2012 Audi A8 MMI visible only for a few seconds after screen comes up

   #1  

Stew

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I have a similar problem that seems to have many answers, which one is right for me? My MMI only displays for a few seconds after the screen rotates up, then goes dark. If I lower the screen then it will do the same thing again when I raise it. I have the 02259 Information Display fault and Control Head (Front) (J685). I bought the Fiber Optic loops to troubleshoot as the optic tester in VCDS does not seem to work for me. I have bypassed all the units I found in the trunk (Amplifier, Backup Camera and one other not sure what it is) with no change in symptoms. All the displays seem to work, in the cluster, plus I can see the backup camera for those brief few seconds when the screen pops up. I believe I need to replace this unit (J685) is this my first step, and can I test this somehow?
 
   #2  

Uwe

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   #3  

Stew

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Code:
Sunday,31,December,2017,17:05:00:30886
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 17.1.3.0 (x64)
Data version: 20170320 DS267.7
www.Ross-Tech.com


VIN: WAUAVAFD2CN008675   License Plate: 


Chassis Type: FD (4H0)
Scan: 01 02 03 05 06 08 09 10 15 16 17 19 1B 22 28 34 36 3B 42 46
          47 52 53 56 5F 62 6C 6D 6F 72 81 88 89 8F 90

VIN: WAUAVAFD2CN008675   Mileage: 92818km-57674miles

01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
06-Seat Mem. Pass -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
10-Park/Steer Assist -- 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
1B-Active Steering -- Status: OK 0000
22-AWD -- Status: OK 0000
28-HVAC, Rear -- Status: OK 0000
34-Level Control -- Status: OK 0000
36-Seat Mem. Drvr -- Status: OK 0000
3B-Sensor Elect. -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
6C-Back-up Cam. -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
6F-Centr. Conv. II -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
81-Gear Shift -- Status: OK 0000
88-Multicont. Seat Driver -- Status: OK 0000
89-Multicont. Seat Pass. -- Status: OK 0000
8F-Pretens. Frt Left -- Status: OK 0000
90-Pretens. Frt Right -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (------CDRA)       Labels: None
   Part No SW: 4H0 907 560 C    HW: 4H0 907 560 
   Component: 4.2l V8/4V    H07 0004  
   Revision: N5H07---    
   Coding: 0106000A290F0168
   Shop #: WSC 22145 444 13987
   ASAM Dataset: EV_ECM42FSI0114H0907560C 001005
   ROD: EV_ECM42FSI0114H0907560C.rod
   VCID: 2A5BBB454D878F1197-807E

No fault code found.
Readiness: 1110 1101

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels: 0BK-927-156.clb
   Part No SW: 4H1 927 158 BR    HW: 0BK 927 156 K
   Component: 0BK 42 FSIUSA H08 1001  
   Revision: --H08---    
   Coding: 000002
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_TCMALX51011 002018
   ROD: EV_TCMALX51011_002.rod
   VCID: 01093CE99071AC49E6-8054

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 4H0-907-379.clb
   Part No SW: 4H0 907 379 B    HW: 4H0 907 379 B
   Component: ESP PREMIUM   H10 0273  
   Revision: --------    Serial number: --------------
   Coding: 44FEB200227F4D00E200
   Shop #: WSC 02311 785 00200
   ASAM Dataset: EV_ESPPremi 005006
   ROD: EV_ESPPremi_005_AU64.rod
   VCID: 3169AC296051FCC956-8064

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels: 8K0-907-064-05.clb
   Part No SW: 4H0 907 064 DD    HW: 4H0 907 064 BD
   Component: BCM2 2.0      H31 0510  
   Revision: 00002001    
   Coding: 0D872000000000000000
   Shop #: WSC 41337 001 1048576
   VCID: 6ED37755B9EFA3310B-803A

   Subsystem 2 - Part No SW: 4H0 905 852 C    HW: 4H0 905 852 C
   Component: J764 ELV MLB  H39 0046 
   Serial number: 2311000111128001    

No fault code found.

