Powerto the rear fuse panels is not affected by Battery interrupt igniter N253 in this wiring diagram: The black cable on the lower right of your picture feeds Battery jump start terminal U6 in the engine compartment. Fuse 1 is the link closest to the starter battery that feeds the red cables; one of those red cables should go to Fuse Panel F 408925Location Phoenix AZ My Photo Gallery: 0 MMI display and buttons are not working Guest-only advertisement. Register or Log In now! Hi! I'll do my very AudiA7 2017 3.0TDI 272PS Quattro Black Edition (UK Version) Short Summary: When turning ignition on through start button on side of gear stick, the MMI screen does not open. The MMI buttons in the middle, i.e. Menu, Back, Car, Nav, Radio, Tel, Media, Volume, Next/Previous track button, MMI scribble => nothing lights up Therear washer jet gets blocked due to the weather and road conditions. If the front washers are working then I would clean out the rear washers with a pin, make sure the washer bottle is full and try it out again. I use 50% washer fluid/50% water to stop the fluid freezing. Q3 2020 Model, 45TFSI Edition 1, 230PS S-tronic, Mythos Black, Nappa Factoryfitted AUX input not working. Thread starter infernox; Start date Jan 29, 2014; Forums. then do a reset by holding radio & setup button until the screen goes dark & unit power resets, this can take 30 seconds sometimes. DIY: Concert 3 to RNS-E Retrofit - 2012 Audi A3 - Audi Forum - Audi Forums for the A4, S4, TT, A3, A6 Step3 – Check the heater core. It might be clogged. The heater core is responsible for taking coolant from hoses that pass through it and directing it into the cabin of the vehicle. Sometimes, the hoses from the core become clogged with debris. In order to get the heat working again, you will have to flush the system. Dundee Scotland. Dec 28, 2018. #1. Looking for general advice. Have an Audi A3 8VA 2014. Suddenly my rear window heater has totally stopped working. The light on the control button will light for a few seconds and then will switch straight back off again. Tried to check if it would possibly be a fuse that had gone but read online this fuse yuyueyuyue Make sure you have a working battery, Then disconnect the negative terminal under driver's seat for a minutes, then make sure the sunroof **** is pointed at 'off' setting, then reconnect the battery. Then test sunroof. Hold the **** to the max open setting until the sunroof reaches that point. Then close it. Basedon the information you have provided this sounds like the common issue with the MMI software itself. Audi has recognized a software concern that creates the blank screen either all of the time or intermittently. The correction is to allow an Audi dealer to update the software for the MMI system to resolve this issue. Itis awkward to start the car at night and only have the needles lit up. I double checked with Vag-Com and my code was already set to 31300. 17-Instruments: Mode 0: Nothing lit until ext. light on. Mode 1: Pointers lit all the time. Mode 2: Scales lit all the time. Mode 3: Pointers and Scales lit all the time. Qf2B.