What to know about the Power Steering Pressure Switch:
Power steering makes steering a vehicle much easier at low speeds. However, because the system is driven by the engine, increased loads can cause problems. The harder the power steering system must work to meet the demands of the driver, the heavier the load is placed on the engine.
The power steering pressure button is found either at the power steering pump or the gearbox. It’s an on/off type of button that communicates with the vehicle’s computer by sending information about the fluid pressure in the system, and if necessary, the computer adjusts the engine’s operation to account for increased demand. In some systems, the button is also tied into the vehicle’s air conditioning and will turn off the compressor at certain load points (or communicate with the ECM to turn off the compressor). The button uses a diaphragm, as well as two electrical sensors. Over time and through exposure to heat, the sensor can malfunction or fail.
Facts to Note:
The power steering pressure switch is not part of any regular maintenance.
The power steering pressure switch cannot be examined without significant teardown.
Failure of the power steering pressure button can mimic a number of other problems with the system, so it’s vital that one of your expert mechanics diagnose the problem.
How to Fix:
The hood is opened and the engine is allowed to cool then drained of fluid
The power steering pressure switch is detached from the pressure line
The new power steering pressure switch is fixed into the pressure line
The power steering system is fill up with fluid and purged of air
The engine is run and the power steering system operation is checked
The power steering system of your vehicle makes handling at low speeds much easier. It’s an essential part of your vehicle, and if you’ve noticed that it isn’t functioning correctly, we recommend having one of your expert mechanics diagnose it.
Common symptoms indicating you may need to change the Power Steering Pressure Switch:
Lack of power steering assist
Engine stutters under heavy steering load
Importance of this service:
While it’s not as critical as your drivetrain, the power steering system does offer vital usability enhancements. We vouch for having any malfunction diagnosed as soon as conceivable by one of your expert mechanics. Note that problems with the pressure switch can be similar to numerous other issues, so self-diagnosing the failure is not suggested.