1. Use ACC mode: After the car is turned off, turn the key to ACC mode (Accessory), which will keep the power supply to the multimedia system so that you can continue to listen to music. Please note that this will drain the vehicle's battery, so be careful to monitor battery power and avoid over-discharging.

2. Use the power adapter or battery life: You can use the car power adapter or battery life to connect the multimedia system to provide power and continue playing music. This requires an external power supply and ensures charging as needed.

3. Use Bluetooth speakers or wireless headphones: If Tiguan L is equipped with Bluetooth function, you can connect your mobile phone or other Bluetooth devices to the car audio system or car Bluetooth to play music through Bluetooth. You can also use wireless headphones to continue enjoying your music.