Mercedes-Benz GLS450 Drive Belt Tensioner Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(4)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(4)

Drive Belt Tensioner Replacement Service

How much does a Drive Belt Tensioner Replacement cost?

On average, the cost for a Mercedes-Benz GLS450 Drive Belt Tensioner Replacement is $165 with $60 for parts and $104 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2018 Mercedes-Benz GLS450V6-3.0L TurboService typeDrive Belt Tensioner ReplacementEstimate$246.87Shop/Dealer Price$287.97 - $386.50
2017 Mercedes-Benz GLS450V6-3.0L TurboService typeDrive Belt Tensioner ReplacementEstimate$224.87Shop/Dealer Price$265.99 - $364.54
Show example Mercedes-Benz GLS450 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(4)

Rating Summary
4
0
0
0
0
4
0
0
0
0

Theodore

16 years of experience
1573 reviews
Theodore
16 years of experience
Mercedes-Benz GLS450 V6-3.0L Turbo - Brake Pads Replacement (Front, Rear) - Renton, Washington
Ive had Theodore come out multiple times to fix my cars. Each time has been excellent and would highly recommend him!

John

27 years of experience
1004 reviews
John
27 years of experience
Mercedes-Benz GLS450 V6-3.0L Turbo - 50 Point Inspection - Seabrook, Texas
JOHN WAS QUICK, WITTY AND VERY PROFESSIONAL OVER ALL.

Ramon

7 years of experience
94 reviews
Ramon
7 years of experience
Mercedes-Benz GLS450 L6-3.0L Turbo Hybrid - Oil Change - Burbank, California
Personable and did a nice job.

Christopher

20 years of experience
301 reviews
Christopher
20 years of experience
Mercedes-Benz GLS450 V6-3.0L Turbo - Initial Safety Inspection - Brandon, Florida
Chris did a great job, timely, professional, and knows what he's doing. Definitely would be using your services in the future. Thanks.

Excellent Rating

(4)

Rating Summary
4
0
0
0
0
4
0
0
0
0
Number of Mercedes-Benz GLS450 services completed
44+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1000+
experts on our platform

Recent articles & questions

The Best Used Cars to Buy If You Just Got Your License
If If you are a new driver, congratulations on getting your license. Now, you need to think about what type of vehicle to buy. Ideally, you’ll choose a used car that isn’t overly expensive, and is reliable and safe while...
How to Replace a Water Pump Pulley
The serpentine belt or drive belt drives an engine’s water pump pulley, which rotates the water pump. A bad pulley leads to a failure of this system.
P0361 OBD-II Trouble Code: Ignition Coil K Primary / Secondary Circuit Malfunction
Trouble code P0361 means that a malfunction in an ignition coil, often due to an open or short in the driver circuit.

Hit deer; car overheating

Hitting a deer can do a lot of damage to a vehicle and from the looks of it, your Pontiac G6 took quite the hit. The overheating being experienced is due to the broken radiator. I would recommend calling your...

Air conditioning clutch is not engaging unless I bypass the relay.

It does sound like an issue with the pressure switch (https://www.yourmechanic.com/services/ac-pressure-switch-replacement). When the switch fails, the compressor will not come on. Bypassing it turns on the compressor, which changes the pressure and allows the system to work. I would also...

Removing the car battery from a 2012 S63 AMG

Hi there. There will be a bolt that is attached to a wedge that is holding the battery in place. The bolt will be next to the battery and the black box. You may have to remove the black box...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com