When using Q7, simply drop the fob on the sign and push the Start/Stop button while simultaneously depressing the brake pedal. You can also touch the tip or the back of the fob to the symbol. In the 2018 Audi A5 and Q5, the mark is now located in the cup holder on the driver’s side.
An Audi key fob’s battery can be found where?
Replace Audi Remote Battery Using a little screwdriver, press the key’s back cover. At the fob’s end, lift the back cover. The battery should be inside if the back cover is removed. Remember the orientation before removing the battery.