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Post by roidster on Feb 14, 2023 11:42:14 GMT
Hi
I have bought the genuine towbar and wiring kit from Audi. I assume that I will need to make some changes via long coding (or ideally via a 100 credit app)
Does anyone know what needs changing?
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Post by dv52 (Australia) on Feb 25, 2023 22:28:12 GMT
roidster : Hi - and an excellent question!! I'm not sure about the specifics of a Q2 but the general coding task after retrofitting a GENUINE (emphasis on true, OEM) trailer module on this car should be the same as any other MQB platform vehicle. So and not surprisingly, the trailer function interacts with the other modules which will/may be already installed in the car. These are the other modules that will need coding changes: - Engine module @ address hex01
- Brake module @ address hex03
- central electrics module @ address hex09
- Adaptive Cruise Control module @ address hex13 (front radar - if fitted)
- Parking Assistant module @ address hex76
- Driver Assistance module @ address hex A5 (front facing camera - if fitted)
In addition and after the actual trailer module has been CORRECTLY installed (meaning, wired into the car's factory loom in accordance with the manufacturer's instructions), the new module must be registered in the Gateway Installation list (GIL).
Adding the new module to the GIL authorizes it to participate in communications on the car's CAN network. OBD11 calls the new module "Trailer Control" and it lives @ address hex69.
There are a couple of ways that the GIL change can be completed - as follows: Note: this procedure should be completed first
- Automated method - enable Autocode in the OBD11 software (search this forum for how to do this)
- Manual method - do this:
On the last screenshot, place tick next to (69) Trailer Control entry
And of course, the new Trailer Control module itself will need to be coded to suit the way that this car was factory built (and the country of sale). This task is completed by setting the software switches in the module's long-code string. I can't be precise about this aspect of coding because I don't know how this particular car was built, or the country!
After the hex69 module is registered on the GIL and following its long-code changes (as above), the general coding modifications to the other peripheral modules are as follows: - hex01: Long coding - Byte 5, Bit 4 =1 ("Trailer installed")
- hex03: Adaptation - "Vehicle and trailer stabilization" > active
- hex09:
- If the central electrics module has a long-code string - Byte 1, Bit 1 = 1 (Trailer Connect Unit)
- If the central electrics module does NOT have an active long-code string - Adaptation - "Networking-Anhaengeranschlussgeraet" > installed
- hex10: Long coding - Byte 3, Bit 0 =0 & Byte 3, Bit 1 = 1 (Trailer Hitch installed - manually removable)"
- hex13: Long coding - Byte 3, Bit 3 =1 (Control_module_for towing_sensor)
- hexA5: Long coding -
- Byte 11, Bit 0 =1 (AAG_coded)
- Byte 14, Bit 5 =1 (Point_of_intervention_late - setting via menu)
Following these changes, clear any faults that may have been generated as a result of the retrofit project
Don
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Post by roidster on Apr 7, 2023 20:27:19 GMT
Thanks for you brilliantly detailed answer. I had got it working but had missed a few so have now done those too.
Many thanks
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