Passat B7 ACC radar blocked?

   #1  

siLc

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A year ago or we retrofitted ACC to my 2011 Passat B7. Thus far, ACC has been working fine but after the weather has gone somewhat damp, after driving some time ACC and Front Assist disengages itself (Front Assist light switches from green to amber). The DTC stored is as follows. I can remove it and it won't come back until ACC disengages itself again. Mostly after ACC has disengaged it won't re-engage during the same ignition cycle but sometimes it will, usually during motorway travel. This is rather bothersome as the normal cruise control also doesn't work.

Code:
Address 13: Auto Dist. Reg       Labels: 3AA-907-567.clb
Control Module Part Number: 3AA 907 567 A    HW: 3AA 907 567 
  Component and/or Version: AC201  RDW A    036 0170
           Software Coding: 0010000
            Work Shop Code: WSC 05311 000 08193
                      VCID: 3829D5506E58C597897-806C
1 Fault Found:

00233 - Sensor for Automatic Distance Control Coverage Area Blocked 
            003 - Mechanical Failure
             Freeze Frame:
                    Fault Status: 01100011
                    Fault Priority: 6
                    Fault Frequency: 10
                    Reset counter: 230
                    Mileage: 121686 km
                    Time Indication: 0
                    Date: 2007.14.01
                    Time: 13:16:27

             Freeze Frame:
                    Count: 58
Somewhat up-to-date autoscan:
Code:
Saturday,25,August,2018,13:25:55:46309
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.2.1.2 (x64)  HEX-V2 CB: 0.4411.4
Data version: 20180518 DS287.1
www.Ross-Tech.com


VIN: WVWZZZ3CZCE0xxxxx   License Plate: 


Chassis Type: 3C-VW46 (7N0)
Scan: 01 02 03 08 09 10 13 15 16 17 19 25 36 42 44 46 47 4F 52 53
          55 5F 61 62 65 69 72 A5

VIN: WVWZZZ3CZCE0xxxxx   Mileage: 119980km-74552miles

01-Engine -- Status: OK 0000
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: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: Malfunction 0010
36-Seat Mem. Drvr -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: OK 0000
69-Trailer -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
A5-Frt Sens. Drv. Assist -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (CDG)       Labels: 03C-906-021-CDG.clb
   Part No SW: 03C 906 021 Q    HW: 03C 907 309 D
   Component: 4414 CNG 14K31      6368  
   Revision: E8H06---    Serial number: VWZCZ000000000
   Coding: 0000077
   Shop #: WSC 30382 001 1048576
   VCID: 290F0014A5F26C1F069-807C

No fault code found.
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 0AM-927-769.clb
   Part No SW: 0AM 300 058 P    HW: 0AM 927 769 D
   Component: GSG DSG AG7     431 5279  
   Revision: 00043014    Serial number: CU501109246351
   Coding: 0000020
   Shop #: WSC 51156 001 1048576
   VCID: 3E25C3484C7CFBA743B-806A

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 3AA-614-109.clb
   Part No SW: 3AA 614 109 AJ    HW: 3AA 614 109 AG
   Component: J104   C2 450M VEB8 0023  
   Revision: --H07---    Serial number: 00000005519400
   Coding: 0246129
   Shop #: WSC 00046 000 00000
   VCID: 75B71C6439CA78FF521-8020

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 5K0-907-044.clb
   Part No SW: 1K8 907 044 T    HW: 1K8 907 044 T
   Component: Climatronic   H05 0304  
   Revision: 00001K04    
   Coding: 0019004802
   Shop #: WSC 35110 790 50316
   ASAM Dataset: EV_Climatronic A01010
   ROD: EV_ClimaAutoBasis_VW36.rod
   VCID: 40D9BDB03A088D57317-8014

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. User\3AA-937-087.lbl
   Part No SW: 3AA 937 087 E    HW: 3AA 937 087 E
   Component: BCM PQ47 H+   413 0455  
   Revision: BC413001    
   Coding: 0008000000000000001C0288740029F423DD008863618F60E48046240041
   Shop #: WSC 05311 123 12345
   VCID: 3C21C9405660E9B76DF-8068

   Subsystem 1 - Part No SW: 3AB 955 419     HW: 3AB 955 419   Labels: 1KX-955-119.CLB
   Component: Wischer 02091  10  0603 
   Coding: 00B795

   Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
   Component: RLS 240911 05  54  0403 
   Coding: 0650CD

