2006 Bentley GT Roof Module light sensor settings

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stevieshutts

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Hi

I have been having problems with the rain sensor on my 2006 Bentley GT. I bought a replacement sensor (from a VW Phaeton, but I believe the part is identical). The rain sensor now works, but the automatic lighting now turns on the headlights regardless of the light level. I ran a full scan of the vehicle and Module 38 says:

Address 38: Roof Electronics Labels: None
Part No: 3W0 907 135 E
Component: Dachmodul 0707
Coding: 0002461
Shop #: WSC 00083 000 00000
VCID: 3828D30F4E4B170BAA3-5160

1 Fault Found:
01520 - Rain and Light Recognition Sensor (G397)
005 - No or Incorrect Basic Setting / Adaptation

I can open module 38, but I can't work out how to set it up. Please could you tell me what I need to do.

Best regards

Steve

Code: 
Monday,03,August,2020,20:01:12:35276
VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
VCDS Version: 20.4.2.0  HEX-V2 CB: 0.4513.4
Data version: 20200730 DS317.0
www.Ross-Tech.com


VIN: SCBCE63W66C038747   License Plate: D8RDD
Mileage: 141790km-88104mi   Repair Order: 1



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


Chassis Type: 3W (XX - All Addresses)
Scan: 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14
          15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28
          29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C
          3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50
          51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63 64
          65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78
          79 7A 7B 7C 7D 7E 7F 80 81 82 83 84 85 86 87 88 89 8A 8B 8C
          8D 8E 8F 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F A0
          A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3
          B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF C0 C1 C2 C3 C4 C5
          C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7
          D8 D9 DA DB DC DD DE DF E0 E1 E2 E3 E4 E5 E6 E7 E8 E9
          EA EB EC ED EE EF F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB
          FC FD FE FF
 
VIN: SCBCE63W66C038747   Mileage: 141790km-88104miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: None
   Part No SW: 07C 906 018 DE    HW:             
   Component: BY-6.0L-TT      G  ª7947  
   Revision: 00ÿTT       Serial number:  000-00008.02.
   Coding: 0000173
   Shop #: WSC 00000 000 08192
   VCID: 6B823C434F9D6C93971-513C

No fault code found.
Readiness: 0000 0001

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09E-927-156.lbl
   Part No SW: 09E 927 760 M    HW: GS1 904 1
   Component: AG6 09E 6.0L W12TT  1909  
   Coding: 0000101
   Shop #: WSC 00083 000 00000
   VCID: 3A2CC9077047051B5C7-5160

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 3W0-614-517-V1.lbl
   Part No: 3W0 614 517 D
   Component: ESP 5.7 4WD     H01 0021  
   Coding: 0007878
   Shop #: WSC 00082 000 00000
   VCID: 3634DD37445FE17BB8F-51CE

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth.        Labels: 3D0-909-13x-05.lbl
   Part No SW: 3D0 909 137 B    HW: 5WK 484 95
   Component: 40 Kessy            6700  
   Revision: 67005915    Serial number: VWZ3Z0F3458674
   Coding: 0422125
   Shop #: WSC 00083 000 00000
   VCID: 26140D7794FF91FB08F-5160

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: ELV                 XXXX

No fault code found.

-------------------------------------------------------------------------------
Address 06: Seat Mem. Pass        Labels: 3W0-959-759.clb
   Part No: 3W0 959 759 A
   Component:    CM Seat Pass.    0009  
   Coding: 0000001
   Shop #: WSC 00082 106 59495
   VCID: 47CAA0F333B568F3D39-5160

No fault code found.

