Mercedes-Benz 420SEL Cooling System Flush at your home or office.

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Average rating from customers who
received a Cooling System Flush.
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$168.97 - $183.97

Price range for all vehicles


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Average rating from customers who
received a Cooling System Flush.
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Cooling System Flush Estimate for Mercedes-Benz 420SEL

Mercedes-Benz 420SEL Cooling System Flush costs $177 on average.

CarServiceEstimateShop/Dealer Price
1988 Mercedes-Benz 420SELV8-4.2LService typeCooling System FlushEstimate$225.45Shop/Dealer Price$281.02 - $377.80
1990 Mercedes-Benz 420SELV8-4.2LService typeCooling System FlushEstimate$225.45Shop/Dealer Price$280.86 - $377.53
1987 Mercedes-Benz 420SELV8-4.2LService typeCooling System FlushEstimate$225.45Shop/Dealer Price$281.02 - $377.80
1986 Mercedes-Benz 420SELV8-4.2LService typeCooling System FlushEstimate$232.95Shop/Dealer Price$286.63 - $381.99
1991 Mercedes-Benz 420SELV8-4.2LService typeCooling System FlushEstimate$225.45Shop/Dealer Price$285.43 - $385.52
1989 Mercedes-Benz 420SELV8-4.2LService typeCooling System FlushEstimate$225.45Shop/Dealer Price$277.81 - $372.19
Show example Mercedes-Benz 420SEL Cooling System Flush prices

Cooling System Flush Service

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

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating


YourMechanic Mercedes-Benz 420SEL Service

Average Rating

5/5

Number of Reviews

11

Rating Summary
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Dwaine

44 years of experience
39 reviews
Dwaine
44 years of experience
Mercedes-Benz 420SEL - Oil Cooler Hose (Automatic Transmission) - Brandon, Florida
Great experience, very polite and knowledgeable mechanic.

Sayeed

16 years of experience
82 reviews
Sayeed
16 years of experience
Mercedes-Benz 420SEL - Power Steering Fluid Service - Copiague, New York
Excellent

Carlos

27 years of experience
273 reviews
Carlos
27 years of experience
Mercedes-Benz 420SEL - Serpentine/Drive Belt - Ontario, California
Carlos came on time (unlike others who cancelled the appointment several times). He came, TWICE because of my car needed more parts than expected. Great job, friendly, very professional, I HIGHLY recommend him, and will make sure next time - if needed - he will be the one I ask for. Thank you Carlos

Erick

9 years of experience
182 reviews
Erick
9 years of experience
Mercedes-Benz 420SEL - Oil Change - Palo Alto, California

Excellent Rating


YourMechanic Mercedes-Benz 420SEL Service

Average Rating

5/5

Number of Reviews

11

Rating Summary
11
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11
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Red-stars EXCELLENT RATING ON
Number of Mercedes-Benz 420SEL services completed
121+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
800+
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