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Volkswagen B harness #1296

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jyoung8607 opened this issue Aug 26, 2024 · 2 comments
Open
1 of 5 tasks

Volkswagen B harness #1296

jyoung8607 opened this issue Aug 26, 2024 · 2 comments
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car related to opendbc/car/ volkswagen

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@jyoung8607
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jyoung8607 commented Aug 26, 2024

New Harness Checklist

  • which car is this for? Volkswagen in general newer than MY2022, including MQBevo (but not MEB)
  • schematic - Push to neo repo once confirmed working
  • beta sent to tester
  • in shop
  • Added to openpilot docs

Additional Info

This harness is intended to work for newer MQB with the 2Q0 camera, and also MQBevo with the 5WA camera. The wiring between the two types isn't the same, but for our purposes, they are compatible enough to combine.

The official male connector housing is 8W0 972 112 A (example source). It's pricey.

The female connector housing has not been found on the market. @vanillagorillaa went so far as to purchase and disassemble the camera, and the PCB mount housing had no identifying markings. For the female connector, @lukasloetkolben has a 3D printable model of the female connector housing.

@1okko has correctly identified TE part numbers for both sides below, and there are sellers on Taobao.

While comma production is pending, a limited number of prototype kits are available directly from Lukas.

Harness Wire Mappings

Terminal MQB 2Q0 (New, Tan) MQBevo (Tan) Harness Mapping
1 Extended CAN High ADAS CAN High CAN 0/2 High
2 Extended CAN Low ADAS CAN Low CAN 0/2 Low
3 Fusion CAN High   CAN 1 High
4 Fusion CAN Low   CAN 1 Low
5 Camera heater supply Camera heater supply Passthrough
6 Camera heater ground Camera heater ground Passthrough
7 Ground Ground Ground
8 Switched 12V Switched 12V Switched 12V
9      
10      
11   Fusion Ethernet High Passthrough
12   Fusion Ethernet Low Passthrough

Source Documentation

Camera WD - MQB 2Q0 (New).pdf

Camera WD - MQBevo.pdf

@jyoung8607 jyoung8607 added car related to opendbc/car/ volkswagen labels Aug 26, 2024
@1okko
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1okko commented Sep 9, 2024

c9ace060f9016f18bd6bd2843c2cb0a
fcf444adb67b3cdc7d6cbafc3fe804f
The male connector:TE 2322637-2 http://e.tb.cn/h.gpqxt6p8I26uTIr?tk=fQDq36K5sEK
The female connector:TE 2322610-2 http://e.tb.cn/h.gK4Mh7kXVVQoDdR?tk=W98s36K5Gf8

@jyoung8607 jyoung8607 transferred this issue from commaai/openpilot Sep 27, 2024
@jyoung8607
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Some notes about more fallout from #1272:

  • 2024 Volkswagen Taos also split, also on February 19, discovered from an end user. Don't need to revoke support because MY2024 was never officially added.
  • 2024 Volkswagen Tiguan also split, also on February 19
  • 2024 Volkswagen Arteon also split, on March 4, but looks like there might have been an actual gap in production
  • Volkswagen Atlas and Golf had already refreshed to MQBevo with CAN-FD, along with Audi A3

In short, we don't have a harness for any current production USA market cars. We need the VW B harness pretty badly.

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