-------------------------------------------------------------------------------
Address 06: Seat Mem. Pass
Cannot be reached

-------------------------------------------------------------------------------
Address 08: Auto HVAC
Cannot be reached

-------------------------------------------------------------------------------
Address 09: Cent. Elect.
Cannot be reached
Unable to communicate with address 09. Are you sure the doors are unlocked?

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist
Cannot be reached

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels: 4H0-959-655.clb
   Part No SW: 4H0 959 655 D    HW: 4H0 959 655 D
   Component: Airbag10.43   H41 0041  
   Revision: --------    Serial number: 003JS00158S6
   Coding: 303143303230303030344A55304C34483053
   Shop #: WSC 02311 785 00200
   ASAM Dataset: EV_AirbaAU10BPAAU64X 001014
   ROD: EV_AirbaAU10BPAAU64X_AU57.rod
   VCID: 377D92318E3522F918-8062

   Seat occupied recognition: 
   Subsystem 1 - Part No SW: 4H0 959 339     HW: 4H0 959 339 
   Component: BF-Gewichtss.  H02 0040 
   Serial number: 5850000R11706015V7
   Coding: 000000

   Crash sensor for side airbag: driver side: 
   Serial number: 3575HRB405T0IRE24GI/

   Crash sensor for side airbag: front passenger side: 
   Serial number: 3585HRB405H0JR9Q703L

   Crash sensor for side airbag: rear: driver side: 
   Serial number: 3515JRB404R0M38E3P7G

   Crash sensor for side airbag: rear: passenger side: 
   Serial number: 3525JRB404T0M38E9HEO

   Crash sensor for front airbag: driver side: 
   Serial number: 3554VRB40550LMIQCPKT

   Crash sensor for front airbag: front passenger side: 
   Serial number: 3564VRB40550LMIQF930

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels: 4H0-953-568.clb
   Part No SW: 4H0 953 568 H    HW: 4H0 953 568 H
   Component: Lenks.Modul   H03 0005  
   Revision: --------    Serial number: 90815KGB0000S 
   Coding: 000434
   Shop #: WSC 02311 785 00200
   VCID: 387F910D8B2B2D8111-806C

   Subsystem 1 - Part No SW: 4H0 951 528 A    HW: 4H0 951 528 A
   Component: E221 - MFL  H06 0009 
   Serial number: 01 02 2011  11103630

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels: 4H0-920-xxx-17.clb
   Part No SW: 4H0 920 920 E    HW: 4H0 920 920 E
   Component: TBenUSA------ H36 0373  
   Revision: 32480030    Serial number: 658280711593038
   Coding: 0B660801B300D705020000
   Shop #: WSC 02313 785 00200
   ASAM Dataset: EV_RBD4K 004040
   ROD: EV_RBD4K.rod
   VCID: 275D42715E95B27988-8072

   Analog_clock: 
   Subsystem 1 - Part No SW: 4H0 919 204 H    HW: 4H0 919 204 H
   Component: Analoguhr D4  H05 0224 
   Serial number: 1110707000150       

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels: None
   Part No SW: 4H0 907 468 F    HW: 4H0 907 468 C
   Component: J533--Gateway H08 0213  
   Revision: --------    Serial number: 00000000198870
   Coding: 00C1034A00
   Shop #: WSC 02311 785 00200
   ASAM Dataset: EV_GatewUDS 001025
   ROD: EV_GatewUDS_AU57.rod
   VCID: 3467A53D9F43C9E13D-8060

   Battery Monitoring Control Module: 
   Subsystem 1 - Part No SW: 4H0 915 181     HW: 4H0 915 181 
   Component: J367-BDM  H07 0140 
   Serial number: 00000000005650927867

No fault code found.

