Themost common causes for flickering dashboard lights and no engine crank in Audi A4 are weak battery, corrosion on battery terminals, and bad ground connection. 1. Weak battery. The leading cause of flickering dashboard lights and no start in Audi A4 is weak battery. You may also hear rapid clicking noise when you try to start the engine.
Yourdiagnosis was dead-on, thank you. I called CAA to purchase a new battery; the came and told me they don’t sell batteries for Audis. ( A waste!) So I had them jump-start it, then called them to complain so they deleted the service call (you’re allowed three free calls per year with membership and $45.00 per call after that.
Thebattery of my Audi Q7 died being in vacation for 5 weeks and the car not being started during that time. I have got a jump and my car started,than replaced the battery,but my MMI interface stopped working,was not even turning on. After i have tried several things the only way that i was able to figure out what was the problem was using Hellothere guys today i will be showing you guys how to change the Audi A4 B9 Battery, i hope this video helps you guys out, i wanted to find out if i would