-------------------------------------------------------------------------------
Address 07: Control Head        Labels: 3D0-035-00x-07.lbl
   Part No: 3W0 035 007 M
   Component:    ZAB COCKPIT      0251  
   Coding: 0400335
   Shop #: WSC 00083 000 00000
   VCID: 3634DD37445FE17BB8F-5160

1 Fault Found:
01325 - Control Module for Tire Pressure Monitoring (J502) 
            004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 3W7-907-040.clb
   Part No: 3W0 907 040 E
   Component: Climatronic BY614   2010  
   Coding: 0000101
   Shop #: WSC 00000 000 00000
   VCID: 3332E423572DF4539F1-5160

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 3D0-937-049-V1.clb
   Part No: 3D0 937 049 H
   Component: STG.Bordnetz        5101  
   Coding: 0000107
   Shop #: WSC 00083 000 00000
   VCID: 2F3AE853BB05D0B3FB9-5160

1 Fault Found:
00907 - Intervention load Management 
            000 - -

-------------------------------------------------------------------------------
Address 11: Engine II        Labels: None
   Part No SW: 07C 906 018 DE    HW:             
   Component: BY-6.0L-TT      G  ª7947  
   Revision: 97ÿTT       Serial number:  000-00008.02.
   Coding: 0000173
   Shop #: WSC 00000 000 08192
   VCID: 6B823C434F9D6C93971-5160

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 3D0-909-601.lbl
   Part No: 3D0 909 601 E
   Component: 0P Airbag 8.4E+ H10 0936  
   Coding: 0012368
   Shop #: WSC 00083 000 00000
   VCID: 25160A7BE9F99AE3015-5160

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 3Wx-920-xxx-17.lbl
   Part No: 3W8 920 840 
   Component: KOMBIINSTRUMENT RB8 0610  
   Coding: 0021403
   Shop #: WSC 00083 000 00000
   VCID: 79AE160B35C1CE0315D-5160

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<>CAN      0101  
   Coding: 0000006
   Shop #: WSC 00083 000 00000
   VCID: 70B82B2F66BB8F4BA23-5160

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: None
   Part No SW: 3D0 909 137 B    HW: 5WK 484 95
   Component: 40 Kessy            6700  
   Revision: 67005915    Serial number: VWZ3Z0F3458674
   Coding: 0422125
   Shop #: WSC 00083 000 00000
   VCID: 26140D7794FF91FB08F-5160

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: ELV                 XXXX
   XXXXXXXXXXX ELV                 XXXX   

No fault code found.

-------------------------------------------------------------------------------
Address 33: OBD-II        Labels: 
   VCID: 55F67ABBFC09CA63515-513C


-------------------------------------------------------------------------------
Address 34: Level Control        Labels: 3Wx-907-553-34.clb
   Part No: 3W0 907 553 A
   Component: LUFTFDR.-CDC- 3C3V0 7203  
   Coding: 0005561
   Shop #: WSC 00082 106 61108
   VCID: 3828D30F4E4B170BAA3-5160

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: 3W0-959-759.clb
   Part No: 3W0 959 760 A
   Component:    CM Seat Driver   0008  
   Coding: 0000001
   Shop #: WSC 00082 106 59495
   VCID: 3FDAB8136B6520336B9-5160

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: None
   Part No: 3W0 919 887 B
   Component:    NAVIGATION       0185  
   Coding: 0400000
   Shop #: WSC 00083 000 00000
   VCID: 46D4ADF734BF71FB28F-5160

No fault code found.

-------------------------------------------------------------------------------
Address 38: Roof Electronics        Labels: None
   Part No: 3W0 907 135 E
   Component: Dachmodul           0707  
   Coding: 0002461
   Shop #: WSC 00083 000 00000
   VCID: 3828D30F4E4B170BAA3-5160

1 Fault Found:
01520 - Rain and Light Recognition Sensor (G397) 
            005 - No or Incorrect Basic Setting / Adaptation

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 3D0-959-933.lbl
   Part No: 3D0 959 933 F
   Component: 55 HSG              0101  
   Coding: 0000040
   Shop #: WSC 00082 106 59495
   VCID: 3332E423572DF4539F1-4B00