-------------------------------------------------------------------------------
Address 1B: Active Steering (J792)       Labels: None
   Part No SW: 4H0 907 144 B    HW: 4H0 907 144 B
   Component: DYNAMIKLENK.  H06 0090  
   Revision: 51001005    Serial number: --------------
   Coding: 8B0000
   Shop #: WSC 02311 785 00200
   VCID: 275D42715695B27988-8072

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD (J492)       Labels: 4H0-907-163.clb
   Part No SW: 4H0 907 163 A    HW: 4H0 907 163 A
   Component: 4 Wheel Drive H14 0013  
   Serial number: 000807110001018
   ASAM Dataset: EV_AllWheelDiffeQSPFR 003023
   ROD: EV_AllWheelDiffeQSPFR.rod
   VCID: 275D42715E95B27988-8072

No fault code found.

-------------------------------------------------------------------------------
Address 28: HVAC, Rear (E265)       Labels: None
   Part No SW: 4H0 919 158 D    HW: 4H0 919 158 D
   Component: Klima Fond    H15 0062  
   Coding: 0000000000
   Shop #: WSC 02313 785 00200
   ASAM Dataset: EV_AirCondiHeck 001039
   ROD: EV_AirCondiHeck_AU64.rod
   VCID: 3169AC296051FCC956-8064

No fault code found.

-------------------------------------------------------------------------------
Address 34: Level Control (J197)       Labels: 4G0-907-553.clb
   Part No SW: 4H0 907 553 C    HW: 4H0 907 553 
   Component: LUFE-DAEMPFER H17 0096  
   Coding: 008004
   Shop #: WSC 02311 785 00200
   ASAM Dataset: EV_AirSuspe 003022
   ROD: EV_AirSuspe_VW51.rod
   VCID: 2C57BD5D4773912165-8078

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136)       Labels: None
   Part No SW: 4H0 959 760 E    HW: 4H0 959 760 E
   Component: MEM-FS        H08 0153  
   Revision: AA000000    Serial number: 00000010262958
   Coding: C0183B0085053201010001010101112131313333203333
   Shop #: WSC 02313 785 00200
   VCID: 356198399C39D0E90A-8060

No fault code found.

-------------------------------------------------------------------------------
Address 3B: Sensor Elect. (J849)       Labels: None
   Part No SW: 4H0 907 637 A    HW: 4H0 907 637 A
   Component: SARA 6D red   H02 0015  
   Revision: --------    Serial number: EJ1BPA3700FZBM0
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_SARA 006014
   ROD: EV_SARA_006.rod
   VCID: 2D51B0597C69982972-8078

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels: None
   Part No SW: 4H0 959 793 M    HW: 4H0 959 793 E
   Component: TSG FA        H02 0166  
   Revision: --------    Serial number: 0000118373747 
   Coding: 011F1F205E0062C202000006
   Shop #: WSC 02312 785 00200
   VCID: 4385F6E1C2ED7E59B4-8016

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels: 4H0-907-064-46.clb
   Part No SW: 4H0 907 064 DD    HW: 4H0 907 064 BD
   Component: BCM2 2.0      H31 0510  
   Revision: 00002001    Serial number: 0155050077    
   Coding: 0106023A00FA7585B0B0C7C0020100000000000000000000000000000000
   Shop #: WSC 02313 785 00200
   VCID: 6ED37755B9EFA3310B-803A

   Subsystem 1 - Part No SW: 4H0 959 719     HW: 4H0 959 719 
   Component: GTO BF  H01 0070 
   Serial number: 00000000000000040548

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 

   Subsystem 3 - Part No SW: 4H0 959 591     HW: 4H0 959 591 
   Component: J245 PS50.028  H07 0006 
   Serial number:     WOO12681585     
   Coding: 001F00

   Subsystem 4 - Part No SW: 4H0 947 135 BK    HW: 4H0 947 135 BK
   Component: Dachelektroni  H11 0080 
   Serial number: A2011000000000448584
   Coding: 010000

