Mercedes-Benz SLK280 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 SLK280 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 Mercedes-Benz SLK280V6-3.0LService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2007 Mercedes-Benz SLK280V6-3.0LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2006 Mercedes-Benz SLK280V6-3.0LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
Show example Mercedes-Benz SLK280 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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Excellent Rating

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Rating Summary
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Sam

17 years of experience
115 reviews
Sam
17 years of experience
Mercedes-Benz SLK280 V6-3.0L - Pre-purchase Car Inspection - Fresno, California
Awesome, Honest, Intelligent, and explains everything clear. Very happy to work with Sam, thank you!!

Rigoberto

11 years of experience
739 reviews
Rigoberto
11 years of experience
Mercedes-Benz SLK280 V6-3.0L - Battery - Oak Park, Illinois
He was punctual, pleasant and fixed the problem expeditiously

Chris

22 years of experience
2229 reviews
Chris
22 years of experience
Mercedes-Benz SLK280 V6-3.0L - Pre-purchase Car Inspection - Laguna Hills, California
I hired Chris to inspect a car I wanted to purchase. He arrived on time and gave me a very detailed report, took the time to call me after to review details, and share his impression of the car. He was great and very knowledgeable, I would highly recommend him!

Joe

43 years of experience
821 reviews
Joe
43 years of experience
Mercedes-Benz SLK280 V6-3.0L - Alternator - Land O Lakes, Florida
The best mechanic I have ever met

Excellent Rating

(32)

Rating Summary
31
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31
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1
Number of Mercedes-Benz SLK280 services completed
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TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
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