Why does the Audi A5's screen remain on and play music after turning off the engine?

1 Answers
GrahamMarie
07/29/25 9:16pm
Audi A5's screen remaining on and playing music after turning off the engine may be due to reasons such as a short circuit in the wiring or issues with aftermarket wiring. The specific explanations are as follows: Short circuit in the wiring: If the screen stays on after turning off the engine, you will need to use a car diagnostic tool to enter the SMK system and read the data stream. If the data streams "ACC" and "ACC input circuit and battery circuit (with the engine off)" are both in the ON state, it indicates that there is currently a short circuit. The cause of the short circuit is likely a problem with the power supply module, and it is necessary to promptly inspect and repair the relay. Issues with aftermarket wiring: If you have previously installed an audio amplifier yourself, the issue may be due to problems with the aftermarket wiring (such as using a constant power line to supply the amplifier), leading to abnormal power supply. In this case, simply troubleshooting the corresponding wiring should resolve the issue.
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