What's the reason for the auto hold malfunction causing failure to start?
2 Answers
The reasons for the auto hold malfunction preventing the car from starting are the auto hold button being stuck or the ABS pump being damaged. Below are the detailed explanations: Auto hold button stuck: The auto hold button is stuck, preventing the auto hold function from being released. Solution: Check for any foreign objects; if none are found, reset the electronic parking brake. Turn on the car key, press down on the foot brake, then hold down the electronic parking brake for 5 seconds, followed by pulling up the electronic parking brake for 5 seconds. This will initialize and reset the electronic parking brake. ABS pump damage: Damage to the ABS pump prevents the car from starting. Solution: Replace the ABS pump with a new one.
I've been driving for over a decade and have encountered automatic parking brake failures preventing engine start multiple times. The most common issue stems from low battery voltage, as the automatic parking system requires stable power supply to properly release the brake lock. If the battery is aged or insufficiently charged, the system may misjudge the status and block engine starting. It could also be a control unit malfunction - those electronic modules are prone to moisture damage or software bugs, causing signal confusion. Once after rainy weather, my car wouldn't start, and the dealership found water-induced short circuits in the control unit. Wiring problems are also frequent, such as corroded or loose connection points interrupting current flow. For temporary solutions, try turning off all electrical devices and waiting a few minutes before retrying, but long-term fixes require battery replacement or professional repair. Remember, never force-start the engine to avoid damaging other components - safety always comes first.