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J791)       Labels:| 5Q0-919-298.clb
   Part No SW: 1K8 919 475 D    HW: 5Q0 919 298 
   Component: PARKHILFE PLA H12 0480  
   Revision: --------    Serial number: 39431407800539
   Coding: 0031063211
   Shop #: WSC 06792 128 28888
   ASAM Dataset: EV_EPHVA2CVW364GP00 001010
   ROD: EV_EPHVA2CVW364GP00_VW36.rod
   VCID: 3B23CA5C53EEEE8F645-806E

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg        Labels: 3AA-907-567.clb
   Part No SW: 3AA 907 567 A    HW: 3AA 907 567 
   Component: AC201  RDW A    036 0170  
   Revision: 00036000    Serial number: 00000000666298
   Coding: 0010000
   Shop #: WSC 05311 000 08193
   VCID: 3829D5506E58C597897-806C

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 5N0-959-655.lbl
   Part No SW: 5N0 959 655 R    HW: 5N0 959 655 R
   Component: J234__101 VW10 HI   1918  
   Revision: 22014000    Serial number: 003K0PDDP8WA  
   Coding: 0012337
   Shop #: WSC 05311 000 00000
   VCID: 4CC199800AC05937DDF-8018

   Subsystem 1 - Serial number: 6332MTS660882451 

   Subsystem 2 - Serial number: 6342MTS650762441 

   Subsystem 3 - Serial number: 6351HTS6L728GAKJ 

   Subsystem 4 - Serial number: 6361HTS6CMQGFAKJ 

   Subsystem 5 - Serial number: 00000000000000000

   Subsystem 6 - Serial number: 00000000000000000

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 3C0-953-569.clb
   Part No SW: 3C9 953 501 BG    HW: 5K0 953 569 T
   Component: LENKS.MODUL   014 0140  
   Revision: FF010040    Serial number: 20110916100545
   Coding: 3982A50001
   Shop #: WSC 00015 115 12345
   ASAM Dataset: EV_VW360SteerWheelUDS A03004
   ROD: EV_VW360SteerWheelUDS.rod
   VCID: 6FBB2E0C5716422F98D-803A

   Multifunction steering wheel control module: 
   Subsystem 1 - Part No SW: 3C8 959 537 D    HW: 3C8 959 537 D  Labels: 3C8-959-537.CLB
   Component: E221__MFL-TK6  H06 0022 
   Coding: E20000

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 3C8-920-xxx-17.clb-SRI1
   Part No SW: 3AA 920 881 X    HW: 3AA 920 881 X
   Component: KOMBI         H03 0705  
   Serial number: 00000000000000
   Coding: 161F01
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04727
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 49CFA09409324C1FE69-801C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7N0-907-530-V2.clb
   Part No SW: 7N0 907 530 BL    HW: 7N0 907 530 AN
   Component: J533  Gateway H56 1682  
   Revision:   H56       Serial number: 26041600F10905
   Coding: 462006
   Shop #: WSC 00046 123 12345
   VCID: 7BA30A5C13EE2E8F245-802E

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 3C0-959-433-25.clb
   Part No SW: 3AA 959 799 C    HW: 3AA 959 799 C
   Component:    IMMO         043 0404  
   Revision: 00043000    Serial number: VWZCZ000000000
   Shop #: WSC 131071 1023 2097151
   VCID: 48C9A5901EB8B517F97-801C

   Subsystem 1 - Part No: 3C0 905 861 J
   Component:    ELV          029 0380
   3C0905861J     ELV          029 0380   

1 Fault Found:
01176 - Key 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01110100
                    Fault Priority: 1
                    Fault Frequency: 1
                    Reset counter: 100
                    Mileage: 117300 km
                    Time Indication: 0
                    Date: 2018.07.21
                    Time: 13:17:00


-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J810)       Labels: 3C0-959-760.lbl
   Part No SW: 3C8 959 760 A    HW: 3C8 959 760 A
   Component: Sitzmemory    H05 2601  
   Revision: 00H05000    
   Coding: 000039
   Shop #: WSC 00000 000 00000
   VCID: 3333E27C7B3E26CFBC5-8066

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 3C0-959-70X-GEN4.clb
   Part No SW: 3AA 959 701 A    HW: 3C0 959 793 C
   Component: TUER-SG FT    002 0533  
   Revision: 12110009    Serial number: 0003531640
   Coding: 0000FF
   Shop #: WSC 05311 115 12345
   ASAM Dataset: EV_TSGFPQ35BRFVW46X A04001
   ROD: EV_TSGFPQ35BRFVW46X_VW32.rod
   VCID: 3537DC6475CA38FF921-8060

   Slave Driver: 
   Subsystem 1 - Part No SW: 3AA 959 703     HW: 3C0 959 794 B  Labels: 1K0-959-70X-GEN4.CLB
   Component: J388__TSG-HL  004 0407 
   Serial number: 00000001579121      
   Coding: 0000D8

