Mercedes-Benz S580 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 S580 Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2021 Mercedes-Benz S580V8-4.0L Turbo HybridService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$124.99 - $132.49
2022 Mercedes-Benz S580V8-4.0L Turbo HybridService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$105.01 - $112.52
* Mercedes-Benz S580V8-4.0L Turbo HybridService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
* Mercedes-Benz S580V8-4.0L Turbo HybridService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.48 - $125.60
* Mercedes-Benz S580V8-4.0L Turbo HybridService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.55 - $125.72
Show example Mercedes-Benz S580 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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Joel

11 years of experience
154 reviews
Joel
11 years of experience
Mercedes-Benz GL450 V8-4.7L - Suspension Air Bag Replacement (Driver Side Front) - Frisco, Texas
I had a great experience, he was professional and finished the job quickly.

Jesus

16 years of experience
68 reviews
Jesus
16 years of experience
Mercedes-Benz E420 V8-4.2L - Pre-purchase Car Inspection - Long Beach, California
I requested a pre purchase inspection for a car about 200 miles away from where I live. Jesus was on time, responsive, and very pleasant to work with. He kept me abreast of his inspection and provided me his professional feedback on the status of the vehicle. He followed up with a comprehensive and easy to understand report of his findings. Awsome service and awesome professional mechanic. Thank you.

Victor

11 years of experience
211 reviews
Victor
11 years of experience
Mercedes-Benz E350 V6-3.5L - Thermostat - Norfolk, Virginia
Victor was great. Words can’t explain how happy I am being a first time customer. His personality is very warm and down to earth. It’s hard to trust mechanics however I felt no distrust from him. I think Victor is a great guy and I look forward to booking him again. Very satisfied finding this app and having a great 1st experience. I can remain a Customer knowing I can always expect integrity.

Ben

18 years of experience
114 reviews
Ben
18 years of experience
Mercedes-Benz GL450 V8-4.6L - Brake Pads Replacement (Front) - Parker, Colorado
Ben was right on time and did a great job!

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Rating Summary
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5,256
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