   Subsystem 5 - Part No SW: 4H0 959 591 A    HW: 4H0 959 591 A
   Component: V252 PS010  H05 0005 
   Serial number:     WOO1000HPY8     

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels: None
   Part No SW: 4G0 035 223 B    HW: 4G0 035 223 A
   Component: BOSE G3 C7    H07 0130  
   Revision: CJ007000    Serial number: 00000000033986
   Coding: 030000
   Shop #: WSC 02313 785 00200
   VCID: 1C376D9D1FD361A115-8048

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels: None
   Part No SW: 4H0 959 792 E    HW: 4H0 959 792 E
   Component: TSG BF        H02 0166  
   Revision: --------    Serial number: 0000118563049 
   Coding: 011F1F205E0062C202000006
   Shop #: WSC 02312 785 00200
   VCID: 3A7B8B05B5273F91E7-806E

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----)       Labels: 4H0-907-801.clb
   Part No SW: 4H0 907 801 E    HW: 4H0 907 801 A
   Component: EPB-4         H03 0012  
   Revision: --------    Serial number: 00000000117835
   ASAM Dataset: EV_ParkiBrake 001022
   ROD: EV_ParkiBrake_VW51.rod
   VCID: 2A5BBB454D878F1197-807E

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (R)       Labels: Redir Fail!
   Part No SW: 4H0 035 082 B    HW: 4H0 035 082 
   Component: Radio U SIRIU H52 0076  
   Revision: AB001007    Serial number: 155GR0B7510504
   Coding: 020007010000000001
   Shop #: WSC 02311 785 00200
   VCID: 204F596D33BB4541C9-8074

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels: 4E0-035-6xx-5F.clb
   Part No SW: 4H0 035 746 A    HW: 4H0 035 746 
   Component: H-BNT-NA      H48 0380  
   Revision: --------    Serial number: 035G 0B7501788
   Coding: 020200000001F1EF45128B0E00000003140001000000000000
   Shop #: WSC 22145 444 13987
   VCID: 26434F75519FAB71B3-8072

   Subsystem 1 - Part No: 8R0 060 884 AD
   Component: NAR 2011  0505 

   Subsystem 2 - Part No SW: 4H1 919 600 F    HW: 4H1 919 600 
   Component: E380 BDT D4  H09 0064 
   Serial number: 00000000045605      

   Subsystem 3 - Part No: 8R0 060 961 B
   Component: CD-Database  3371 

2 Faults Found:
02259 - Information Display and Control Head (Front) (J685) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 5
                    Fault Frequency: 2
                    Reset counter: 217
                    Mileage: 92818 km
                    Time Indication: 0
                    Date: 2017.12.31
                    Time: 16:59:41

             Freeze Frame:
                    Voltage: 14.50 V

03787 - Rotation Mechanism for Display Module Front 
            003 - Mechanical Failure
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 5
                    Fault Frequency: 2
                    Reset counter: 217
                    Mileage: 92818 km
                    Time Indication: 0
                    Date: 2017.12.31
                    Time: 16:59:41


-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels: None
   Part No SW: 4H0 959 795 A    HW: 4H0 959 795 A
   Component: TSG HL        H04 0162  
   Revision: --------    Serial number: 0000118414450 
   Coding: 010F1F20400062C202000006
   Shop #: WSC 02312 785 00200
   VCID: 39799409B0213489EE-806C

No fault code found.

-------------------------------------------------------------------------------
Address 6C: Back-up Cam.        Labels: 4H0-907-441.clb
   Part No SW: 4H0 907 441 A    HW: 4H0 907 441 
   Component: SG Rueckfahrkamera  0061  
   Revision: --H04---    Serial number: 525 PA8J17D3CB
   Coding: 1081002
   Shop #: WSC 22145 444 13987
   VCID: 26434F75919FAB71B3-8072

No fault code found.

