Page 1 of 2 12 LastLast
Results 1 to 10 of 15

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

  1. #1
    Verified VCDS User
    Join Date
    Jan 2018
    Location
    USA
    Posts
    8
    Post Thanks / Like

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

    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. #2
    Benevolent Dictator Uwe's Avatar
    Join Date
    Jan 2014
    Location
    Earth
    Posts
    18,459
    Post Thanks / Like
    Blog Entries
    1
    Please start by posting an Auto-Scan.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  3. #3
    Verified VCDS User
    Join Date
    Jan 2018
    Location
    USA
    Posts
    8
    Post Thanks / Like
    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 Uwe; 01-09-2018 at 08:37 AM. Reason: CODE tags

  4. #4
    Benevolent Dictator Uwe's Avatar
    Join Date
    Jan 2014
    Location
    Earth
    Posts
    18,459
    Post Thanks / Like
    Blog Entries
    1
    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-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  5. #5
    Verified VCDS User
    Join Date
    Jan 2018
    Location
    USA
    Posts
    8
    Post Thanks / Like
    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. #6
    Benevolent Dictator Uwe's Avatar
    Join Date
    Jan 2014
    Location
    Earth
    Posts
    18,459
    Post Thanks / Like
    Blog Entries
    1
    Quote Originally Posted by Stew View Post
    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-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  7. #7
    FoRT jyoung8607's Avatar
    Join Date
    Feb 2014
    Location
    Cincinnati, OH
    Posts
    1,830
    Post Thanks / Like
    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.
    Silence gives consent.

  8. Likes PetrolDave, Uwe liked this post
  9. #8
    Verified VCDS User
    Join Date
    Jan 2018
    Location
    USA
    Posts
    8
    Post Thanks / Like
    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.

  10. #9
    Verified VCDS User
    Join Date
    Dec 2016
    Location
    NL
    Posts
    328
    Post Thanks / Like
    Check the wiring first. It moves, so a broken or near-broken wire sounds a lot more plausible to me.

  11. #10
    Verified VCDS User
    Join Date
    Jan 2018
    Location
    USA
    Posts
    8
    Post Thanks / Like
    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.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •