Mercedes-Benz C350 Pressure Test Radiator Cap at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(63)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(63)

Pressure Test Radiator Cap Service

How much does a Pressure Test Radiator Cap cost?

On average, the cost for a Mercedes-Benz C350 Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2011 Mercedes-Benz C350V6-3.5LService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2007 Mercedes-Benz C350V6-3.5LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2014 Mercedes-Benz C350V6-3.5LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2015 Mercedes-Benz C350V6-3.5LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.48 - $125.60
2013 Mercedes-Benz C350V6-3.5LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.55 - $125.72
2012 Mercedes-Benz C350V6-3.5LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2009 Mercedes-Benz C350V6-3.5LService typePressure Test Radiator CapEstimate$99.99Shop/Dealer Price$117.28 - $130.25
2008 Mercedes-Benz C350V6-3.5LService typePressure Test Radiator CapEstimate$99.99Shop/Dealer Price$117.94 - $131.39
Show example Mercedes-Benz C350 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(63)

Rating Summary
56
2
1
1
3
56
2
1
1
3

Kenneth

20 years of experience
785 reviews
Kenneth
20 years of experience
Mercedes-Benz C350 V6-3.5L - Stabilizer Bar Links Replacement (Front) - Los Angeles, California
Solid mechanic. Competent. Works pretty fast.

Joshua

27 years of experience
709 reviews
Joshua
27 years of experience
Mercedes-Benz C350 V6-3.5L - Air Filter - Antioch, California

Lucas

21 years of experience
891 reviews
Lucas
21 years of experience
Mercedes-Benz C350 V6-3.5L - Stabilizer Bar Links Replacement (Front) - Los Angeles, California
Lucas is a great mechanic. Super polite. He knows his stuff.

Joe

15 years of experience
453 reviews
Joe
15 years of experience
Mercedes-Benz C350 V6-3.5L - Serpentine/Drive Belt Replacement - Brentwood, Tennessee
wonderful experience. professional, quick and quality work. will use this service again and request Joe Kearns

Excellent Rating

(63)

Rating Summary
56
2
1
1
3
56
2
1
1
3
Number of Mercedes-Benz C350 services completed
693+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

What Is the Difference Between Sprung Weight and Unsprung Weight?
Car Car aficionados, particularly those involved with racing, sometimes talk about “sprung” and “unsprung” weight (or mass). What do these terms mean? The spring is the suspension component that holds the vehicle up and cushions it and its occupants and...
Symptoms of a Bad or Failing Coolant Temperature Switch (Sensor)
Common signs include poor fuel economy, black smoke coming from the engine, engine overheating, and the Check Engine Light turning on.
How to Remove Tar from Your Car
Tar is a black, sticky substance that comes from asphalting on the road. A solvent-based spray or a few household items can be used to remove it.

Do all cars have an OBD system?

Virtually all vehicles from the 1987 model year to the present day have an OBD system (https://www.yourmechanic.com/article/what-is-the-on-board-diagnostics-obd-system). Some earlier model year vehicles, but not all, have some semblance of an OBD system. However, their diagnostic abilities are severely limited. There...

Battery not holding charge

Hi. Inside a 12 volt battery there are 6 cells and each cell has a number of plates in it. These plates are suspended in acid which starts the chemical reaction that produces voltage across the terminals of the battery....

My cars coolant temp, goes up a little past the half way point just past the half line when I'm in traffic, it goes 1 or 2 lines past the half way point but cools down to the half way point when speeding up

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com