact cleaner.
If it persists would have to look at the relay and fuse for the radar.

Sent from my SM-G960F using Tapatalk

[minorityracer]

Hmm voltage looks good.
I'd probably start with just unplugging the radar and checking the pins and connector for any corrosion or damage.
Clean with contact cleaner.
If it persists would have to look at the relay and fuse for the radar.

Sent from my SM-G960F using Tapatalk

I was going to give that a shot but it seems the front bumper has to come off to access the radar connector. Is that correct?

[kamold]

You can just take the centre part of the grill out. No need to take the whole bumper off.
In fact you can just undo the top screws and the ones at the front and then pull it out enough while leaving the bottom connected and get access to it

Sent from my SM-G960F using Tapatalk

[minorityracer]

Thanks. I was planning on removing the grill tomorrow but I went on a long drive today (~200km) and the cruise control worked flawlessly.


I remember now that the radar cruise stopped working the morning after a car wash. Maybe the car wash was too aggressive with the water jet and some water got into the connector, and it has now dried out?

[kamold]

Thanks. I was planning on removing the grill tomorrow but I went on a long drive today (~200km) and the cruise control worked flawlessly.


I remember now that the radar cruise stopped working the morning after a car wash. Maybe the car wash was too aggressive with the water jet and some water got into the connector, and it has now dried out?

Sounds plausible.
Would give it an inspection and clean regardless.

Sent from my SM-G960F using Tapatalk

[minorityracer]

Sounds plausible.
Would give it an inspection and clean regardless.

Just wanted to post back and say I inspected the radar unit, reseated it and cleaned the connector a few months ago and have had no problems since.

I had to remove the silver grill - bumper stayed on. I tried without removing the grill but I couldn't disconnect the radar connector and I was flexing the grill too much in the process.

Removing the grill was tricky with lots of stiff plastic clips making loud noises. I had to reach inside the grill and release the clips as I pulled the grill out.

The connector for the radar unit was also very stiff and the release tab is unfortunately located to the rear, hidden between the radar unit and the radiator. I had to use a flat bladed screwdriver to depress the release tab and pull on the connector. There were a few bruised knuckles in the process. The radiator fins are sharp.

The radar unit itself is just a friction fit onto three screw heads.

The whole thing was a bit of an ordeal but it's all sorted now.
It seems that the plastic polymer that VW uses is not very stable and seems to perish with age. This makes all the plastic tabs and loom connectors very stiff.