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Mercedes-Benz S450 Ignition Coil Replacement at your home or office.

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Ignition Coil Replacement Service

How much does a Ignition Coil Replacement cost?

On average, the cost for a Mercedes-Benz S450 Ignition Coil Replacement is $1081 with $941 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2011 Mercedes-Benz S450V8-4.7LService typeIgnition Coil ReplacementEstimate$2037.56Shop/Dealer Price$2511.80 - $3926.42
2008 Mercedes-Benz S450V8-4.7LService typeIgnition Coil ReplacementEstimate$2028.55Shop/Dealer Price$2501.02 - $3914.32
2009 Mercedes-Benz S450V8-4.7LService typeIgnition Coil ReplacementEstimate$2028.55Shop/Dealer Price$2501.05 - $3914.36
2010 Mercedes-Benz S450V8-4.7LService typeIgnition Coil ReplacementEstimate$2028.55Shop/Dealer Price$2501.05 - $3914.36
Show example Mercedes-Benz S450 Ignition Coil Replacement prices

What is an ignition coil and how does it work?

An ignition coil transforms ignition voltage (12 volts) to the very high voltage pulses (20,000 volts or more) that fire the spark plugs. The number of ignition coils varies depending on car model and year of production. Older cars will have one coil covering all engine cylinders while newer cars may have a coil-on-plug type arrangement — that is every cylinder will have its own dedicated ignition coil.

Ignition Coils

When to consider replacing an ignition coil:

  • Hard starting or no start. Ignition coils are subject to heat damage and electrical overload, both of which can cause partial or total failure. If the coil is faulty, you may have difficulty starting your car or it may not start at all.
  • Misfiring, loss of power, poor acceleration. Once the car is running, a bad ignition coil can cause poor operation of the engine. Should you have misfiring or loss of power, faulty ignition coils would be among the list of causes a mechanic would investigate. The Check Engine Light will often come on with a trouble code(s) indicating which cylinders are involved.

How do mechanics replace the ignition coil?

  • The ignition is checked to assure it is in the “off” position.
  • For single coils that supply all cylinders, the coil is disconnected from either a bracket located in the engine compartment or, in some cases, is removed from within the distributor. The replacement coil is secured and all electrical connections reattached. If the distributor was removed for any reason, the timing is adjusted as required.
  • For individual coil-on-plug applications, the coil is detached from the top of the individual spark plug and replaced.
  • Once the coil is securely in place, all electrical connections are reattached, and timing adjusted as needed, the car is road tested to ensure normal operation.

Is it safe to drive with an ignition coil problem?

Yes. A malfunctioning ignition coil will cause loss of power and lower fuel efficiency but that will not present an immediate safety issue. If the coil malfunction is causing misfiring, this will allow unburned fuel to enter and permanently damage the catalytic converter from overheating.

When replacing an ignition coil keep in mind:

  • Ignition coil failure can be caused by faulty spark plugs or wires. The mechanic will inspect and may recommend replacement of those components.
  • In a coil-on-plug ignition system, if only one coil fails, you need only replace the faulty coil. Remaining functioning coils can be left in place.
  • In systems with the coil located in the distributor, it may be more cost-effective to replace the entire distributor rather than remove and replace just the coil.

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Number of Mercedes-Benz Ignition Coil Replacement services completed
572+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform
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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(52)
Rating Summary
50
0
0
0
2
50
0
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2

Tinashe

14 years of experience
781 reviews
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Tinashe
14 years of experience
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by Justin
Mercedes-Benz S450 V6-3.0L Turbo - Turo Host Inspection - Atlanta, Georgia
Amazing guy and very thorough. Best guy for the job 

Kenneth

21 years of experience
870 reviews
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Kenneth
21 years of experience
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by Mia
Mercedes-Benz S450 V6-3.0L Turbo - Pre-purchase Car Inspection - Los Angeles, California
Kenneth is very friendly and easy to work with.

Ricardo

15 years of experience
339 reviews
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Ricardo
15 years of experience
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by Mia
Mercedes-Benz S450 V6-3.0L Turbo - Pre-purchase Car Inspection - Culver City, California
Ricardo is very trustworthy, responsible, on time for the service , and fast reply.

Vlad

15 years of experience
79 reviews
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Vlad
15 years of experience
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by Lois
Mercedes-Benz E350 V6-3.5L - Ignition Coil - Palatine, Illinois
This was my second time having him to work on my car. My first experience with him was super, and he was even better the second time. He know what he is doing and he goes extra miles to help customers.

Excellent Rating

(52)
Rating Summary
50
0
0
0
2
50
0
0
0
2
Number of Mercedes-Benz Ignition Coil Replacement services completed
572+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

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