-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (----)       Labels: None
   Part No SW: 4H0 959 107 P    HW: 4H0 959 107 M
   Component: HDSG-Modul    H11 0036  
   Revision: 10011001    Serial number: 197100260
   Coding: 0210044100
   Shop #: WSC 02311 785 00200
   ASAM Dataset: EV_DeckLidContrUnit 001025
   ROD: EV_DeckLidContrUnit.rod
   VCID: 3B758E01B21D0699FC-806E

No fault code found.

-------------------------------------------------------------------------------
Address 6F: Centr. Conv. II (J773)       Labels: None
   Part No SW: 4H0 907 412     HW: 4H0 907 412 
   Component: ALM           H05 0004  
   Revision: --------    Serial number: 000000040791
   Coding: 000000
   Shop #: WSC 02311 785 00200
   ASAM Dataset: EV_Ambie 001008
   ROD: EV_Ambie.rod
   VCID: 63C516616A2D1E5994-8036

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels: None
   Part No SW: 4H0 959 795 A    HW: 4H0 959 795 A
   Component: TSG HR        H04 0162  
   Revision: --------    Serial number: 0000118413875 
   Coding: 010F1F20400062C202000006
   Shop #: WSC 02312 785 00200
   VCID: 39799409B0213489EE-806C

No fault code found.

-------------------------------------------------------------------------------
Address 81: Gear Shift (J587)       Labels: None
   Part No SW: 4H1 927 731 A    HW: 4H1 927 731 A
   Component: GSM-LL        H07 0083  
   Revision: 0L0D5012    Serial number: SN110607  0219
   ASAM Dataset: EV_GSM2x3Mono 001017
   ROD: EV_GSM2x3Mono.rod
   VCID: 2B55BE41427D96196C-807E

No fault code found.

-------------------------------------------------------------------------------
Address 88: Multicont. Seat Driver (J873)       Labels: None
   Part No SW: 4H0 907 182 H    HW: 4H0 907 182 H
   Component: IVB           H07 0042  
   Serial number: 00001145338002
   Coding: 764FF2
   Shop #: WSC 02313 785 00200
   ASAM Dataset: EV_IVBDriveSideFrnt 001003
   ROD: EV_IVBDriveSideFrnt.rod
   VCID: 2F6DAA517665EA3940-807A

No fault code found.

-------------------------------------------------------------------------------
Address 89: Multicont. Seat Pass. (J872)       Labels: None
   Part No SW: 4H0 907 182 H    HW: 4H0 907 182 H
   Component: IVB           H07 0042  
   Serial number: 00001145336801
   Coding: 364FF2
   Shop #: WSC 02313 785 00200
   ASAM Dataset: EV_IVBPasseSideFrnt 001003
   ROD: EV_IVBDriveSideFrnt.rod
   VCID: 2F6DAA517665EA3940-807A

No fault code found.

-------------------------------------------------------------------------------
Address 8F: Pretens. Frt Left (J854)       Labels: 4H0-980-94x-RGS.clb
   Part No SW: 4H0 980 945     HW: 4H0 980 945 
   Component: RGS-VL        H05 0070  
   Coding: 00060000031F030000030801424CD8010000
   Shop #: WSC 02313 785 00200
   ASAM Dataset: EV_RGS_L 002004
   ROD: EV_RGS_L.rod
   VCID: 6FED6A51B6E5AA3900-803A

No fault code found.

-------------------------------------------------------------------------------
Address 90: Pretens. Frt Right (J855)       Labels: 4H0-980-94x-RGS.clb
   Part No SW: 4H0 980 946     HW: 4H0 980 946 
   Component: RGS-VR        H05 0070  
   Coding: 00060000031F030000030801424CD8010000
   Shop #: WSC 02313 785 00200
   ASAM Dataset: EV_RGS_R 002004
   ROD: EV_RGS_R.rod
   VCID: 70EF692DABDBB5C119-8024

No fault code found.

End-------------------------(Elapsed Time: 05:55)--------------------------
 
Last edited by a moderator:
   #4  

Uwe

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Based on that scan, this does not seem to be an optical ("MOST") bus problem.

