Originally posted by kamold
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I did try coding the camera on the weekend and got a blank screen, but no OPS when going out of reverse - maybe I should just drop that idea... Shoot me a PM with a price, and I'll buy the PCD module off you. -
Only trouble with coding for a camera is you will just get a black screen when you select reverse.Originally posted by Simo View Post
When you go back to a forward gear you should get the ops screen though...unless it only works with a highline camera module. Not sure about that as I have an upgraded compatible 7n0 highline camera module installed now.
I have a spare 1k8 PDC module but don't have a harness. Can get a harness from Aidu auto.
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Thanks Kamold - that's definitely a surprise!
Sounds like PDC upgrade then. Although knowing that it can send OPS if there is a camera, I might have a play to see if I can trick the PDC into thinking it has a camera and sending the right signal - as you did say you were able to get OPS on its own, when you were trying to get camera as well...Leave a comment:
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I had a chat to a friend about this and this seems to be the sitation:
3C8 (and also 3AA) PDC modules with Discover/Composition media only show OPS IF you also have a RVC. This is just some sort of compatibility oddity.
I had a 3c8 module with rvc and discover. Since upgraded it to 1k8 and then PLA 2.0
1K8 PDC module will allow you to have only OPS or RVC image with OPS overlay.
I know 1k8 works with just OPS as MY16 Jetta has this combination from factory.
1k8 PDC module requires a 3 connector to 2 connector adapter harness.Last edited by kamold; 15-05-2018, 12:52 AM.Leave a comment:
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No luck with the 7N0 Gateway and original PDC, so it looks like I might need to upgrade to the 1k8 PDC. Hopefully this also works with the 3C8 Gateway - I'd rather give up the OPS display than have to do everything else that required with the 7N0 Gateway.
Interestingly, I can't find anywhere that specifically says you need the newer PDC for OPS to work (unless, as mentioned in this thread, it's to enable the camera overlay). Even the stores selling retrofit kits mention nothing about OPS.Leave a comment:
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The new head unit is responding to the CAN commands on the infotainment bus same as an older unit at address 56 would. It can see a signal for mute, reverse, volume up etc.
There is no handshake as such in CAN. Just messages on a series of buses which connect and are filtered via the CANbus gateway.
I've never actually actually done any work with a Composition Media unit. I am only making assumptions based on what works in Discover Media.
2 ideas: It may be that the PDC messages are not being passed by the 3c8 gateway correctly - this is easily confirmed by testing with the 7N0 gateway in place.
Failing that it may be that you need a 1k8 PDC module like the Composition Media unit is supposed to see in a factory configuration like in an MY16 Jetta or Tiguan...Leave a comment:
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Dang. No luck...Originally posted by kamold View Post
I have a theory, which I'll try out on the weekend.
While I still have the old gateway connected, the steering wheel, MFD and reverse switch (volume lowering works) are all talking to the headunit, even though it's technically on an unknown address: 5F. I figure this is because they did their handshake with the new gateway installed, and now know how to talk to each other.
OPS on the other hand, was not set up with the right adaptation in the head unit with the new gateway, so never did the initial handshake, and therefore can't communicate.
Solution - swap the new gateway back in, perform the handshake, then swap it back out. Voila.
Ok, it's just a theory, but it's the only one making sense to me right now.Leave a comment:
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Try coding the first 2 bytes of your 5F infotainment:
Current: 0284
New: 0274Leave a comment:
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Because I really didn't want to go through the whole process of my dash apart and swapping the gateways over, I thought I might see if I can still access the head unit through the 3C0 gateway...
Surprise, surprise, while I couldn't select it from the installed list, or add it to the gateway, I could access the 5F address directly, do the adaptions and any long coding (although there was none of that to do).
The unit appeared to accept all adaptions (restarted everything, checked the values, and the adaptions reported the appropriate changes), although still no parking display...
Now I'm confused - is it possible these adaptations didn't really go through (because of the wrong gateway). If they didn't then why did the changes persist after restarting the car and VCDS?
Of course if I got my parking display up, I would have been pretty chuffed by the whole result. Sadly not the case.
