
Originally Posted by
rt11
Woo I got my unit now. And it works, kinda. Screen comes on, I can navigate with MMI buttons, etc., and the Audi menu comes up too.
But the car won't start. :( I get a bunch of faults with I turn on the ignition: parking brake, ESC, tyre pressure etc., and the engine stops after a second or so.
If I remove the CAN connector the car works fine, so I'm guessing it's a CANBUS problem. But how would I troubleshoot it?
I just read this and I think your canbus bypass is physically disconnected. get a multimeter and check the bypass if every wire is alive and sounds good.
It's not supposed to prevent your car starting at all. all your symptom seems there is some open circuit in various canbus lines, such as driving system canbus.
FYI, we don't touch driving system CANBUS at all. we only tab on Convenience(climate) canbus as well as some auxiliary CAN and LINBUS.
All your symptom sounds like driving system CANBUS is disrupted somehow. check for any bent pins.
Bookmarks