Mercedes-Benz ML450 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 ML450 Ignition Coil Replacement is $199 with $104 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2010 Mercedes-Benz ML450V6-3.5L HybridService typeIgnition Coil ReplacementEstimate$322.15Shop/Dealer Price$391.44 - $559.94
2011 Mercedes-Benz ML450V6-3.5L HybridService typeIgnition Coil ReplacementEstimate$302.15Shop/Dealer Price$371.47 - $539.99
Show example Mercedes-Benz ML450 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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Meet some of our expert Mercedes-Benz mechanics

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Excellent Rating

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Rating Summary
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David

28 years of experience
142 reviews
David
28 years of experience
Mercedes-Benz S500 V8-5.0L - Ignition Coil - San Diego, California
very competent

Ricky

11 years of experience
34 reviews
Ricky
11 years of experience
Mercedes-Benz R350 V6-3.5L - Ignition Coil - Gurnee, Illinois
Efficient and professional

Travis

13 years of experience
160 reviews
Travis
13 years of experience
Mercedes-Benz GL450 V8-4.6L - Ignition Coil Replacement - Charlotte, North Carolina
Travis was great!!! Not only did he come way before the time(appt. time was 1:30 he called and came @12). He was finished with my car in 15-20 min. Thanks Travis!!!

Corey

27 years of experience
43 reviews
Corey
27 years of experience
Mercedes-Benz GL450 V8-4.6L - Ignition Coil - Marietta, Georgia
Corey was fast and efficient with work that was needed to be done

Excellent Rating

(42)

Rating Summary
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Number of Mercedes-Benz Ignition Coil Replacement services completed
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