BMW M235i Pressure Test Radiator Cap at your home or office.

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Pressure Test Radiator Cap Service

How much does a Pressure Test Radiator Cap cost?

On average, the cost for a BMW M235i Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2016 BMW M235iL6-3.0L TurboService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$139.99 - $158.75
2014 BMW M235iL6-3.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$120.04 - $138.82
2015 BMW M235iL6-3.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$120.03 - $138.82
Show example BMW M235i Pressure Test Radiator Cap prices

What is the radiator cap pressure test all about?

In a pressurized cooling system like those found on all cars, your car’s radiator cap is calibrated to seal in coolant to a particular pressure point, then allow some vapor to escape once that threshold has been reached. The ejected fluid is piped into the overflow bottle you might have seen in the engine bay. Then, as the engine cools, the coolant level may drop inside radiator. When that happens, a reverse-flow valve in the radiator cap opens to allow fluid from the bottle to return to the radiator. A radiator cap that isn’t working properly may cause too much fluid to escape the system.

Keep in mind:

  • A radiator cap pressure test is quick and simple, and replacement radiator caps are inexpensive.
  • Leaving a defective radiator cap in place can cause damage to the engine.

How it's done:

  • The vehicle engine is cooled before the radiator cap can be removed
  • The radiator pressure is relieved and the cap is removed
  • The radiator cap is pressure tested to specifications
  • The radiator cap is replaced and/or reinstalled to the radiator
  • The vehicle is verified to confirm problem is fixed

Our recommendation:

If your car’s engine overheats, or the overflow bottle seems overly full, have the radiator (and radiator cap) pressure tested.

What are the common symptoms indicating you need to pressure test the radiator cap?

  • Car overheats
  • Car’s overflow bottle fills up

How important is this service?

Not having this safety valve on the car’s cooling system operate properly can over- or under-pressurize the system, leading to damage to hoses, the radiator, and even the car’s cylinder head.

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6,192
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Ronald

41 years of experience
313 reviews
Ronald
41 years of experience
BMW M235i L6-3.0L Turbo - reservoir return hose - Spring, Texas
Very professional and courteous. Was able to source the part and get it done quickly and cost effectively. Will use again.

Jean

15 years of experience
71 reviews
Jean
15 years of experience
BMW M235i L6-3.0L Turbo - Car Battery Replacement - Clearwater, Florida
Work was good but quote was increased and wrong part sent so service was not complete

Jose

9 years of experience
63 reviews
Jose
9 years of experience
BMW M235i L6-3.0L Turbo - Brake Pads Replacement (Front) - San Mateo, California
Jose was extremely professional and did a great job changing the brakes on my car. He was on schedule and communicated very well. I would completely recommended him to anyone.

Doug

34 years of experience
139 reviews
Doug
34 years of experience
BMW 328i GT xDrive L4-2.0L Turbo - Serpentine/Drive Belt - Temecula, California
Doug was on time, very pleasant to speak with as well. He was helpful with resetting my oil change on my dash I had previously. He was honest and direct about my car. It just does not get any better than this. Thanks to Doug for doing an awesome job...

Excellent Rating

(6,643)

Rating Summary
6,192
205
60
44
142
6,192
205
60
44
142
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