Mercedes-Benz S420 Cooling System Flush at your home or office.

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Cooling System Flush Service

How much does a Cooling System Flush cost?

On average, the cost for a Mercedes-Benz S420 Cooling System Flush is $206 with $63 for parts and $142 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1999 Mercedes-Benz S420V8-4.2LService typeCooling System FlushEstimate$298.87Shop/Dealer Price$356.71 - $471.19
1995 Mercedes-Benz S420V8-4.2LService typeCooling System FlushEstimate$268.87Shop/Dealer Price$326.76 - $441.27
1997 Mercedes-Benz S420V8-4.2LService typeCooling System FlushEstimate$268.87Shop/Dealer Price$326.76 - $441.26
1998 Mercedes-Benz S420V8-4.2LService typeCooling System FlushEstimate$268.87Shop/Dealer Price$326.70 - $441.16
1994 Mercedes-Benz S420V8-4.2LService typeCooling System FlushEstimate$268.87Shop/Dealer Price$326.80 - $441.34
1996 Mercedes-Benz S420V8-4.2LService typeCooling System FlushEstimate$268.87Shop/Dealer Price$326.76 - $441.26
Show example Mercedes-Benz S420 Cooling System Flush prices

What is the cooling system flush all about?

Your cooling system is what keeps your car from overheating. It works by circulating a mixture of water and coolant through the engine. Over time the coolant mixture becomes contaminated with scale and rust, which can clog and damage the cooling system components. A cooling system flush essentially flushes out the entire system of contaminants and replaces the coolant mixture with fresh coolant and water.

Keep in mind:

Your mechanic will drain the fluid, clean the system with coolant cleaner, and use water to remove the remaining coolant. After cleaning the system, the mechanic will fill it up with new coolant. This process is effective and an approved industry method of flushing your vehicle’s cooling system.

How it's done:

  • Install flush chemical to radiator
  • Bring the car to operating temperature
  • Drain the old coolant
  • Close valve and refill with water
  • Repeat the process
  • Fill radiator with a 50/50 mixture of coolant and water
  • Check for leaks and fan operation

Our recommendation:

  • Some vehicles are equipped with a low coolant sensing system. Should this light come on, have your vehicle inspected for leaks or other possible causes for the low coolant level.

  • Follow the service maintenance schedule provided by the manufacturer to get the coolant replaced at regular intervals. In general, it is a good practice to change the coolant every 40,000-50,000 miles.

What are the common symptoms indicating you need to flush the cooling system?

  • Check Engine warning light is on
  • Low Coolant warning light is on
  • Engine is overheating

How important is this service?

A cooling system flush is an important part of preventative maintenance and helps to keep your car healthy and on the road.

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Meet some of our expert Mercedes-Benz mechanics

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Excellent Rating

(13)

Rating Summary
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Eric

15 years of experience
133 reviews
Eric
15 years of experience
Mercedes-Benz S420 V8-4.2L - Oil Change - Bowie, Maryland
Kept me informed for his arrival. Was very friendly.

Peter

43 years of experience
1321 reviews
Peter
43 years of experience
Mercedes-Benz S420 V8-4.2L - Transmission fluid is leaking Inspection - Phoenix, Arizona
Awesome mechanic and great knowledge

Tien

23 years of experience
903 reviews
Tien
23 years of experience
Mercedes-Benz S420 V8-4.2L - Water Pump - Moraga, California

Jamie

22 years of experience
77 reviews
Jamie
22 years of experience
Mercedes-Benz S420 V8-4.2L - Serpentine/Drive Belt Replacement - Ontario, California
Great job

Excellent Rating

(13)

Rating Summary
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Number of Mercedes-Benz S420 services completed
143+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1000+
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