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Lexus LC500h Spark Plug Replacement at your home or office.

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Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Lexus LC500h Spark Plug Replacement is $313 with $159 for parts and $154 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2018 Lexus LC500hV6-3.5L HybridService typeSpark Plug ReplacementEstimate$489.10Shop/Dealer Price$572.71 - $814.63
2020 Lexus LC500hV6-3.5L HybridService typeSpark Plug ReplacementEstimate$479.19Shop/Dealer Price$560.86 - $801.32
2019 Lexus LC500hV6-3.5L HybridService typeSpark Plug ReplacementEstimate$479.19Shop/Dealer Price$560.88 - $801.37
2021 Lexus LC500hV6-3.5L HybridService typeSpark Plug ReplacementEstimate$479.19Shop/Dealer Price$560.88 - $801.36
Show example Lexus LC500h Spark Plug Replacement prices

What are spark plugs and how do they work?

Spark plugs are one of the key components of your vehicle’s ignition system. They ignite gasoline and air inside of your engine. This gives your engine the power to propel you down the road. The spark plug takes high voltage electricity from the ignition coil and creates a spark at just right moment during the engine’s combustion cycle. This gives the engine the best mix of power, fuel economy and low emissions. However, the electrode at the end of the spark plug eventually wears out and can cause performance issues.

Spark plugs-MATROX-1

When should you replace spark plugs?

Replacement should follow the vehicle maintenance schedule. This will be listed in the vehicle’s owner’s manual. Some cars require regular replacement at 30k, 60k or 100k miles. It is possible in some cases that a spark plug might fail before the service schedule, but it’s not typically common.

Avoiding spark plug replacement can cause:

  • Difficulty starting your car.
  • Check engine light for a misfire code.
  • Flashing check engine light during acceleration for misfire, this can cause engine damage.
  • Reduced fuel economy and/or power.
  • Rough idle and/or unexplained engine vibration.
  • Failed State emission testing.

Even if only one spark plug is found to be faulty, they should always be replaced in sets. Most engines will require 4,6, or 8 spark plugs.

How do mechanics replace spark plugs?

Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will:

  • Have the correct spark plugs on hand for your vehicle
  • Pull any diagnostic trouble codes that may be related to worn spark plugs.
  • Remove the original spark plugs and look at removed spark plugs for any clues indicating engine mis-operation exists; such as oil burning, excessively rich mixture, pre-ignition damage etc. Inform owner of any found unusual conditions.
  • Install new plugs using a torque wrench.
  • Finally, a road test of the vehicle to confirm normal operation.

Is it safe to drive with worn spark plugs?

Yes, but spark plugs that are worn enough to cause engine-misfiring have the potential to cause engine damage and overheating of the catalytic converter. Regardless of the age of the plugs, or mileage, if the engine misfires or runs poorly, the plugs should be inspected for defects. Generally, spark plug failure will not keep the engine from running, but in cases of extreme wear, you may experience a limitation in the speed at which you can drive the car. If the maintenance schedule says the plugs should be replaced, it is best to do so promptly.

When having spark plugs replaced keep in mind:

  • High-speed driving may accelerate spark plug wear. Consider earlier than required inspection and tune-up if you operate the car in severe conditions.
  • Plugs should always be promptly replaced per the manufacturer maintenance schedule even if they appear to be working perfectly.
  • If your vehicle is equipped with spark plug wires (as opposed to a coil-on-plug system), the wires should be replaced at the same time. This may increase the cost of your repair.
  • It is possible that when doing a spark plug replacement, your vehicle may also need additional parts like ignition coils, this will add to the repair cost.
  • Some engines require that the intake manifold be removed while replacing spark plugs. This may increase the parts and labor cost for the repair.
  • Leaking valve cover gaskets, which have let oil get in contact with the spark plugs, coils or wires, may be the cause of ignition system issues. Valve cover gaskets will need to be replaced in addition to the spark plugs, wires or coils. This will add to the repair cost.

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Number of Lexus Spark Plug Replacement services completed
1540+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
1100+
experts on our platform
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Meet some of our expert Lexus mechanics

Real customer reviews from Lexus owners like you.

Excellent Rating

(140)
Rating Summary
132
3
0
0
5
132
3
0
0
5

Cognac

21 years of experience
73 reviews
Request Cognac
Cognac
21 years of experience
Request Cognac
by john
Lexus LS400 V8-4.0L - Spark Plugs - Cordova, Tennessee
outstanding job. slow and methodical. keeps you informed of everything that he is doing. well prepared for the job.

Jason

18 years of experience
429 reviews
Request Jason
Jason
18 years of experience
Request Jason
by Shoaib
Lexus GS350 V6-3.5L - Spark Plugs - Morgan Hill, California
It was my first time using Your Mechanics and it won’t be the last because of Jason’s excellent service. Jason called me before the visit to recommend using a different brand of spark plugs to save a decent chunk of money (ngk vs denco). During his visit, I was in and out of the garage but while, Jason clearly explained what he was doing. Definitely not for everyone but I rather enjoyed learning about my own car instead of being completely in the dark during regular garage visits. There was a quirk in how my car readjusts idle control after the spark plugs are changed. Jason stuck around for an extra hour until he figured it out (answer: disconnect battery for 10min). I felt comfortable through out the process. Highly recommend Jason.

Theodore

17 years of experience
1794 reviews
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Theodore
17 years of experience
Request Theodore
by Kristen
Lexus IS250 V6-2.5L - Spark Plugs - Seattle, Washington
Theo was fantastic. I felt he took great care for my car & made me feel good about further work that needs to be done.

Jonathan

36 years of experience
522 reviews
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Jonathan
36 years of experience
Request Jonathan
by William
Lexus IS250 V6-2.5L - Spark Plug Replacement - Odessa, Florida
Arrived on time, well prepared, knowledgeable, and professional. I will ask for him again.

Excellent Rating

(140)
Rating Summary
132
3
0
0
5
132
3
0
0
5
Number of Lexus Spark Plug Replacement services completed
1540+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
1100+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

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