Modern anti-lock braking systems are highly dependable, and offer safer stopping in certain driving situations. They’re also very composite systems that rely on a network of sensors, switches, and other parts in order to function. The ABS system actually spans most of your vehicle, although much of it is found under the hood, centered on the master cylinder. In an anti-lock brake setup, pressurized fluid must be stored in order to provide a power assist to brakes during ABS pulsing. The fluid is pumped into and held in the accumulator, and the anti-lock pressure switch is in control of turning the pump on and off.
In essence, the anti-lock pressure switch is an on/off switch for the ABS pump. Once the fluid in the accumulator is low, the switch turns on the pump. The pump runs until the accumulator is full, and then the switch turns it off. On the other hand, over time, the switch can wear and failure is a possibility. When this happens, the pump will not work, or it could burn itself out in some circumstances.
Facts to Note:
The anti-lock pressure switch is not examined during routine upkeep, and will only be checked if there’s an ABS problem.
If the anti-lock pressure switch fails, the ABS system will not function.
A failed pressure switch will turn on the ABS light on your dash, and set a brake system code in the computer.
How to Fix:
The anti-lock pressure switch is confirmed to see if it needs to be replaced
The faulty anti-lock pressure switch is detached
The new anti-lock pressure switch is fixed
The anti-lock pressure switch is tested for operation
The vehicle is tested to ensure proper operation of the anti-lock pressure switch
The anti-lock pressure switch is a small but vital part for the entire ABS system. If it spoils, the system won’t work, although you’ll still have normal braking capabilities but not the ABS. Have any brake system problem analyzed by one of your expert mechanics as many different problems can set a code in the computer and turn on the ABS light on the dash.
Common symptoms indicating you may need to change the Anti-Lock Pressure Switch:
ABS light is on in dash with brake system code set in computer
ABS system does not operate
ABS pump will not stop running
Importance of this service:
Without a functional anti-lock pressure switch, the ABS pump cannot work properly, and the system as a whole will shut down. Damage to the pump is possible in some instances. If you have an ABS light on in your dash or have noticed any other abnormal operation, have it analyzed and changed by one of your expert mechanics straightaway.