Mercedes-Benz CLS500 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 CLS500 Drive Belt Tensioner Replacement is $276 with $143 for parts and $133 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2006 Mercedes-Benz CLS500V8-5.0LService typeDrive Belt Tensioner ReplacementEstimate$446.03Shop/Dealer Price$541.79 - $773.95
Show example Mercedes-Benz CLS500 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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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(34)

Rating Summary
29
3
0
1
1
29
3
0
1
1

William

30 years of experience
377 reviews
William
30 years of experience
CLS500 2006 - Crankshaft Harmonic Balancer - Phoenix, AZ
Great mechanic very savvy, job was completed successfully A+

Carlos

23 years of experience
467 reviews
Carlos
23 years of experience
CLS500 2006 - Strut Assembly - Riverside, CA
Excellent service

Raymond

25 years of experience
137 reviews
Raymond
25 years of experience
CLS500 2006 - Air Pump - Apple Valley, CA
Raymond is awesome. Very knowledgeable in his work. And an overall great guy. Thank you, Raymond.

Joel

15 years of experience
1142 reviews
Joel
15 years of experience
CLS500 2006 - Brake Rotor/Disc - Jacksonville, FL
Awesome and knowledgeable mechanic! Will request again.

Excellent Rating

(34)

Rating Summary
29
3
0
1
1
29
3
0
1
1
Number of Mercedes-Benz CLS500 services completed
374+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
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