BMW 540i Ignition Coil Replacement Costs

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Ignition Coil Replacement Service

How much does a Ignition Coil Replacement cost?

On average, the cost for a BMW 540i Ignition Coil Replacement is $560 with $420 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1998 BMW 540iV8-4.4L	Service typeIgnition Coil Replacement	Estimate$1057.00	Shop/Dealer Price$1275.82 - $1912.44
2003 BMW 540iV8-4.4L	Service typeIgnition Coil Replacement	Estimate$1044.39	Shop/Dealer Price$1258.88 - $1892.25
1997 BMW 540iV8-4.4L	Service typeIgnition Coil Replacement	Estimate$1044.39	Shop/Dealer Price$1258.94 - $1892.36
2000 BMW 540iV8-4.4L	Service typeIgnition Coil Replacement	Estimate$1044.39	Shop/Dealer Price$1258.94 - $1892.35
1999 BMW 540iV8-4.4L	Service typeIgnition Coil Replacement	Estimate$1044.39	Shop/Dealer Price$1262.55 - $1898.67
2002 BMW 540iV8-4.4L	Service typeIgnition Coil Replacement	Estimate$1044.39	Shop/Dealer Price$1259.28 - $1892.95
1994 BMW 540iV8-4.0L	Service typeIgnition Coil Replacement	Estimate$2084.87	Shop/Dealer Price$2572.87 - $4029.49
1995 BMW 540iV8-4.0L	Service typeIgnition Coil Replacement	Estimate$2084.87	Shop/Dealer Price$2572.84 - $4029.44

Show example BMW 540i 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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Petar

8 years of experience

21 reviews

Petar

8 years of experience

by Earl

BMW 540i V8-4.0L - Control Arm Assembly Replacement (Front Lower Left, Front Lower Right) - Auburn, Washington

Petar had some challenges with parts that were seized within my suspension. He was able to come up with ideas to work through those issues within my vehicles components. After realizing he needed more time to work out the issues, he made adjustments to his schedule toward a better repair outcome. I deeply appreciate his reliability, advice, and commitment to complete the task. Great job Petar!

Tom

43 years of experience

205 reviews

Tom

43 years of experience

by Baljinder

BMW 540i V8-4.4L - Window Motor / Regulator Assembly Replacement (Driver Side Front) - Campbell, California

Yourmechanic.com is awesome! It was so simple to get on their website, tell me exactly what I needed done and get an instant quote. I got an excellent price, the mechanic Tom came to my home on time, was very friendly and fixed the window on my BMW. Tom is the best! I will ABSOLUTELY use them again and refer them to everybody I know. I am a very satisfied customer!

Trung

13 years of experience

412 reviews

Trung

13 years of experience

by Daniel

BMW 540i V8-4.4L - Oil Change - San Jose, California

Real nice guy!

Ruben

15 years of experience

86 reviews

Ruben

15 years of experience

by Ravi

BMW 540i V8-4.4L - Car will not turn over - Los Angeles, California

This guy is really honest!! I actually had an issue with Battery but a 3rd party guy told me that there is an issue with my alternator. I used yourmechanic and requested Ruben to fix my Alternator. Instead of blindly replacing the alternator, he performed some checks and found out that my car battery was BAD. Thanks Ruben! Appreciate it.

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