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 5N1-909-144.clb
   Part No SW: 5N1 909 144 M    HW: 5N1 909 148 G
   Component: J500__APA-BS KL.308 1002  
   Revision: 1AH03734    Serial number: 00112640139601
   Coding: 0000258
   Shop #: WSC 05311 000 00000
   VCID: 3C21C9405A60E9B76DF-8068

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. User\3C0-959-799-46.lbl
   Part No SW: 3AA 959 799 C    HW: 3AA 959 799 C
   Component:    KESSY PQ47   043 0359  
   Revision: 00043000    Serial number: VWZCZ000000000
   Coding: 0091020052C30E76300494157E00CFCE705800000436B8
   Shop #: WSC 01581 666 28888
   VCID: 48C9A5901EB8B517F97-801C

   Subsystem 1 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HORN H05 1501

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

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

   Subsystem 4 - Part No: 3AA 962 243 E
   Component: GEB.F.Heckoef       0813

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (R12)       Labels: 5K0-035-456.clb
   Part No SW: 5K0 035 456     HW: 5K0 035 456 
   Component: KonzernAmp 8K H06 0340  
   Revision: --------    Serial number: BP218119856626
   ASAM Dataset: EV_AudioVerst8KanalBNO2 A01003
   ROD: EV_AudioVerst8KanalBNO2.rod
   VCID: 678B462C7FE69A6FD0D-8032

No fault code found.

-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II (J520)       Labels:. 1K0-907-532.clb
   Part No SW: 7N0 907 532     HW: 7N0 907 530 AN
   Component: EZE_2         H56 1682  
   Revision:   H56       Serial number: 26041600F10905
   Coding: 00000008
   Shop #: WSC 00046 123 12345
   VCID: 6FBB2E0C5796422F98D-803A

   Subsystem 1 - Part No SW: 3AA 919 204 A    HW: 3AA 919 204 A
   Component: Analoguhr  004 0003 

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 3C0-959-70X-GEN4.clb
   Part No SW: 3AA 959 702 A    HW: 3C0 959 792 C
   Component: TUER-SG BT    002 0533  
   Revision: 14110009    Serial number: 0003559798
   Coding: 0000FE
   Shop #: WSC 05311 115 12345
   ASAM Dataset: EV_TSGBPQ35BRFVW46X A04001
   ROD: EV_TSGBPQ35BRFVW46X_VW32.rod
   VCID: 3635DB6868CC33E79BB-8062

   Slave Passenger: 
   Subsystem 1 - Part No SW: 3AA 959 704     HW: 3C0 959 795 B  Labels: 1K0-959-70X-GEN4.CLB
   Component: J389__TSG-HR  004 0407 
   Serial number: 00000002312513      
   Coding: 0000D8

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake        Labels: 3AA-907-801.clb
   Part No SW: 3AA 907 801 G    HW: 3AA 907 801 G
   Component: J540 EPB4  VW-64783 0009  
   Revision:   H19       Serial number: 00000000255785
   Coding: 0022157
   Shop #: WSC 05311 000 00000
   VCID: 3537DC64794A38FF921-8060

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range (J745)       Labels:. 5M0-907-357-V3.clb
   Part No SW: 5M0 907 357 E    HW: 7L6 907 357 C
   Component: AFS-ECU       H04 0105  
   Revision: --------    Serial number: --------------
   Coding: 021200000B000200
   Shop #: WSC 05311 115 00000
   ASAM Dataset: EV_HeadlRegulVWAFSPt 002014
   ROD: EV_HeadlRegulVWAFSPt_VW46.rod
   VCID: 3635DB6868CC33E79BB-8062

   Subsystem 1 - Part No SW: 3D0 941 329     HW: 3D0 941 329   Labels: 3D0-941-329.CLB
   Component: LeiMo links  H04 0011 
   Coding: 230000

   Subsystem 2 - Part No SW: 3D0 941 329     HW: 3D0 941 329   Labels: 3D0-941-329.CLB
   Component: LeiMo rechts  H04 0011 
   Coding: 230000

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-STD2.clb
   Part No SW: 5C0 035 680 B    HW: 5C0 035 680 B
   Component: MU-S-N-ER     H20 0252  
   Serial number: VWZAZ2R0221946
   Coding: 02740401AA00000011110003000908001F0100C400200100CC
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_MUStd4CTSAT 001022
   ROD: EV_MUStd4CTSAT_VW27.rod
   VCID: 20191D30DA48AD57517-8074

   Data medium: 
   Subsystem 1 - Part No SW: 5NA 919 866     HW: -----------
   Component: ECE1 2018/19  --- 1030 
   Serial number: --------------------

No fault code found.

