Mercedes-Benz 300SD Ignition Coil Replacement Costs

Car	Service	Estimate	Shop/Dealer Price
1992 Mercedes-Benz 300SDL6-3.4L Turbo Diesel	Service typeIgnition Coil Replacement	Estimate$1490.70	Shop/Dealer Price$1830.93 - $2837.43
1993 Mercedes-Benz 300SDL6-3.4L Turbo Diesel	Service typeIgnition Coil Replacement	Estimate$1583.88	Shop/Dealer Price$1923.26 - $2929.13

Car

Service

Estimate

Shop/Dealer Price

1992 Mercedes-Benz 300SDL6-3.4L Turbo Diesel

Service typeIgnition Coil Replacement

Estimate$1490.70

Shop/Dealer Price$1830.93 - $2837.43

1993 Mercedes-Benz 300SDL6-3.4L Turbo Diesel

Service typeIgnition Coil Replacement

Estimate$1583.88

Shop/Dealer Price$1923.26 - $2929.13

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.

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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Braxton

12 years of experience

205 reviews

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by Christine

Mercedes-Benz 300SD L5-3.0L Turbo Diesel - Car is not starting - Orlando, Florida

Very kind and helpful. Fast service and very courteous.

Trevor

23 years of experience

185 reviews

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by Bill

Mercedes-Benz 300SD L5-3.0L Turbo Diesel - Alternator Belt - Encinitas, California

Trevor showed up on time and had the work completed within the estimated time. Professional and friendly. I highly recommend Your Mechanic and Trevor. This was so easy, no up charges or surprises. I will use Your Mechanic for future auto services.

Rocco

302 reviews

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by Russell

Mercedes-Benz 300SD L5-3.0L Turbo Diesel - Brake Pads Replacement (Front) - Newport Beach, California

Rocco was fantastic!

Robert

32 years of experience

646 reviews

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by Kamsik

Mercedes-Benz 300SD L5-3.0L Turbo Diesel - Noise from engine or exhaust - Mountain View, California

Robert is good or even better than the other reviews. He does not only solve your problem but he ensures that your car is at its best before he leaves. He tries very hard to make your car perfect. When parts are not available he will try to make it. I regret very much not to hive him a tip when he left. It seems that Robert has a very busy schedule. Perhaps, his devotion to perfection takes extra time and make him a little bit late on schedule.

Mercedes-Benz 300SD 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 300SD Ignition Coil Replacement is $250 with $110 for parts and $140 for labor. Prices may vary depending on your location.

What is an ignition coil and how does it work?

When to consider replacing an ignition coil:

How do mechanics replace the ignition coil?

Is it safe to drive with an ignition coil problem?

When replacing an ignition coil keep in mind:

Meet some of our expert Mercedes-Benz mechanics

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Trevor

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Robert

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