Kamold - what are your thoughts? I'm leaning towards something else being missing - I'm convinced these adaptations went through via the old gateway.Leave a comment:
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I have a hunch my OPS display issue might be an adaptation question...
According to this, there's an adaptation setting for OPS at ID 313, but that looks like it's MFD display; as well as some other Park Assist settings at 641 and 642 which I'm guessing might need to be enabled.
Looks like it might be a swap back to the 7N0 CAN and give it a go...
BTW - if anyone is interested, there's some half decent info on the MIB2 units here - almost a user manual, but not quite.Leave a comment:
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Yes you will need to clear the fault for immobilizer and see if it comes back.
For the OPS display, you will need to put the 7N0 gateway back in and then check the following adaptation channels in 5F infotainment:
ENG122229-ENG117742-Car_Function_List_BAP_Gen2-SWA_0x1A - change to "activated"
ENG122229-ENG117743-Car_Function_List_BAP_Gen2-SWA_0x1A_msg_bus - change to "Terminal 15"
ENG122228-ENG117685-Car_Function_List_CAN_Gen2-PDC_audio_lowering - change to "Available"
ENG122228-ENG117686-Car_Function_List_CAN_Gen2-PDC_audio_lowering_msg_bus - change to "Terminal 15"
ENG122227-ENG117496-Car_Function_Adaptations_Gen2-menu_display_pdc - change to "Activated"
ENG122227-ENG117499-Car_Function_Adaptations_Gen2-menu_display_pdc_standstill - change to "Activated"Leave a comment:
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VCDS Scan after putting the 3C0 Gateway back in:
Interestingly the Immobiliser still has a fault reading, but I assume this is because I didn't clear the faults before re-running the scan.
Code:Monday,07,May,2018,21:43:42:38493VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64 Chassis Type: 3C-VW46 (3C0) Scan: 01 02 03 08 09 10 15 16 17 19 22 25 36 42 44 46 47 52 53 55 56 62 65 72 77 VIN: WVWZZZ3CZAE038764 Mileage: 94960km-59005miles 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: Sporadic communication error 1000 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: Malfunction 0010 22-AWD -- 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 52-Door Elect, Pass. -- Status: OK 0000 53-Parking Brake -- Status: OK 0000 55-Headlight Range -- Status: OK 0000 56-Radio -- Status: Sporadic communication error 1000 62-Door, Rear Left -- Status: OK 0000 65-Tire Pressure -- Status: OK 0000 72-Door, Rear Right -- Status: OK 0000 77-Telephone -- Status: Not registered 0001 ------------------------------------------------------------------------------- Address 02: Auto Trans Labels: 02E-927-770.clb Part No SW: 02E 300 012 E HW: 02E 927 770 AJ Component: GSG DSG AG6 440 1982 Revision: 04844002 Serial number: 00000906161234 Coding: 0000020 Shop #: WSC 44551 111 44551 VCID: 120555150DF9DCD4BE-8046 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: 00000003285402 Coding: E6868F0700041A00470A00000F000000000A59435C000120000000000000 Shop #: WSC 05124 000 00000 VCID: 334BF09152A335DCD5-8066 Subsystem 1 - Part No: 3C2 955 119 B Labels: 1KX-955-119.CLB Component: Wischer 300709 022 0601 Coding: 00046997 Shop #: WSC 05124 Subsystem 2 - Part No: 1K0 955 559 AF Labels: 1K0-955-559-AF.CLB Component: RLS 260809 046 0204 Coding: 00208933 Shop #: WSC 05124 No fault code found. ------------------------------------------------------------------------------- Address 10: Park/Steer Assist (J446) Labels:. 