And 5F does report some faults related to the problem described:

Code:
02259 - Information Display and Control Head (Front) (J685) 
            004 - No Signal/Communication

03787 - Rotation Mechanism for Display Module Front 
            003 - Mechanical Failure

-Uwe-
 
   #5  

Stew

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So is the original question valid? Do I need to replace the J685 unit? Is there a way to test this, or do I replace and see if that solves the problem? That seems to be where I'm at. I just don't understand why the screen comes on every time it is raised. Has anyone had similar symptoms? I read all about the MOST ring and even purchased the bypasses, but that didn't change any of the symptoms. Everything works except the display, but the screen does function if only briefly.
 
   #6  

Uwe

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So is the original question valid? Do I need to replace the J685 unit?
If I had any personal experience that was relevant, I'd happily share it. :)

-Uwe-
 
   #7  

jyoung8607

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Code:
03787 - Rotation Mechanism for Display Module Front 
            003 - Mechanical Failure
$5 says it's deploying and turning on as per normal, but there's some little microswitch that's supposed to tell it the screen has fully come out, and that isn't happening. So the display turns back off as it's not supposed to be on when inside the dash.

I don't know what the cheapest or easiest fix for that would be, but I bet that's the failure mode.
 
   #8  

Stew

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Well, I'll see what I can get to this weekend. Maybe when I start to disassemble the dash to pull the unit I'll see something obvious. Even if I need to replace the unit I need to pull it first because I'm not 100% sure on the part number or version if that makes any difference other than some programming. Thanks for the input.
 
   #9  

MasterTommy

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Check the wiring first. It moves, so a broken or near-broken wire sounds a lot more plausible to me.
 
   #10  

Stew

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Well now its not any better, after spending a better part of the evening pulling out the trim from the dash, I was able to pull the head unit (cd player/sd card reader). The screen is still in the car because of a two wire connection on a ten pin connector doesn't seem to come undone, a youtube video definitely showed that they cut this wire. Anyway in all of my moving around components and wiring now the screen doesn't come on at all. Back at it on Monday.
 
   #11  

MasterTommy

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Well now its not any better, after spending a better part of the evening pulling out the trim from the dash, I was able to pull the head unit (cd player/sd card reader). The screen is still in the car because of a two wire connection on a ten pin connector doesn't seem to come undone, a youtube video definitely showed that they cut this wire. Anyway in all of my moving around components and wiring now the screen doesn't come on at all. Back at it on Monday.

Even more evidence that this could be ‘just’ a wiring issue.
 
   #12  

Stew

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First I had to cut what I believe is the power to the display. There are two micro switches. The fully raised switch is broken, the metal tab is missing and can not push the switch. Now that I have gotten this far, I still can't remove the unit because the switches don't have disconnects on them and I don't want to cut anymore wires. I am going to try and bypass the micro switch in a always on position (jump the wires together) and see if it will work this way. I can't really see replacing the micro switch as the unit is very hard to work on in the car. Hopefully I can get the unit working without having to reinstall it all the way so I can do some test runs.
 
   #13  

jyoung8607

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$5 says it's deploying and turning on as per normal, but there's some little microswitch that's supposed to tell it the screen has fully come out, and that isn't happening. So the display turns back off as it's not supposed to be on when inside the dash.

... There are two micro switches. The fully raised switch is broken, the metal tab is missing and can not push the switch.

I accept Paypal. :cool:

(no not really. good luck though.)
 
   #14  

Stew

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Well if I haven't destroyed something else on the process of getting this far. I broke a couple of plastic tabs getting the various pieces out. So will see. Still more confident than my local Audi dealer, as they can't even put the car back together correctly after warranty work.
 
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   #15  

Stew

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Well turns out the power was intermittent to the screen. I don't know why, cabling or something. Anyway I tapped into another source and seems to be working. The micro switches have been removed, not sure of their exact function, maybe to position the screen just right, either way the motor stalls out in full up or down.
 
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