Mercedes-Benz SL400 Drive Belt Tensioner Replacement at your home or office.

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Drive Belt Tensioner Replacement Service

How much does a Drive Belt Tensioner Replacement cost?

On average, the cost for a Mercedes-Benz SL400 Drive Belt Tensioner Replacement is $165 with $60 for parts and $104 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2015 Mercedes-Benz SL400V6-3.0L TurboService typeDrive Belt Tensioner ReplacementEstimate$681.45Shop/Dealer Price$839.44 - $1270.10
2016 Mercedes-Benz SL400V6-3.0L TurboService typeDrive Belt Tensioner ReplacementEstimate$224.87Shop/Dealer Price$274.25 - $379.00
Show example Mercedes-Benz SL400 Drive Belt Tensioner Replacement prices

What is the Drive Belt Tensioner all about?

A Drive Belt Tensioner is a pulley mounted to either a spring mechanism or to an adjustable pivot point that is used to keep constant tension on your serpentine belt. That is the big long belt in the front of your engine.

The tensioner rides on the outside surface of the belt to put pressure, or tension, on the belt and against the pulleys that drive things like the alternator, power steering, air conditioner, etc.

Keep in mind:

Tensioners usually come with pulleys; they are normally replaced together. Also, when replacing a tensioner, the drive belt usually must be removed. A mechanic may recommend replacing the belt as well.

How it's done:

  • Check for any noise in the engine (usually a squeaky or grinding noise).
  • Remove the drive belt(s) (in most cases).
  • Inspect drive belt pulleys.
  • Check the drive belt tensioner.
  • Remove and replace the tensioner if faulty.
  • Start car to see if noise is gone.

Our recommendation:

Your drive belt tensioner should always be inspected when your drive belt is serviced. During routine maintenance and inspection, your drive belt system should be reviewed to make sure that all the components are in working order. The drive belt tensioner will usually last longer than the drive belts, so as long as your tensioner is inspected or replaced when your drive belts are, your belt system should remain in good shape.

What common symptoms indicate you may need to replace the Drive Belt Tensioner?

Unusual noise (squeaky or grinding sound) every time you start the engine.

How important is this service?

The air conditioning, power steering, and alternator in your vehicle are given power through the drive belt. The belt is attached to both the crankshaft and these systems, and transfers power from the engine to drive each of these components. The drive belt tensioner is responsible for keeping the tension in the drive belt, which allows it to continue moving and transferring power. When the drive belt tensioner fails, the tension in the drive belt will begin to diminish, and the vehicle will not operate as well.

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Excellent Rating

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David

10 years of experience
170 reviews
David
10 years of experience
Mercedes-Benz SL400 V6-3.0L Turbo - Pre-purchase Car Inspection - Orlando, Florida
Pre-Purchase service - On time with appointment. Follow up call and report was generated immediately which is greatly appreciate. Many thanks!!

Raul

34 years of experience
285 reviews
Raul
34 years of experience
Mercedes-Benz C280 V6-2.8L - Drive Belt Tensioner Replacement - Palo Alto, California
Raul called to let me know exactly when he would arrive. He showed me everything he repaired. (broken parts) that were remove from my vehicle were visible. He exceeded lmy expectations. He was better and more trustworthy than an auto mechanic or dealer repair shop. Thanks Raul for a job well done

David

11 years of experience
225 reviews
David
11 years of experience
Mercedes-Benz Sprinter 3500 V6-3.0L Turbo Diesel - Drive Belt Tensioner - Shawnee Mission, Kansas
David is very competent, courteous, timely and helpful. Worked on my Mercedes. Highly recommend him.

Tien

23 years of experience
903 reviews
Tien
23 years of experience
Mercedes-Benz E500 V8-5.0L - Drive Belt Tensioner - San Ramon, California

Excellent Rating

(43)

Rating Summary
41
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Number of Mercedes-Benz Drive Belt Tensioner Replacement services completed
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services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
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