Mercedes-Benz E280 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 Mercedes-Benz E280 Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2007 Mercedes-Benz E280V6-3.0LService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$132.49 - $145.62
Show example Mercedes-Benz E280 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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Larry

19 years of experience
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Larry
19 years of experience
Mercedes-Benz GL450 V6-3.0L Turbo - Oil Change - Fremont, California
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Torrieanto
12 years of experience
Mercedes-Benz GL450 V8-4.6L - Car is hard to shift - Tampa, Florida
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Ben
41 years of experience
Mercedes-Benz CLK350 V6-3.5L - Intake Manifold Runner Control - Katy, Texas
Ben was very prompt and very nice. My car was idling rough and had random misfire codes. He took pictures of the codes on my car prior to repair (12 codes) and after repair (3) as well as pictures of the part he repaired. He said I had no vacuum leaks but after I had the codes checked again later, I still have the same 12 codes. He suggested that I have 2 spark plugs replaced and clean the throttle body. After having this done the car still has 12 codes and idles very rough. Ben seems like a very good mechanic, so maybe my car just stumped him. I dunno...

Tim

12 years of experience
101 reviews
Tim
12 years of experience
Mercedes-Benz C250 L4-1.8L Turbo - Oil Change - San Antonio, Texas
Service was quick and convenient.

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