BMW 135i 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 135i Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2010 BMW 135iL6-3.0L TurboService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2013 BMW 135iL6-3.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2009 BMW 135iL6-3.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2012 BMW 135iL6-3.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.48 - $125.60
2008 BMW 135iL6-3.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.55 - $125.72
2011 BMW 135iL6-3.0L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
Show example BMW 135i 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.

Excellent Rating

(38)

Rating Summary
35
2
0
1
0
35
2
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0

Trung

12 years of experience
412 reviews
Trung
12 years of experience
BMW 135i L6-3.0L Turbo - Oil Change - San Mateo, California
Outstanding service from Trung. Very friendly, completed the service on time and explained everything. Will definitely use it again.

Pete

27 years of experience
3 reviews
Pete
27 years of experience
BMW 135i L6-3.0L Turbo - Window Motor / Regulator Assembly Replacement (Passenger Side Front) - Tracy, California
Pete was a complete professional and when he showed up took care of business. I would recommend Pete for any job and will make sure to enroll him for all my future projects with my vehicles...

Michael

16 years of experience
606 reviews
Michael
16 years of experience
BMW 135i L6-3.0L Turbo - Pre-purchase Car Inspection - Marietta, Georgia
Easy and professional.

Daniel

21 years of experience
346 reviews
Daniel
21 years of experience
BMW 135i L6-3.0L Turbo - Camshaft Position Sensor - Houston, Texas
Quick and simple!!! Very good work!!

Excellent Rating

(38)

Rating Summary
35
2
0
1
0
35
2
0
1
0
Number of BMW 135i services completed
418+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

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