BMW 535xi 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 535xi Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2008 BMW 535xiL6-3.0L TurboService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$132.49 - $145.62
Show example BMW 535xi 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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Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

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Rating Summary
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Joe

20 years of experience
126 reviews
Joe
20 years of experience
BMW 535xi L6-3.0L Turbo - Ignition Coil Replacement - River Forest, Illinois
Joe was great. He showed up on time and went above and beyond. I highly recommend Joe

Tien

23 years of experience
903 reviews
Tien
23 years of experience
BMW 535xi L6-3.0L Turbo - Starter - Orinda, California
Very professional and knowledgeable

Dave

23 years of experience
303 reviews
Dave
23 years of experience
BMW 535xi L6-3.0L Turbo - Differential Fluid Service (Rear Axle Oil Service) - Palo Alto, California

Rigoberto

11 years of experience
739 reviews
Rigoberto
11 years of experience
BMW 535xi L6-3.0L Turbo - Oil Cooler Adapter Gasket - River Forest, Illinois
Rego was great and explained everything perfectly

Excellent Rating

(22)

Rating Summary
22
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0
0
0
22
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Number of BMW 535xi services completed
242+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

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