Mercedes-Benz 400SEL 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

(49)

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

(49)

Drive Belt Tensioner Replacement Service

How much does a Drive Belt Tensioner Replacement cost?

On average, the cost for a Mercedes-Benz 400SEL Drive Belt Tensioner Replacement is $288 with $106 for parts and $182 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1993 Mercedes-Benz 400SELV8-4.2LService typeDrive Belt Tensioner ReplacementEstimate$412.70Shop/Dealer Price$473.69 - $638.23
Show example Mercedes-Benz 400SEL 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

(49)

Rating Summary
47
2
0
0
0
47
2
0
0
0

Attila

20 years of experience
1104 reviews
Attila
20 years of experience
Mercedes-Benz 400SEL V8-4.2L - Car starts and then dies - Union, New Jersey
First his did great job and finally he said the issue was ignition coil.

Wayne

24 years of experience
65 reviews
Wayne
24 years of experience
Mercedes-Benz ML350 V6-3.5L - Drive Belt Tensioner Replacement - Bothell, Washington
Wayne was awesome, he has great work experience and knowledge on how to attend repair.

Patrick

33 years of experience
369 reviews
Patrick
33 years of experience
Mercedes-Benz R350 V6-3.5L - Drive Belt Tensioner - North Las Vegas, Nevada

Chris

23 years of experience
2372 reviews
Chris
23 years of experience
Mercedes-Benz C230 L4-2.3L - Drive Belt Tensioner - Anaheim, California
It was a pleasure working with Chris. He was professional top to bottom with what he did and how he did it. He answered questions I had regarding my situation and gave understandable responses. If needed, I would work with him again. Thank you Chris.

Excellent Rating

(49)

Rating Summary
47
2
0
0
0
47
2
0
0
0
Number of Mercedes-Benz Drive Belt Tensioner Replacement services completed
539+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Prepare for the Michigan Driver’s Written Test
When When you are getting ready to get your license, it can be a very exciting time. You can’t wait to get on the road. However, you need to make sure you can actually pass your Michigan driver’s written test...
P2112 OBD-II Trouble Code: Throttle Actuator Control System - Stuck Closed
P2112 code definition Throttle Actuator Control System - Stuck Closed What the P2112 code means P2112 is a general ODB2 diagnostic trouble...
A Guide to Tire Safety
When When sitting behind the wheel of a car, there are two things that most drivers want: to reach their destination, and to do so as safely as possible. This means having a car that is in good condition, and...

Car makes groaning noise when I turn steering wheel.

It sounds like your power steering pump may be out of power steering fluid or it is low. I would recommend having a technician from YourMechanic come out and see if the power steering is leaking somewhere or if the...

two front wheel speed sensor died

As long as the light is out and does not come back on, then the system is working as it should. The problem with the sensors may be an intermittent problem in the sensors or the wires going to the...

Smoke from exhaust still after new PCV and turbo

Hi there, thanks for writing in. I am sure that you have driven your car far enough (since repairs) to rule out residual oil in the exhaust system. The P0015 "cam retard" code (https://www.yourmechanic.com/article/p0015-obd-ii-trouble-code-camshaft-position-b-timing-over-retarded-bank-1-by-jay-safford) may be a cam sensor, oil...

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