Mercedes-Benz SL450 Alternator Repair at your home or office.

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Alternator Repair Service

How much does a Alternator Repair cost?

On average, the cost for a Mercedes-Benz SL450 Alternator Repair is $805 with $553 for parts and $252 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2020 Mercedes-Benz SL450V6-3.0L TurboService typeAlternator RepairEstimate$1385.12Shop/Dealer Price$1668.13 - $2502.58
2019 Mercedes-Benz SL450V6-3.0L TurboService typeAlternator RepairEstimate$1368.90Shop/Dealer Price$1648.73 - $2480.80
2017 Mercedes-Benz SL450V6-3.0L TurboService typeAlternator RepairEstimate$1398.10Shop/Dealer Price$1678.35 - $2510.73
2018 Mercedes-Benz SL450V6-3.0L TurboService typeAlternator RepairEstimate$1398.10Shop/Dealer Price$1678.35 - $2510.72
Show example Mercedes-Benz SL450 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.

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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(170)

Rating Summary
159
4
1
0
6
159
4
1
0
6

Mario

5 years of experience
24 reviews
Mario
5 years of experience
Mercedes-Benz SL450 V6-3.0L Turbo - Battery - North Palm Beach, Florida
Kept me up to date on when he would arrive

Ben

42 years of experience
1589 reviews
Ben
42 years of experience
Mercedes-Benz E420 V8-4.2L - Alternator - Houston, Texas
Fast work. Friendly. Very competent.

Victor

12 years of experience
211 reviews
Victor
12 years of experience
Mercedes-Benz SL500 V8-5.0L - Alternator - Chesapeake, Virginia
Victor was a true professional, he quickly went to work and responded to every question asked as it pertained to what had to be done to my vechile.

Johnny

34 years of experience
392 reviews
Johnny
34 years of experience
Mercedes-Benz ML350 V6-3.5L - Alternator - Carmichael, California
Johny is very professional, efficient and knowledgeable about Mercedes services! I highly recommend his work! Thank you Johny!!!

Excellent Rating

(170)

Rating Summary
159
4
1
0
6
159
4
1
0
6
Number of Mercedes-Benz Alternator Repair services completed
1870+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

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