3C8-919-475.clb Part No SW: 3C8 919 475 A HW: 3C8 919 475 Component: PARKHILFE 8K H07 0009 Revision: -------- Serial number: 08740921503229 Coding: 100103 Shop #: WSC 12345 123 61029 VCID: 3245F5956DB93CD4DE-8066 No fault code found. ------------------------------------------------------------------------------- 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: 3C5953507CN Coding: 0001211 Shop #: WSC 05314 000 00000 VCID: 74C9338D172D72E40C-8020 Subsystem 1 - Part No: XXXXXXXXXXX Component: E0221 002 0030 No fault code found. ------------------------------------------------------------------------------- Address 17: Instruments (J285) Labels:| 3C8-920-xxx-17.clb-SRI1 Part No SW: 3C0 920 872 E HW: 3C0 920 872 E Component: KOMBI H02 0206 Serial number: 00000000000000 Coding: 160F00 Shop #: WSC 05314 115 00000 ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04040 ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod VCID: 277314C15E7B497C79-8072 No fault code found. ------------------------------------------------------------------------------- Address 19: CAN Gateway Labels:. 3C0-907-530-V3.clb Part No SW: 3C0 907 530 L HW: 3C0 907 951 Component: J533__Gateway H13 0152 Revision: H13 Serial number: 3300P098270529 Coding: FDA3FF07100202001003 Shop #: WSC 11111 111 45725 VCID: 2A75EDF58569741466-807E 3 Faults Found: 01304 - Radio 004 - No Signal/Communication - Intermittent Freeze Frame: Fault Status: 00100100 Fault Priority: 2 Fault Frequency: 1 Reset counter: 184 Mileage: 94962 km Time Indication: 0 Date: 2012.09.26 Time: 16:41:53 01320 - Control Module for Climatronic (J255) 004 - No Signal/Communication - Intermittent Freeze Frame: Fault Status: 00100100 Fault Priority: 2 Fault Frequency: 1 Reset counter: 184 Mileage: 94962 km Time Indication: 0 Date: 2012.09.26 Time: 16:56:31 01044 - Control Module Incorrectly Coded 000 - - Freeze Frame: Fault Status: 01100000 Fault Priority: 1 Fault Frequency: 1 Reset counter: 144 Mileage: 94967 km Time Indication: 0 Date: 2012.09.27 Time: 00:00:36 ------------------------------------------------------------------------------- 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: 75CF0E891C576BEC3B-8020 Subsystem 1 - Part No: 3C0 905 861 G Component: ELV 027 0380 3C0905861G ELV 027 0380 1 Fault Found: 02823 - Requirements for Locking the Steering Column Lock not met 000 - - - Intermittent Freeze Frame: Fault Status: 00100000 Fault Priority: 7 Fault Frequency: 1 Reset counter: 184 Mileage: 94963 km Time Indication: 0 Date: 2012.09.26 Time: 00:30:28 ------------------------------------------------------------------------------- Address 36: Seat Mem. Drvr Labels: 3C0-959-760.lbl Part No SW: 3C0 959 760 E HW: 3C0 959 760 E Component: Sitzverstellung 1101 Revision: 00005000 Serial number: 00000000000000 Shop #: WSC 00000 000 00000 VCID: 2F43FCE1BE8B113CB1-807A No fault code found. ------------------------------------------------------------------------------- Address 42: Door Elect, Driver Labels:. 1K0-959-701-MAX3.clb Part No SW: 1K0 959 701 AS HW: 1K0 959 793 P Component: J386 TUER-SG FT 1502 Revision: 71009005 Serial number: 00000934398701 Coding: 0005047 Shop #: WSC 05311 000 00000 VCID: 7F23ECA12E6B21BC61-802A No fault code found. ------------------------------------------------------------------------------- Address 44: Steering Assist Labels: 1K0-909-14x-GEN3.clb Part No: 1K0 909 144 H Component: EPS_ZFLS Kl. 143 2901 Revision: 00H17000 Shop #: WSC 02069 000 90108 VCID: 2F43FCE1BE8B113CB1-807A 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: 00910A0001860E76300494157008DFCE105801 Shop #: WSC 05311 000 00000 VCID: 75CF0E891C576BEC3B-8020 Subsystem 1 - Part No: 1K8 951 605 Component: LIN BACKUP HORN H09 9002 Subsystem 2 - Part No: 3C0 951 171 C Component: Neigungssensor 004 0611 Subsystem 3 - Part No: 3C0 951 171 C Component: Innenraumueberw.004 0611 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: BP218198613822 ASAM Dataset: EV_AudioVerst8KanalBNO2 A01003 ROD: