Mercedes-Benz SL400 Alternator Repair 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

(146)

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

(146)

Alternator Repair Service

How much does a Alternator Repair cost?

On average, the cost for a Mercedes-Benz SL400 Alternator Repair is $515 with $344 for parts and $171 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2016 Mercedes-Benz SL400V6-3.0L TurboService typeAlternator RepairEstimate$894.48Shop/Dealer Price$1097.86 - $1637.12
2015 Mercedes-Benz SL400V6-3.0L TurboService typeAlternator RepairEstimate$858.48Shop/Dealer Price$1061.92 - $1601.21
Show example Mercedes-Benz SL400 Alternator Repair prices

How does an alternator help your car run?

The alternator is the component that charges the battery in your car. When you use electrical components in your car (stereo, lights, etc.), the battery loses power. The alternator recharges the battery, replenishing the lost battery power. The alternator is located in the engine compartment. If the alternator is not working properly, your car will only stay running for as long as the battery has power stored. Once the battery loses power, your car will not start. Normally, a malfunctioning alternator will turn on the battery warning light or will have a low volt gauge reading.

Alternator

Before repairing the alternator:

The mechanic should check the entire charging system before installing a new alternator, including checking battery cables for corrosion and the condition of the battery.

Steps when replacing an alternator:

  • Inspect entire charging system (battery, cables, alternator).
  • Inspect the drive belts.
  • Test alternator output.
  • Remove and replace alternator if found to be faulty.
  • Re-test alternator output.

Our recommendation for alternator replacements:

Ask your mechanic to inspect the condition of the charging system during every major service. The mechanic should also clean and tighten the battery cables during every major service.

What common symptoms indicate you may need to replace the Alternator?

  • Dead battery or battery will not hold a charge.
  • Dim lights.
  • Battery warning light is on.

Why repairing your alternator is important:

Your alternator charges your battery, which powers the electronics in your vehicle, such as the radio and the air conditioning. The battery is also needed to turn on your vehicle. A malfunctioning alternator will not charge your car’s battery, and your vehicle will eventually run out of battery life and not be able to start.

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

(146)

Rating Summary
140
1
1
0
4
140
1
1
0
4

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!!

Theodore

16 years of experience
1587 reviews
Theodore
16 years of experience
Mercedes-Benz ML320 V6-3.2L - Alternator Repair - Renton, Washington
Theo was prompt and knowledgeable. He identified the problem and corrected same quickly. We will use the service again.

Robert

20 years of experience
1089 reviews
Robert
20 years of experience
Mercedes-Benz CLK320 V6-3.2L - Alternator - Denver, Colorado
Robert did a fine job. He did testing to verify alternator needed replaced. Did repair in a timely manner, was very polite and professional.

Tien

23 years of experience
903 reviews
Tien
23 years of experience
Mercedes-Benz E500 V8-5.0L - Alternator - Berkeley, California
Tien's been a great mechanic! I've had him work on my car for various problems and he's been able to fix them each time. He went above and beyond the call of duty, highly recommend!

Excellent Rating

(146)

Rating Summary
140
1
1
0
4
140
1
1
0
4
Number of Mercedes-Benz Alternator Repair services completed
1606+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

What Causes an Oil Filter to Get Dirty?
At At some point during your time as a vehicle owner, you’ve likely had your oil filter changed, probably at the same time as an oil change. Few people give this minor maintenance more than a second thought. After all,...
How Long Does a Manifold Temperature Sensor Last?
Keeping Keeping a car running at peak condition is a lot harder that most people think. The engine of a car is a very complicated piece of machinery that has just the right amount of fuel and air to run...
How to Transfer a Car Title in Arkansas
Like Like all other states in the country, Arkansas requires a vehicle title to prove ownership of a vehicle (within certain limits, ages, and vehicle types). The state requires both the buyer and the seller to complete several specific steps...

I went to start it and it turns over but just wont start

Your Jimmy most likely has a week fuel pump. A cold motor needs more fuel to run than a fully warmed motor. With this motor you can add fuel to get it started. I suggest starter fluid because it can...

Gear shift is broken off. The car is stuck in park and cannot be moved - 2002 Ford Explorer

Hello. If your vehicle's shifter was broken, then it will need to be replaced before the vehicle can be driven again. Once the shifter is replaced, I would also recommend taking care of the issue that is requiring you to...

Overheating issue brought into dealer want to take apart engine to check head gasket

If the dealer is stating to you that the engine is no longer overheating, and that there are no combustion gases in the coolant, it is not clear what the problem is that they are trying to resolve by taking...

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