Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Electro Hydraulic Power Steering
The power steering system is electro hydraulic and governed by the electrical power steering module (EPS). The control module regulates the power steering assistance based on input signals. This allows it to provide optimal steering assistance, irrespective of whether the vehicle is stationary with the engine running or is being driven at high speed. The functions managed by the electrical power steering module (EPS) are active when the engine is running.
The control module is under the right-hand headlamp. The control module and pump motor make up a single replaceable unit.
The electrical power steering module (EPS) is powered by the battery (30 supply) via a fuse in the integrated relay/fusebox in the engine compartment. The electrical power steering module (EPS) receives a 15 supply via the ignition switch and is unfused in the integrated relay/fusebox in the engine compartment and in the central electronic module (CEM). The electrical power steering module (EPS) is grounded in the left-hand suspension turret via a ground lead.
The electrical power steering module (EPS) communicates with other control modules using controller area network (CAN) communication.
If replacing the electrical power steering module (EPS), software optimized for the profile of the car must be downloaded into the control module. If this is not done, although the power steering will function, it will not be optimized to the profile of the car.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.