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.
Test And Assembly Work On Power-Assisted Steering: General
Damage to power-assisted steering results from lack of oil in the hydraulic system. Because of the high oil pressure in the hydraulic circuit, even small leaks can cause loss of fluid and damage the servo pump.
Grinding noises when the steering is on lock or the formation of foam in the reservoir indicates lack of oil and/or the sucking in of air. Before filling the reservoir, any existing leaks must be eliminated on the suction side. Alternatively, the defective part on the pressure side should be replaced.
Only Pentosin CHF 11 S may be filled into the reservoir. Pentosin CHF 11 S can be ordered with the following part number: Quantity supplied 1 liter = 000.043.203.33.
Use the Manual With the Right Hardware
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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.