Mercedes-Benz Power Steering Reservoir Leak Fix

A common problem that Mercedes-Benz owners face is a power steering leak. While power steering fluid leaks can happen for several reasons, one of the most common issues is that the rubber O-ring that connects the power steering fluid reservoir to the power steering pump becomes brittle over time.

In this guide, you will find instructions on removing a Mercedes Benz power steering reservoir and replacing the O-ring. This guide can also be used as a reference if you need to remove or replace the power steering reservoir.

What you will need

Parts

Replacement Mercedes Benz power steering reservoir
O-ring for Mercedes Benz power steering reservoir

Tools

Pick Tool
L-type Torx 30 screwdriver
Plier
Fluid Transfer Pump

Procedure

Park the vehicle on a level surface. Put the transmission in the Park position.
Allow the engine to cool down.
Pull the hood release under the dashboard to release the hood. Pop the hood open.
Remove the engine cover by pulling it up and then towards the front of the vehicle.
Remove the air intake hose on the driver’s side.
Remove the reservoir cap by turning it counterclockwise.
Place an oil pan under the car, then drain the reservoir using a fluid transfer pump.
Using Torx 30 (T-30), remove three(3) reservoir bolts; you may use a plier or a small pipe to add some leverage in turning the screws.
Using a pick tool, pull the locking C-clip from the back of the reservoir. Be careful not to drop the C-clip.
Pull the reservoir towards the front of the vehicle, then tilt it down after it comes off to minimize the power steering fluid leak.
Replace the O-ring on the power steering inlet tube.
Remove the clamp for the return hose. You can use a flathead screwdriver to pry off the clamp. Once the clamp is loose, the hose can be pulled back. Replace the clamp.
Reinstall in reverse order. Do not forget to install a new O-ring and clamp to return the power steering hose fluid. Reinstall the C-clip.

Frequently Asked Questions

Can you replace a power steering reservoir at home?

Yes.

What is a power steering reservoir?

The power steering fluid reservoir holds the fluid that powers the steering system in your vehicle.

What happens if a power steering reservoir leaks?

If the power steering reservoir leaks, there is a risk of a complete loss of power steering fluid. The steering pump will make a groaning noise, and the steering wheel will be hard to turn.

What happens if the power steering fluid completely drains while driving?

If the power steering fluid completely drains while driving, the steering wheel will be tough to turn.

Do all cars have a power steering reservoir?

If the power steering fluid completely drains while driving, the steering wheel will be tough to turn.

We hope you find the Mercedes-Benz Power Steering Reservoir Leak Fix guide helpful. Check these troubleshooting and repair guides for more help on your Mercedes-Benz.