Mercedes-Benz S400 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

(8)

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

(8)

Ignition Coil Replacement Service

How much does a Ignition Coil Replacement cost?

On average, the cost for a Mercedes-Benz S400 Ignition Coil Replacement is $199 with $104 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2011 Mercedes-Benz S400V6-3.5L HybridService typeIgnition Coil ReplacementEstimate$322.15Shop/Dealer Price$391.44 - $559.94
2010 Mercedes-Benz S400V6-3.5L HybridService typeIgnition Coil ReplacementEstimate$302.15Shop/Dealer Price$371.47 - $539.99
2012 Mercedes-Benz S400V6-3.5L HybridService typeIgnition Coil ReplacementEstimate$302.15Shop/Dealer Price$371.47 - $539.99
2013 Mercedes-Benz S400V6-3.5L HybridService typeIgnition Coil ReplacementEstimate$302.15Shop/Dealer Price$371.43 - $539.92
Show example Mercedes-Benz S400 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

(8)

Rating Summary
8
0
0
0
0
8
0
0
0
0

Richard

20 years of experience
126 reviews
Richard
20 years of experience
Mercedes-Benz S400 V6-3.5L Hybrid - 110,000 Miles Maintenance Service - Weatherford, Texas
Very efficient and polite gentleman.. knew what he was doing.

Scott

36 years of experience
892 reviews
Scott
36 years of experience
Mercedes-Benz S400 V6-3.5L Hybrid - Check Engine Light is on - Chandler, Arizona
On time. Quick diagnostics.

Joe

23 years of experience
85 reviews
Joe
23 years of experience
Mercedes-Benz S400 V6-3.5L Hybrid - Auxiliary Battery Replacement - Fort Worth, Texas
Very polite. Knew what he was doing.

Attila

19 years of experience
884 reviews
Attila
19 years of experience
Mercedes-Benz S400 V6-3.5L Hybrid - Pre-purchase Car Inspection - Teterboro, New Jersey
Attila did a great job and called after it was completely inspected! Very professional and would here him again.

Excellent Rating

(8)

Rating Summary
8
0
0
0
0
8
0
0
0
0
Number of Mercedes-Benz S400 services completed
88+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1000+
experts on our platform

Recent articles & questions

How Can I Have the Vents Set to Cold Without the AC on?
The The modern automotive HVAC system offers a number of different capabilities to help keep drivers and passengers comfortable during hot or cold weather. There’s the air conditioning system, the heater, and the vent system (which doesn’t use either the...
Cell Phones and Texting: Distracted Driving Laws in Florida
Florida Florida defines distracted driving as anything that takes your mind off the road, hands off the wheel, or your eyes away from the road. Since 2012, distracted driving crashes have increased by 25 percent. Distractions Texting Reaching for a...
Disabled Driver Laws and Permits in Oregon
Residents Residents of Oregon who are disabled are entitled to obtain parking permits from the DMV in the State of Oregon. You can apply for placards, parking permits, and enjoy other privileges. The laws in the State of Oregon are...

Dome light unit fell down

The sun visor has no serviceable parts and would need to be replaced if it is unable to stay in its stowed position. If the mounting hardware on the dome light is damaged then the dome light assembly will need...

VVT vs VCT

Mike, we are happy to clarify. VVT (variable valve timing) is a general term for the system that keeps timing of the valves, and is typically designed to work with the camshaft. A VCT (variable cam timing) can be considered...

2000 Chrysler 300m will not start because of the anti theft system

You can refer to YourMechanic's instructions to de-activate the engine immobilizer system (https://www.yourmechanic.com/article/how-to-shut-off-the-anti-theft-device-in-your-car-by-jason-unrau). You should also consider the possibility of a weak battery, excessive voltage drop in the starter circuit due to poor electrical connections (be sure the ignition switch...

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