What causes the alarm to keep sounding after locking an Audi A4?

[StMicah]

Audi A4 car alarm keeps sounding after locking: The anti-theft alarm sensitivity is too high. There is a sensitivity adjustment knob on the vibration sensor of the anti-theft alarm, which can be fine-tuned; The door grounding wire is faulty, commonly known as the door switch failure. The alarm adjustment box is usually located under the dashboard, with adjustment knobs that can be tweaked by yourself. Alternatively, you can seek help from the professional who installed the alarm. Precautions for locking the car: Using a mechanical key is safer than using a smart key, as it avoids interference from signal jammers. When using a mechanical lock, ensure the doors are properly closed and listen for the sound of all doors locking to confirm the car is securely locked. Check if the lights flash after locking. If using an electronic lock, observe whether the car is properly locked by checking if the lights flash or if the side mirrors automatically fold. If any abnormality is noticed, promptly check for signal interference sources nearby. Pull the door handle to confirm locking. After locking, it's advisable to habitually pull the door handles to ensure the doors are locked. Be gentle when pulling to avoid damaging the door switch mechanism.