EV_AudioVerst8KanalBNO2.rod VCID: 67F354C19EFB897CB9-8032 No fault code found. ------------------------------------------------------------------------------- Address 53: Parking Brake Labels: 5N0-907-801.clb Part No SW: 3C8 907 801 E HW: 3C8 907 801 E Component: J540 EPB3 VW-15417 0007 Revision: 010 Serial number: 00000000006790 Coding: 0000057 Shop #: WSC 05311 000 00000 VCID: 2C79EBED8F9D6A2494-8078 No fault code found. ------------------------------------------------------------------------------- Address 56: Radio Cannot be reached ------------------------------------------------------------------------------- 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 05311 000 00000 VCID: 75CF0E891C576BEC3B-8020 No fault code found. ------------------------------------------------------------------------------- Address 77: Telephone Cannot be reached End-------------------------(Elapsed Time: 01:54)--------------------------Leave a comment:
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Thanks Kamold - I should send you some beers!Originally posted by kamold View Post
Swapping back the old gateway was definitely the way to go. ELV issue gone, and surprisingly communication with the MFD is still as good as it was with the 7N0 gateway, and better than it was with the RCD510 - I can see what's playing, skip tracks, and see who's calling. Win!
Still no parking display - my guess is I still need the newer park assist module to communicate with the head unit, but in reality, I'm just guessing.
I've removed a bunch of thing from the scan like ABS and Door Electrics to fit in the character limit, as I figure they'll make no difference
VCDS scan with the 7N0 Gateway:
Code:Sunday,06,May,2018,15:02:33:38493VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64 VCDS Version: 18.2.0.3 (x64) Data version: 20180212 DS287.0 www.Ross-Tech.com VIN: WVWZZZ3CZAE038764 License Plate: Mileage: 94960km-59005mi Repair Order: -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Chassis Type: 3C-VW46 (7N0) Scan: 01 02 03 08 09 10 15 16 17 19 22 25 36 42 44 46 47 52 53 55 5F 62 65 72 VIN: WVWZZZ3CZAE038764 Mileage: 94960km-59005miles 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 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: OK 0000 47-Sound System -- 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: Malfunction 0010 62-Door, Rear Left -- Status: OK 0000 65-Tire Pressure -- Status: OK 0000 72-Door, Rear Right -- Status: OK 0000 ------------------------------------------------------------------------------- Address 02: Auto Trans Labels: 02E-927-770.clb Part No SW: 02E 300 012 E HW: 02E 927 770 AJ Component: GSG DSG AG6 440 1982 Revision: 04844002 Serial number: 00000906161234 Coding: 0000020 Shop #: WSC 44551 111 44551 VCID: 120555150DF9DCD4BE-8046 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: 00000003285402 Coding: E6868F0700041A00470A00000F000000000A59435C000120000000000000 Shop #: WSC 05124 000 00000 VCID: 334BF09152A335DCD5-8066 Subsystem 1 - Part No: 3C2 955 119 B Labels: 1KX-955-119.CLB Component: Wischer 300709 022 0601 Coding: 00046997 Shop #: WSC 05124 Subsystem 2 - Part No: 1K0 955 559 AF Labels: 1K0-955-559-AF.CLB Component: RLS 260809 046 0204 Coding: 00208933 Shop #: WSC 05124 No fault code found. ------------------------------------------------------------------------------- Address 10: Park/Steer Assist (J446) Labels:. 