Mercedes-Benz S450 Ignition Coil Replacement 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

(43)

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

(43)

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 $213 with $118 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2011 Mercedes-Benz S450V8-4.7LService typeIgnition Coil ReplacementEstimate$350.31Shop/Dealer Price$419.14 - $603.13
2009 Mercedes-Benz S450V8-4.7LService typeIgnition Coil ReplacementEstimate$330.31Shop/Dealer Price$399.16 - $583.16
2010 Mercedes-Benz S450V8-4.7LService typeIgnition Coil ReplacementEstimate$330.31Shop/Dealer Price$399.16 - $583.16
2008 Mercedes-Benz S450V8-4.7LService typeIgnition Coil ReplacementEstimate$330.31Shop/Dealer Price$399.14 - $583.12
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.

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

(43)

Rating Summary
41
0
0
0
2
41
0
0
0
2

Kenneth

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

Ricardo

14 years of experience
339 reviews
Ricardo
14 years of experience
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.

H

26 years of experience
828 reviews
H
26 years of experience
Mercedes-Benz GL450 V8-4.6L - Ignition Coil - Palo Alto, California
It was raining at appointment time, but he returned later during a small break in the rain to replace a cylinder coil and now my car runs great.

Tinashe

13 years of experience
605 reviews
Tinashe
13 years of experience
Mercedes-Benz CLS550 V8-5.5L - Ignition Coil - Atlanta, Georgia
Easy to talk to and explained what was going on in a way I can understand.

Excellent Rating

(43)

Rating Summary
41
0
0
0
2
41
0
0
0
2
Number of Mercedes-Benz Ignition Coil Replacement services completed
473+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How Long Does a Flex Coupling Steering Damper Last?
There There are a number of different components used in your vehicle to help control the amount of vibration you and your passengers feel as you're driving. One of those is the flex coupling-steering damper. Specifically this part tones down...
How to Get Your Car Title Reissued in a New State
One One thing to keep in mind while moving to another state is that you might be required to re-title your vehicle in your new state of residence. A vehicle title (https://www.yourmechanic.com/article/how-to-add-another-name-to-a-car-title-by-jason-unrau) is a legal document issued by the Department...
P0315 OBD-II Trouble Code: Crankshaft Position System Variation Not Learned
Trouble code P0315 means the crankshaft position system has a fault, often caused by faulty wiring or corroded sensor connector.

Cranks lots of times before starting

It sounds like your fuel pump is not working properly. The engine is not getting fuel if it has to crank that many times and still barely starts. I would recommend getting your fuel pressure tested by a certified mechanic...

Gas gauge isn't working. Sometimes the speedometer and the temperature gauge doesn't work. Limited lights around gauges and radio.

Hi There, It sounds like you have a faulty instrument cluster voltage regulator (https://www.yourmechanic.com/services/instrument-voltage-regulator-replacement) that may be causing the weak power source to the dash lights. The instrument voltage regulator regulates the voltage supplied to the various gauges in your...

Do ball joints that are sealed come pre greased since there's no way of greaseing them

Sealed ball joints that do not have a grease fitting are lubed for life and are not serviceable and you cannot lube them. These type of joints are greased from the factory and sealed.

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