Mercedes-Benz SL400 Loud squealing or rattling is coming from engine Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(5)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(5)

Loud squealing or rattling is coming from engine Inspection Service

How much does a Loud squealing or rattling is coming from engine Inspection cost?

On average, the cost for a Mercedes-Benz SL400 Loud squealing or rattling is coming from engine Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2015 Mercedes-Benz SL400V6-3.0L TurboService typeLoud squealing or rattling is coming from engine InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2016 Mercedes-Benz SL400V6-3.0L TurboService typeLoud squealing or rattling is coming from engine InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
Show example Mercedes-Benz SL400 Loud squealing or rattling is coming from engine Inspection prices

For those with little automotive experience, the area under the hood can be pretty mysterious. You know that when you press the gas pedal, the engine accelerates, and when you press the brake, the car slows down. You may know enough to change your air filter and check your oil level, but strange sounds coming from under the hood can be frightening and frustrating. If you’re hearing a squealing and/or rattling from under the hood, you’ll need to have it professionally inspected and repaired.

How this system works:

The engine of your car actually provides the power for most of your accessory systems, such as the power steering, the air conditioner and more. A turning engine provides the means to operate a wide range of additional parts. This is done by using belts and pulleys. In modern vehicles, you generally only have one or possibly two belts. These are routed around multiple different pulleys located on the side of the engine (and attached to various components).

As the engine spins, it turns the main pulley, which is attached to the camshaft. This main pulley drives the serpentine belt. The serpentine belt turns other pulleys, such as your alternator pulley, the power steering pump pulley and others. This provides the power for those systems to operate.

Of course, this does require that your belts are in good condition, and that your pulleys are working normally. Over time and through normal wear and tear, belts will stretch, crack and break. Pulleys will also experience problems (generally due to bearing failure over time).

Common reasons for this to happen:

  • Stretched Belt: Belts are made of rubber and while they’re designed for high-performance and high-heat situations, they do wear. First, they’ll begin to stretch. If you’re hearing a squealing sound from under the hood, chances are very good that it’s a belt slipping on the pulley.

  • Failing Pulley Bearings: When the bearings in a pulley begin to fail, it can produce both rattling and squealing sounds. This can easily be confused for other problems, including a stretched belt, loose exhaust components and more.

  • Loose Exhaust: Your exhaust system runs from the exhaust manifold on the engine, underneath the engine, and then under the car to the muffler. If your exhaust is damaged or a support has come loose, it’s possible that it could make a rattling sound during operation (particularly noticeable while idling and when accelerating).

  • Worn Brake Pads: If you’re hearing a squealing sound from the front of the car, there’s also the possibility that the brakes are worn out. Disc brake pads are equipped with a “squealer”, which is nothing more than a small piece of metal designed to contact the rotor when the pads are close to the end of their life. This creates a warning squeal, telling drivers it’s time to replace their pads.

What to expect:

A top-rated mobile mechanic will come to your home or office to inspect the engine, belts, pulleys and other components, and to listen to the squealing or rattling from the engine. The mechanic will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

The mechanic will need to inspect the vehicle, including listening to the squealing or rattling noise from the engine. Next, the mechanic will visually inspect the belts and pulleys to ensure that both are in good repair. If the noise does not occur when the engine is idling, it may be necessary for the mechanic to test drive the car to duplicate the symptoms and gain a better understanding of the problem.

How important is this service?

If the squealing or rattling sound from the engine is caused by either a belt or pulley, time is of the essence in addressing the issue. A loose belt can quickly progress from squealing to breaking, potentially leaving you stranded on the side of the road. If the problem stems from a worn pulley, it’s possible that it will eventually seize, which means that whatever accessory it operates will no longer work, and that there’s a chance the belt will break.

The best way to prevent problems like this from becoming serious issues is to have your belts and pulleys professionally inspected during routine maintenance services. If you’re experiencing a squealing or rattling sound from the engine, one of our professional mechanics can diagnose and repair the problem.

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

(5)

Rating Summary
4
0
1
0
0
4
0
1
0
0

David

10 years of experience
170 reviews
David
10 years of experience
Mercedes-Benz SL400 V6-3.0L Turbo - Pre-purchase Car Inspection - Orlando, Florida
Pre-Purchase service - On time with appointment. Follow up call and report was generated immediately which is greatly appreciate. Many thanks!!

Jerome

24 years of experience
415 reviews
Jerome
24 years of experience
Mercedes-Benz C230 V6-2.5L - Loud squealing or rattling is coming from engine - Baltimore, Maryland
Very knowledgeable and expeditious

Trevor

22 years of experience
185 reviews
Trevor
22 years of experience
Mercedes-Benz CLK320 V6-3.2L - Loud squealing or rattling is coming from engine Inspection - Cardiff By The Sea, California
Thank you.

Michael

10 years of experience
23 reviews
Michael
10 years of experience
Mercedes-Benz C220 L4-2.2L - Loud squealing or rattling is coming from engine - Atlanta, Georgia
He was great, very smooth and easy process.

Excellent Rating

(5)

Rating Summary
4
0
1
0
0
4
0
1
0
0
Number of Mercedes-Benz Loud squealing or rattling is coming from engine Inspection services completed
55+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Battery Cable
If you experience problems starting and powering the car or find corrosion on the battery terminals, you may need to replace a battery cable.
Veteran and Military Driver Laws and Benefits in California
The The state of California has a robust benefits program for drivers who have either served in an Armed Forces branch in the past, or are current active military members. Vehicle registration benefits California waives registration fees as well as...
P0556 OBD-II Trouble Code: Brake Booster Pressure Sensor Circuit Range/Performance
P0556 code means there is a problem with the brake booster pressure sensor circuit often due too shorted electrical circuitry or defective valves.

Car will intermittently not start

You should check the starter relay in the distribution panel box behind the left headlight in the engine compartment. This relay will relay power from the ignition switch to the starter solenoid. If you turn the ignition switch when the...

My car wont start it says something about the shifter and just clicks

There is a technical bulletin out for your 2015 Dodge Charger to reprogram the transmission control module to address this problem specifically. If you can't get it to crank (https://www.yourmechanic.com/services/car-is-not-starting-inspection), you will need to have the vehicle towed to the...

Hard to get into first gear

This may suggest failing transmission synchros. As you may know, when a clutch drags, it is not letting go of the disk fully which overloads the synchros and burns up the friction surfaces quickly. Synchros work by speeding up or...

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