Mercedes-Benz SLC43 AMG Proportioning / Combination Valve Replacement at your home or office.

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Proportioning / Combination Valve Replacement Service

How much does a Proportioning / Combination Valve Replacement cost?

On average, the cost for a Mercedes-Benz SLC43 AMG Proportioning / Combination Valve Replacement is $397 with $302 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2018 Mercedes-Benz SLC43 AMGV6-3.0L TurboService typeProportioning / Combination Valve ReplacementEstimate$764.39Shop/Dealer Price$929.24 - $1392.29
2017 Mercedes-Benz SLC43 AMGV6-3.0L TurboService typeProportioning / Combination Valve ReplacementEstimate$698.39Shop/Dealer Price$859.26 - $1319.32
Show example Mercedes-Benz SLC43 AMG Proportioning / Combination Valve Replacement prices

What is the Proportioning / Combination Valve all about?

Your braking system relies on hydraulic pressure to operate. When you depress the brake pedal, brake fluid is pushed through the system to the wheels. Fluid pressure is responsible for actuating both disc brake calipers, as well as drum brakes. However, there are numerous components in line between the brake pedal and the brakes themselves, including the combination valve.

The combination valve is responsible for metering fluid to disc brakes, as well as fulfilling tasks done by both the pressure differential switch and proportioning valve (which is responsible for reducing the fluid pressure in the lines leading to the rear drum brakes). This is necessary because of how brakes work in terms of lockup – the more weight there is on a wheel, the more force can be applied without locking up the brakes. In rear drum brakes, the weight on the wheel is comparatively small (the weight of the engine on the front wheels is considerable).

Keep in mind:

  • In modern cars that employ combination valves, replacing the entire valve body is necessary if the proportioning valve fails.
  • There is no way to check operation on this type of valve unless it has failed completely.
  • The valve may have failed due to many reasons, including debris in the brake fluid.

How it's done:

  • The defective proportioning combination valve brake lines are disconnected
  • The defective proportioning combination valve is removed from the vehicle
  • The new proportioning combination valve is installed and the brake lines are connected to valve
  • The brake system is bled and purged of air in the system and the brake fluid is refilled
  • The vehicle is road tested for proper brake operation

Our recommendation:

Follow your automaker’s recommendations on brake system service to ensure that the fluid remains in good condition and free of debris. Have your braking system maintained by our expert mechanics to ensure that any potential problems are caught as soon as possible. Driving with a failing proportioning valve puts you at increased risk.

What common symptoms indicate you may need to replace the Proportioning / Combination Valve?

  • Rear brakes lock up easily, particularly on wet pavement

How important is this service?

While it is still possible to drive with a failed or failing proportioning valve, it’s not recommended because it decreases your safety while increasing the risk of being involved in an accident because your rear brakes lock up under even light loads. Have the entire combination valve assembly replaced immediately.

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Chris

22 years of experience
2266 reviews
Chris
22 years of experience
Mercedes-Benz ML320 V6-3.2L - Water Pump Replacement - Dana Point, California
thanks chris outstanding job

David

16 years of experience
637 reviews
David
16 years of experience
Mercedes-Benz 300D L5-2.5L Turbo Diesel - Serpentine/Drive Belt - Sacramento, California
David is an extremely knowledgeable, professional, competent and courteous mechanic, as well as just being a nice guy in general. Very, very impressed!

Mark

25 years of experience
55 reviews
Mark
25 years of experience
Mercedes-Benz C300 V6-3.0L - Door Lock Actuator Replacement (Driver Side Front) - Phoenix, Arizona
Mark showed up on time. He was able to remove and replace the actuator with minimal issues. I think this was the first time he's worked on this type of repair on my mode car. He did not have all the tools he needed. I needed to supply a drill and go buy a rivet gun in order to keep the job on schedule. While I appreciated the luxury of not having to take my car somewhere, I didn't appreciate having to buy additional tools to get the job completed that day. I will use Mark again. however, next time I will do my due diligence to find out what tools are needed and check to make sure they are available before beginning.

Tyrone

19 years of experience
105 reviews
Tyrone
19 years of experience
Mercedes-Benz SL500 V8-5.0L - Other Inspections - Houston, Texas
Tyrone was very experienced and I would use him on any of my work in the future.He knew exactly what to look for,was thorough in his search and did over and above what I expected...

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Rating Summary
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5,332
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