What is the reason for the Passat's auto hold not responding?

[VanCali]

Passat's auto hold not responding is due to the lever not being fixed, parking brake failure, aging parking brake, excessive gap between the auto hold system's friction plate and brake drum, or severe wear of the parking brake pin shaft. Below are detailed explanations and solutions: Lever not being fixed: The parking brake lever cannot be fixed and needs to be replaced or reinstalled. Parking brake failure: It is necessary to inspect and replace components such as the brake pads. Aging parking brake: The parking brake makes abnormal noises or has aged; lubricant needs to be added or the brake needs to be replaced. Excessive gap between the friction plate and brake drum: Oil contamination or severe wear on the friction plate and brake drum, exposed rivets, or surface hardening causing slippage and malfunction; replace the brake pads and brake disc. How to use the auto hold function: When the driver has fastened the seat belt and the driver's side door is closed, with the engine running, press the auto hold switch to change the auto hold function from off to standby mode. When the brake pedal is pressed to a certain depth and the vehicle has completely stopped, the auto hold function changes from standby to parking mode. When the auto hold is in parking mode, after selecting the appropriate forward or reverse gear, pressing the accelerator pedal will cause the auto hold to release automatically based on the slope gradient.

[NicoleAnn]

I've experienced unresponsive auto-hold in my Passat, which is quite annoying. The most common issue is sensors covered by dust or mud – a car wash or wiping them clean yourself might solve it. Another frequent cause is improper system activation, like forgetting to press the in-car button or parking in a position the system can't recognize. Software glitches can also interfere; sometimes restarting the engine helps, otherwise a dealership system update is needed. Also check if the control module is malfunctioning, which is more likely in older vehicles. Bottom line: don't force it, manual parking is safer. Regular sensor cleaning prevents major repairs.

[LeMiguel]

I've seen many Passats with this issue at the repair shop. Automatic parking failure is usually caused by hardware or electronic faults. The most common reason is sensors blocked by debris, which can be fixed by cleaning. However, deeper issues like short circuits in the control circuit or module aging require professional diagnosis. Software bugs can be corrected by restarting or updating the program. If the system doesn't respond, check the button status and ensure the surrounding environment complies with regulations. Remember to address the issue promptly to prevent safety risks. During maintenance, also inspect the headlights and electrical systems to keep the car in good condition.

[Sue]

If your Passat's auto-hold isn't responding, you must prioritize safety. Sensor failure could lead to loss of control, so pull over immediately for inspection. Common causes include unstable battery voltage, inactive system, incorrect button operation, or insufficient cleaning. Missing software updates can also cause this issue - seek timely repairs to prevent escalation. For prevention, maintain vehicle cleanliness and perform regular electrical component maintenance.