   Subsystem 1 - Part No: 3W8 959 701 C
   Component: Tuersteuergeraet FS 1002

   Subsystem 2 - Part No: 3W8 959 702 C
   Component: Tuersteuergeraet BF 1002

   Subsystem 3 - Part No: 3W8 959 703 B
   Component: Tuersteuergeraet HL 0401

   Subsystem 4 - Part No: 3W8 959 704 B
   Component: Tuersteuergeraet HR 0401

   Subsystem 5 - Part No: 3W0 909 610 E
   Component: SX HDSG             1707

   Subsystem 6 - Part No: 7L0 907 719 A
   Component:    Neigungssensor   0020

3 Faults Found:
01134 - Alarm Horn (H12) 
            000 - -
01504 - Bulb for License-Plate Light (X) 
            009 - Open or Short to Ground - Intermittent
00316 - Bulbs for Rear Illumination 
            009 - Open or Short to Ground

-------------------------------------------------------------------------------
Address 47: Sound System        Labels: 7Lx-035-4xx-47.lbl
   Part No: 3W0 035 456 D
   Component: 12K-AUDIOVERST      4123  
   Shop #: WSC 00000 000 00000
   VCID: 3536DA3B5959EA63B15-5160

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake        Labels: 3W0-907-801.clb
   Part No SW: 3W0 907 801 D    HW: 3W0 907 801 D
   Component: EPB  BC6HX24    HC6 X240  
   Coding: 0022413
   Shop #: WSC 10508 123 70098
   VCID: 372AD03343551873A39-5160

No fault code found.

-------------------------------------------------------------------------------
Address 54: Rear Spoiler        Labels: 1C0-959-733.lbl
   Part No: 1C0 959 733 H
   Component: Heckspoiler         0002  
   VCID: 3038EB2FA33BCF4BE23-51F2

No fault code found.

-------------------------------------------------------------------------------
Address 57: TV Tuner        Labels: None
   Part No SW: 3D0 919 148     HW: 3D0 919 148 
   Component: TV-Tuner            0160  
   Revision: R0H16000    Serial number: 91100500688402
   Coding: 0000003
   Shop #: WSC 00083 790 00000
   VCID: 678A4073537548F3F39-5160

No fault code found.

-------------------------------------------------------------------------------
Address 68: Wiper Electr.        Labels: 3Wx-955-023.clb
   Part No: 3W2 955 023 E
   Component: Wische&  
   Shop #: WSC 00000 725 65552
   VCID: 392ED60B75410E0355D-5160

No fault code found.

-------------------------------------------------------------------------------
Address 71: Battery Charger        Labels: 3D0-915-181.lbl
   Part No: 3D0 915 181 D
   Component: Batteriemanagement  2800  
   Shop #: WSC 00000 000 00000
   VCID: 2410177FE2C363EB16B-5160

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist        Labels: Redir Fail!
   Part No: 3W0 919 283 A
   Component: 02 Einparkhilfe     0303  
   Shop #: WSC 00000 000 00000
   VCID: 3B22CC037F7D3C13471-5160

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: None
   Part No SW: 3W0 035 385 H    HW: 3W0 035 385 H
   Component: rSAP ECU            0037  
   Coding: 0000272
   Shop #: WSC 00000 000 00000
   VCID: 3A2CC9077047051B5C7-5160

No fault code found.


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


Address 38,3W0 907 135 E,recoded (Short coding),from,0002461,to,0002461,(00083/000/00000),

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
 
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DrPeter

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Hi Steve,

I have your email and I am doing some research and will post here and also respond to that email as well....

Thank you for your patience,

drpeter
 
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DrPeter

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Hello again,

I have some information that maybe of help....

As per the VIN of the vehicle, the G397 part number should be [3W0-955-559], any other part number may not work correctly and could have strange results.

It looks like a VW Phaeton G397 part number is different [3B0-955-559] or [3D0-955-559], depending on the year of the vehicle and the tint of the glass. I would not suggest to use a Phaeton part at this time.

With VCDS have a look at the Measuring Value Blocks (MVB) in the [38-Roof Electronics] controller to verify the status of the G397-Rain/Light sensor.