3C8-919-475.clb Part No SW: 3C8 919 475 A HW: 3C8 919 475 Component: PARKHILFE 8K H07 0009 Revision: -------- Serial number: 08740921503229 Coding: 100101 Shop #: WSC 12345 123 61029 VCID: 3245F5956DB93CD4DE-8066 No fault code found. ------------------------------------------------------------------------------- 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: 3C5953507CN Coding: 0001211 Shop #: WSC 05314 000 00000 VCID: 74C9338D172D72E40C-8020 Subsystem 1 - Part No: XXXXXXXXXXX Component: E0221 002 0030 No fault code found. ------------------------------------------------------------------------------- Address 17: Instruments (J285) Labels:| 3C8-920-xxx-17.clb-SRI1 Part No SW: 3C0 920 872 E HW: 3C0 920 872 E Component: KOMBI H02 0206 Serial number: 00000000000000 Coding: 160F00 Shop #: WSC 05314 115 00000 ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04040 ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod VCID: 277314C15E7B497C79-8072 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: 22041600F12287 Coding: 350003 Shop #: WSC 00046 123 12345 VCID: 7BDB18B1FA733D9C4D-802E 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: 75CF0E891C576BEC3B-8020 Subsystem 1 - Part No: 3C0 905 861 G Component: ELV 027 0380 3C0905861G ELV 027 0380 1 Fault Found: 02823 - Requirements for Locking the Steering Column Lock not met 000 - - Freeze Frame: Fault Status: 01100000 Fault Priority: 7 Fault Frequency: 1 Reset counter: 0 Mileage: 94963 km Time Indication: 0 Date: 2012.09.26 Time: 00:30:28 ------------------------------------------------------------------------------- Address 44: Steering Assist Labels: 1K0-909-14x-GEN3.clb Part No: 1K0 909 144 H Component: EPS_ZFLS Kl. 143 2901 Revision: 00H17000 Shop #: WSC 02069 000 90108 VCID: 2F43FCE1BE8B113CB1-807A 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: 00910A0001860E76300494157008DFCE105801 Shop #: WSC 05311 000 00000 VCID: 75CF0E891C576BEC3B-8020 Subsystem 1 - Part No: 1K8 951 605 Component: LIN BACKUP HORN H09 9002 Subsystem 2 - Part No: 3C0 951 171 C Component: Neigungssensor 004 0611 Subsystem 3 - Part No: 3C0 951 171 C Component: Innenraumueberw.004 0611 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: BP218198613822 ASAM Dataset: EV_AudioVerst8KanalBNO2 A01003 ROD: EV_AudioVerst8KanalBNO2.rod VCID: 67F354C19EFB897CB9-8032 No fault code found. ------------------------------------------------------------------------------- Address 53: Parking Brake Labels: 5N0-907-801.clb Part No SW: 3C8 907 801 E HW: 3C8 907 801 E Component: J540 EPB3 VW-15417 0007 Revision: 010 Serial number: 00000000006790 Coding: 0000057 Shop #: WSC 05311 000 00000 VCID: 2C79EBED8F9D6A2494-8078 No fault code found. ------------------------------------------------------------------------------- Address 5F: Information Electr. (J794) Labels:| 5G0-035-MIB-STD2.clb Part No SW: 5K7 035 200 D HW: 5K7 035 200 D Component: MU-S--ER H22 0245 Serial number: VWZAZ2R8010691 Coding: 028401000000000011110003001828001F0100C60020010002 Shop #: WSC 01357 011 00200 ASAM Dataset: EV_MUStd4CTSAT 001022 ROD: EV_MUStd4CTSAT_VW27.rod VCID: 256F1EC924775B6C4B-8070 1 Fault Found: 1564 - Microphone 1 B129B 13 [009] - Open Circuit Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 4 Fault Frequency: 1 Reset counter: 1 Mileage: 94964 km Date: 2018.05.06 Time: 21:24:57 Voltage terminal 30: 11.6 V End-------------------------(Elapsed Time: 01:58)--------------------------Leave a comment:
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Sorry I'd forgotten about the ELV as I'd already upgraded my CCM previously.
Yes you need to clone your immo data to a new B7 CCM and modify the wiring to resolve it fully.
If you put the 3c0 gateway back in you won't be able to access the composition media unit via diagnostics, however if you leave radio at address 56 enabled, I think you should still be able to control the volume etc from the steering wheel...one way to find out...
Can you post a full autoscan so that I can see the full parts list and coding then I can look at the PDC issue.
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