BMW 525i Proportioning / Combination Valve Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(192)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(192)

Proportioning / Combination Valve Replacement Service

How much does a Proportioning / Combination Valve Replacement cost?

On average, the cost for a BMW 525i Proportioning / Combination Valve Replacement is $518 with $361 for parts and $157 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2007 BMW 525iL6-3.0LService typeProportioning / Combination Valve ReplacementEstimate$908.51Shop/Dealer Price$1110.81 - $1668.12
2005 BMW 525iL6-2.5LService typeProportioning / Combination Valve ReplacementEstimate$878.51Shop/Dealer Price$1080.86 - $1638.20
1989 BMW 525iL6-2.5LService typeProportioning / Combination Valve ReplacementEstimate$878.51Shop/Dealer Price$1080.86 - $1638.19
2006 BMW 525iL6-3.0LService typeProportioning / Combination Valve ReplacementEstimate$878.51Shop/Dealer Price$1080.80 - $1638.09
1995 BMW 525iL6-2.5LService typeProportioning / Combination Valve ReplacementEstimate$878.51Shop/Dealer Price$1080.90 - $1638.27
1993 BMW 525iL6-2.5LService typeProportioning / Combination Valve ReplacementEstimate$878.51Shop/Dealer Price$1080.86 - $1638.19
2003 BMW 525iL6-2.5LService typeProportioning / Combination Valve ReplacementEstimate$908.51Shop/Dealer Price$1104.20 - $1656.54
1991 BMW 525iL6-2.5LService typeProportioning / Combination Valve ReplacementEstimate$908.51Shop/Dealer Price$1105.18 - $1658.26
Show example BMW 525i 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(192)

Rating Summary
176
6
2
0
8
176
6
2
0
8

Charles

34 years of experience
342 reviews
Charles
34 years of experience
BMW 525i L6-3.0L - Drive Belt Tensioner Replacement - Manor, Texas
Charles is awesome will always request him & will tell friends and family

Richard

21 years of experience
461 reviews
Richard
21 years of experience
BMW 525i L6-2.5L - Oil or Fluid is leaking - Riverdale, Georgia
EXCELLENT work will call again ,pius my wife love his work she was watch thought the window.

Eugenio

26 years of experience
133 reviews
Eugenio
26 years of experience
BMW 525i L6-2.5L - Oil or Fluid is leaking - Fairfax, Virginia

Stefan

17 years of experience
367 reviews
Stefan
17 years of experience
BMW 525i L6-2.5L - Oil Change - Antioch, California
excellant as always

Excellent Rating

(192)

Rating Summary
176
6
2
0
8
176
6
2
0
8
Number of BMW 525i services completed
2112+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

Top 10 Scenic Drives in Oklahoma
The Midwestern state of Oklahoma is known for its prairielands, mesas, minor mountain ranges, and blend of cultures. The Native American influence there is great with 24 tribal languages still in use, and there are also thriving German, Scottish, and...
P0018 OBD-II Trouble Code: Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
P0018 code definition Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A) What the P0018 code means P0018 is the OBD-II...
P2281 OBD-II Trouble Code: Air Leak Between Mass Airflow (MAF) Sensor and Throttle Body
Diagnostic Diagnostic Trouble Code (DTC): P2281 P2281 code definition Air Leak Between Mass Airflow (MAF) Sensor and Throttle Body Related Trouble Codes: P2282 : Air Leak Between Throttle Body and Intake Valves Engine Misfire Codes that may be a symptom...

Engine light flashing.

A flashing check engine light generally means there is a misfire dumping raw fuel into the exhaust system, usually caused by a consistent misfire, if the car is driven in that condition for long enough catalytic converter damage is likely....

My car cuts off when service park assist pops up. What can be causing this problem?

Hi there. The parking assist works with sensors around the vehicle to view any obstacles on the road to prevent any accidents. If the parking assist is stalling your vehicle, then the sensors are either dirty or damaged. I recommend...

Crankshaft and camshaft position sensor circuit malfunction

The 335 and 340 codes are for crankshaft and camshaft circuits. This could be bad sensors, or it could be an issue in the wiring to the sensors. The 421 is for a catalyst performance. It can come up because...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (844) 997-3624 · hi@yourmechanic.com