MVB-011, field (1) = Rain/Light Sensor Connection _--> Should read [On]
MVB-011, field (2) = Rain Sensor Status ---> Should read [OK]

MVB-011, field (3) = Light Sensor Status _--> Should read [OK]
MVB-011, field (4) = Auto Light Installed ---> Should read [Installed]​



We do have a Ross-Tech wiki page for this fault code: 01520 - Rain and Light Recognition Sensor (G397)



The G397-Rain Light sensor has a three pin connector and is wired as:
Pin 1 = power (reg/green)
Pin 2 = ground (brown)
Pin 3 = signal (yellow/grey) to Pin-18 ([38-Roof Electronics] controller)
​

I would suggest to check the wiring, connections and use a known good G397 with the correct part number for the vehicle.


As always, we recommended to use the Factory Wiring Diagrams/Repair Manuals when attempting to diagnose and repair these vehicles.


Again, thank you for your patience, hope this helps

drpeter
 
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stevieshutts

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Hi drpeter

Thank you for your help. I logged in to module 38 and looked at MVB-011 as you suggested:

MVB-011, field (1) = Rain/Light Sensor Connection _--> Should read [On] .................ON

MVB-011, field (2) = Rain Sensor Status ---> Should read [OK] ................................OK

MVB-011, field (3) = Light Sensor Status _--> Should read [OK] ...............................OK

MVB-011, field (4) = Auto Light Installed ---> Should read [Installed] ......................NOT INSTALLED

Does this mean not installed on the roof module and can I change it to installed? Or does it not see the component installed on the sensor, in which case why would it show Field 3 as OK.

The sensor I installed has a different vehicle ID on the part number, but in all other respects appears identical. The Bentley GT and VW Phaeton are, I believe, essentially the same platform with the same components (although with stunningly different price tags - second hand Bentley part £200, second hand Phaeton part £15 - so even if I can't make it work it's worth a try).

Once again, thank you for your help - very much appreciated.

Steve
 
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Hi Steve,

I agree with DrPeter about fitting the 3W0 part, but also note that the CGT could have either IR or non IR glass and the rain sensor needs to match the type of glass fitted (there are two part numbers to choose from IIRC). The part number may not match the original if the glass type has been changed by a screen fitter in the past. You would then need to ensure the roof electrics module is correctly coded.

Mr. M
 
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DrPeter

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Hello,

Does this mean not installed on the roof module and can I change it to installed? Or does it not see the component installed on the sensor, in which case why would it show Field 3 as OK.
Click to expand...
You can not change the value, as this is an indication of what is installed. I do believe the [38-Roof Electronics] controller is expecting to see that field (4) as "Installed" based on these PR-Codes your VIN has. this could be due to the non Bentley part number?
[8K7 = Autonomous driving headlights]
[8Q3 = Dynamic headlight range control (self-adjusting while driving) ]​



Based on the VIN of the vehicle, the windshield is "Clear Glass" with the PR-Code of [4GY = Laminated windshield].
Thus the part number of the G397 for this vehicle is [3W0 955 559].

The PR-Code [4GE] is the other choice and that is for "Green Glass", part number [3W0 955 559 A] <--- Does NOT fit this vehicle.


As far as the coding of the [[38-Roof Electronics] ], you have two choices:
Coding: [0002461] = "IR Windscreen Fitted"
Coding: [0002493] = "IR Windscreen NOT Fitted"​


I have to assume the "IR Windscreen" is the "Green Glass"? if so then maybe the [38-Roof Electronics] is NOT coded correctly.

Try and code the [38-Roof Electronics] to [0002493] and then clear the codes?



Let us know how this works for you!

drpeter
 
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stevieshutts

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Hi

I tried re-coding the roof module, but it made no difference.

Having resigned myself to the fact that the VW sensor must be different, I re-installed the Bentley sensor and looked at the roof module again. This time MVB 0011 showed all OK and auto lighting installed. Out of interest I changed the coding to IR windscreen not fitted and MVB 0011 ch4 changed to 'not installed' and threw a fault again - so I reverted the coding and it cleared.

The really bizarre outcome of all of this, is that the Bentley sensor now appears to be working correctly. I have no idea why or how this has happened, but so long as it keeps working, I am a very happy bunny.

Thank you for your help - I have been very impressed with your approach and support and I couldn't have asked for more.

Stay safe

Steve
 
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