OK it started shutting off on me when it would rain hard but drove fine after. Then wouldn't start at all fuel pump wouldn't go on so I changed fuel pump and relay, just changed Ignition Switch one wire fried up the I.S. fixed that. Fuel pump started working but doesn't seem to stop running when key is turned on, if that has anything to do with it. Also it won't start unless the check engine light is on and won't read the computer it says no link. What else lol oh abs light was flickering today and just order a crank positioning sensor waiting on that. PLEASE ANY HELP WOULD BE MUCH APPRECIATED!!! Audi's love them when there running right but they sure do make you earn it lol

 

Hi sounds like you have an ecu pulling the Canbus system down. Try unplugging the ABS ecu connector and then start it. Canbus is the 2wire communication databus that connects the control modules, allowing them to exchange data.

 

I meant to add, if it then starts you need to replace the ABS unit.