Mercedes-Benz S420 Alternator Repair at your home or office.

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
How does YourMechanic work?    
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

Alternator Repair Estimate for Mercedes-Benz S420

Mercedes-Benz S420 Alternator Repair costs $573 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$572 to $594
Labor: $154 -$176
Parts: $418
Average Dealer price
$1040
Average Shop price
$706
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1995 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.40 - $1923.03
1999 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.67 - $1923.49
1994 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.49 - $1923.19
1996 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.57 - $1923.33
1997 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.45 - $1923.10
1998 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.38 - $1923.00
Show example Mercedes-Benz S420 Alternator Repair prices

Alternator Repair Service & Cost

What is the Alternator all about?

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

Keep in mind:

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.

How it's done:

  • 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:

Ask your mechanic to inspect the condition of the charging system during every major service. 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.

How important is this service?

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 Alternator Repair service at your home or office.

GET A QUOTE FOR YOUR CAR
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.

399 reviews
Steven
10 years of experience
Fantastic mechanic. The cost of changing the oil at a Mercedes dealership was $283.00. He saved me over $190.00. He showed up on time, with a great smile. He sure knows his business. Did a great job!!!!!
2007 MERCEDES-BENZ E350 - OIL CHANGE
348 reviews
Joel
17 years of experience
Joel was very professional and very detail on the issue I had with my vehicle.
2006 MERCEDES-BENZ ML350 - CHECK ENGINE LIGHT IS ON INSPECTION
220 reviews
Shaun
12 years of experience
Shaun was great, He was on time, communicated well and reviewed everything with me when he was finished. A true professional.
1997 MERCEDES-BENZ E320 - OIL CHANGE
35 reviews
Brandon
6 years of experience
Brandon was very punctual and patient in getting the job done!!!
2005 MERCEDES-BENZ ML500 - CRANKSHAFT POSITION SENSOR REPLACEMENT
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1995 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.40 - $1923.03
1999 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.67 - $1923.49
1994 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.49 - $1923.19
1996 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.57 - $1923.33
1997 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.45 - $1923.10
1998 Mercedes-Benz S420V8-4.2LService typeAlternator RepairYourMechanic Price$989.60Shop/Dealer Price$1254.38 - $1923.00
Show example Mercedes-Benz S420 Alternator Repair prices

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.

1-800-701-6230 · hi@yourmechanic.com