Good evening, my car Audi A4 2009 convertible 2.0 tdi automatic, left parked for a couple a weeks, yesterday when i attempted to start the car , no joy ! Initially i thought the battery is low, left it to charge for about an hour, also added some diesel as it was low! Still not starting, i plugged my VCDS and no communication with ECU, but i was able to connect to other modules, and some of them are showing: 01314 Engine control module- no communication! Any advices will be appreciated!