What Causes the ABS Pump Noise During Passat Lingyu Startup?

[AubreyDella]

Passat Lingyu startup ABS pump noise may be caused by insufficient or damaged power steering pump fluid, ABS pump self-checking, or internal control short circuit in the ABS pump. Insufficient or damaged power steering pump fluid: When the power steering pump lacks fluid or is damaged, it can cause abnormal noise in the ABS pump during vehicle startup. It is recommended to check whether the power steering fluid is insufficient. If it is insufficient, replenish it; if not, it indicates that the power steering pump is damaged and needs to be repaired or replaced at a 4S shop. ABS pump self-checking: Every time the vehicle starts after the power is turned on, the ABS pump will operate to build system pressure and perform a self-check. The operating sound of the ABS pump at this time is a normal phenomenon. Internal control short circuit in the ABS pump: If the ABS pump keeps making noise, it may be due to an internal control short circuit. In this case, it is necessary to go to a 4S shop or a professional repair shop for maintenance.