Checked around before posting and I couldn't find anything so I apologize if this is a repost.
I have a 2008 S5 6 speed. When I use my "Engine Start" button, I get a chime and a warning indicator on the instrument cluster that says "Advance Key Defective. Use Ignition Lock". The doors lock and unlock, and trunk release features on the key work properly, no issues there at all. The car operates normally when using the key in the ignition lock but obviously I'm concerned, so I called my local Audi dealer. The service advisor instructed me to replace the battery in the key fob because if the battery is not producing at least 3.0 volts, the Engine Start button feature will not work. He said the system can be deceiving because the door locks and trunk release features WILL operate normally even if the battery voltage is low but the battery still may not have enough voltage for the key fob to produce the frequency for the Engine Start button to work. I replaced the battery as instructed, and I'm still having the exact same issue. Door lock and unlock and trunk release features operate normally, but the Engine Start feature is totally inoperative. :wall: Any insight would be greatly appreciated. Thanks guys!
I have a 2008 S5 6 speed. When I use my "Engine Start" button, I get a chime and a warning indicator on the instrument cluster that says "Advance Key Defective. Use Ignition Lock". The doors lock and unlock, and trunk release features on the key work properly, no issues there at all. The car operates normally when using the key in the ignition lock but obviously I'm concerned, so I called my local Audi dealer. The service advisor instructed me to replace the battery in the key fob because if the battery is not producing at least 3.0 volts, the Engine Start button feature will not work. He said the system can be deceiving because the door locks and trunk release features WILL operate normally even if the battery voltage is low but the battery still may not have enough voltage for the key fob to produce the frequency for the Engine Start button to work. I replaced the battery as instructed, and I'm still having the exact same issue. Door lock and unlock and trunk release features operate normally, but the Engine Start feature is totally inoperative. :wall: Any insight would be greatly appreciated. Thanks guys!
