Mercedes-Benz GLS550 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 GLS550 Drive Belt Tensioner Replacement is $394 with $240 for parts and $154 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2018 Mercedes-Benz GLS550V8-4.7L TurboService typeDrive Belt Tensioner ReplacementEstimate$650.92Shop/Dealer Price$774.99 - $1138.27
2017 Mercedes-Benz GLS550V8-4.7L TurboService typeDrive Belt Tensioner ReplacementEstimate$653.73Shop/Dealer Price$779.03 - $1150.40
Show example Mercedes-Benz GLS550 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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Travis

14 years of experience
160 reviews
Travis
14 years of experience
Mercedes-Benz GLS550 V8-4.7L Turbo - Car Battery Replacement - Waxhaw, North Carolina
After the installation, the front right seat malfunction notice popped up on my car screen. Tried to call the technician, but didn't answer nor return my calls

Jordan

9 years of experience
144 reviews
Jordan
9 years of experience
Mercedes-Benz GLS550 V8-4.7L Turbo - Brake Rotor/Disc Replacement (Rear) - Kissimmee, Florida
perfect service thanks

Jordan

9 years of experience
144 reviews
Jordan
9 years of experience
Mercedes-Benz GLS550 V8-4.7L Turbo - Trunk Lift Support Shocks - Kissimmee, Florida
On time, perfect service

Damian

12 years of experience
465 reviews
Damian
12 years of experience
Mercedes-Benz C230 L4-1.8L Turbo - Drive Belt Tensioner Replacement - Bowie, Maryland
Excellent

Excellent Rating

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47
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