Mercedes-Benz ML550 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

(24)

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

(24)

Drive Belt Tensioner Replacement Service

How much does a Drive Belt Tensioner Replacement cost?

On average, the cost for a Mercedes-Benz ML550 Drive Belt Tensioner Replacement is $238 with $134 for parts and $104 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2011 Mercedes-Benz ML550V8-5.5LService typeDrive Belt Tensioner ReplacementEstimate$393.49Shop/Dealer Price$479.49 - $694.18
2013 Mercedes-Benz ML550V8-4.7L TurboService typeDrive Belt Tensioner ReplacementEstimate$597.63Shop/Dealer Price$731.94 - $1110.06
2008 Mercedes-Benz ML550V8-5.5LService typeDrive Belt Tensioner ReplacementEstimate$371.49Shop/Dealer Price$457.52 - $672.24
2014 Mercedes-Benz ML550V8-4.7L TurboService typeDrive Belt Tensioner ReplacementEstimate$597.63Shop/Dealer Price$731.91 - $1110.01
2012 Mercedes-Benz ML550V8-4.7L TurboService typeDrive Belt Tensioner ReplacementEstimate$597.63Shop/Dealer Price$731.95 - $1110.08
2009 Mercedes-Benz ML550V8-5.5LService typeDrive Belt Tensioner ReplacementEstimate$456.98Shop/Dealer Price$558.79 - $785.34
2010 Mercedes-Benz ML550V8-5.5LService typeDrive Belt Tensioner ReplacementEstimate$376.99Shop/Dealer Price$462.76 - $677.28
Show example Mercedes-Benz ML550 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

(24)

Rating Summary
22
2
0
0
0
22
2
0
0
0

Chris

22 years of experience
2198 reviews
Chris
22 years of experience
Mercedes-Benz ML550 V8-4.7L Turbo - Axle / CV Shaft Assembly Replacement (Driver Side Front) - Santa Ana, California
On time professional and great work!

Jay

23 years of experience
134 reviews
Jay
23 years of experience
Mercedes-Benz ML550 V8-5.5L - Car Starter Repair - Niles, Illinois
arrived few minutes earlier then scheduled ! , friendly and finished his job on time with positive results , thanks Jay!

Stephen

28 years of experience
5 reviews
Stephen
28 years of experience
Mercedes-Benz ML550 V8-5.5L - Battery - Dublin, Ohio
Steve was very helpful and knowledgeable.

Manuel

32 years of experience
580 reviews
Manuel
32 years of experience
Mercedes-Benz ML550 V8-5.5L - Brake Pads Replacement (Front) - Dana Point, California
Manuel was awesome. Showed up on time and was outstanding making sure he kept everything clean while installing new rotors and breaks. He went over everything with me and no doubt I will request him again for my next service

Excellent Rating

(24)

Rating Summary
22
2
0
0
0
22
2
0
0
0
Number of Mercedes-Benz ML550 services completed
264+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1000+
experts on our platform

Recent articles & questions

Symptoms of Bad or Failing Trailing Arm Bushings
Common signs include a clunking noise when you accelerate or brake, excessive and uneven wear on tires, and loose steering when turning corners.
P0055 OBD-II Trouble Code: Heater Circuit Resistance (Bank 1, Sensor 3)
P0055 P0055 code definition Heater Circuit Resistance (Bank 1, Sensor 3) What the P0055 code means When this code is set it means that the Engine Control Module (ECM) has detected a problem with the amount of resistance in the...
Child Seat Safety Laws in Indiana
Indiana Indiana has laws that mandate the protection of children when they are travelling in motor vehicles. These laws are founded in common sense – children of certain ages are not safe when just using adult safety belts that are...

Modify 4 speed transmission to 6 speed.

Unfortunately, undertaking a procedure such as converting an existing 4 speed transmission to a 6 speed transmission would be a task that may exceed the cost of the car to undertake. As you may know, your transmission is a complex...

Blinking check engine light.

Engine misfires can be caused by many different problems, but there are a few suspects that occur more than others. Generally, misfires are caused by either a spark or fuel issue or in cases, a combination of both. Spark related...

What is the cost to replace the tensioner pulley, idler pulley, and the drive belt?

Billing question sent to CS for the cost to replace the tensioner, pulleys, and the drive belts.

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