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels:. 1K0-907-534.clb
   Part No SW: 7N0 907 534     HW: 7N0 907 530 AN
   Component: Batt.regelung H56 1682  
   Serial number: 26041600F10905
   Coding: 03220864
   Shop #: WSC 00046 123 12345
   VCID: 71BF287441A254DF8E9-8024

   Subsystem 1 - Part No SW: 1K0 915 181 H    HW: 1K0 915 181 A
   Component: J367-BDM  H07 0180 
   Serial number: 00000000008900563909

No fault code found.

-------------------------------------------------------------------------------
Address 65: Tire Pressure (J502)       Labels: 3AA-907-273.clb
   Part No SW: 3AA 907 273 F    HW: 5Q0 907 273 
   Component: RDKBERU30     H04 0011  
   Serial number: 40000000050185
   ASAM Dataset: EV_RDKBERU30 005005
   ROD: EV_RDKBERU30_005.rod
   VCID: 372BD66C6FC6CAEF80D-8062

No fault code found.

-------------------------------------------------------------------------------
Address 69: Trailer (J345)       Labels:. 7N0-907-383.clb
   Part No SW: 7N0 907 383     HW: 7N0 907 383 
   Component: Anhaenger     H09 0101  
   Revision: 3I001002    Serial number: 00000158723392
   Coding: 4106040000000000
   Shop #: WSC 05314 000 00000
   VCID: 73B3227C3BBE66CF7C5-8026

No fault code found.

-------------------------------------------------------------------------------
Address A5: Frt Sens. Drv. Assist (R242)       Labels:| 3Q0-980-65X-A5.clb
   Part No SW: 3Q0 980 654 F    HW: 3Q0 980 654 
   Component: MQB_B_MFK     H04 0220  
   Serial number: 25021511P10526
   Coding: 000407020000040100221355C180880090000E100020
   Shop #: WSC 28257 001 104857
   ASAM Dataset: EV_MFKBoschMQBB 001001
   ROD: EV_MFKBoschMQBB_VW36.rod
   VCID: 3A2DCF585CD4D7877F3-806E

No fault code found.

End----(Elapsed Time: 01:52, VBatt start/end: 11.7V/11.7V. VIgn 11.7V)-----
I removed the front grille and checked that there are no obstructions to the radar dome and there weren't any. Though the thing is when retrofitting ACC, I purchased a damaged VW ACC badge, which had a single stone chip and a somewhat large crack on the face of it but is OK otherwise. This crack has enlarged substantially and now reaches across the center of the badge - could this cause this fault? A new badge is somewhere around 170€. Should I try driving without the badge?
 
   #2  

downtime

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Yes, try to drive without the VW badge. It could be that the crack is causing this problem, it blocks the radar view due to that and it then disengages the radar.

The mechanical failure part of the dtc is a bit worrying. That indicates a problem with the radar unit itself. But try first without the badge to see if that is the mechanical part of the failure and the car just get overdramatic in error messaging due to that :D
 
   #3  

siLc

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I removed the badge and went for a drive. Needless to say but ACC worked perfectly. I guess its time to splurge on a new badge...
 
   #4  

kamold

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I removed the badge and went for a drive. Needless to say but ACC worked perfectly. I guess its time to splurge on a new badge...
Might be able to help you out there...is it a 3D0853601F that you need? If so I have one unopened in a box because I ordered the wrong part a while back.
 
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   #5  

siLc

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Might be able to help you out there...is it a 3D0853601F that you need? If so I have one unopened in a box because I ordered the wrong part a while back.
Yes it is. PM-d.

Edit:
Wanna know a funny thing? Yesterday after the test drive without the badge, I was convinced a new badge was in order so I hastily put the old badge back into the grille to cover up the radar as it was rainy. This, of course, broke a couple of mounting tabs as they were brittle, but the badge is mounted. Today after driving to work, ACC no longer disabled itself and detected cars driving in front of me kind of OK. This was later confirmed when I drove to get lunch. I don't think this is a permanent solution. Thanks to kamold, a new badge will arrive my way in a week :thumbs:
 
Last edited:
   #6  

siLc

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Today I mounted the new ACC badge I got from kamold and now ACC/Front Assist works as it should. I inspected the old badge and when applying pressure to the crack, water squirted out. So thats that :D

The timing couldn't be more perfect. A friend of mine was visiting Australia and brought the badge back with him.
 
   #7  

kamold

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The global Ross-tech fraternity at work! Glad I could add something useful to your friend's luggage and help someone on the other side of the world, as I have been also from other great members of this forum :thumbs:
 
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