Mercedes-Benz E420 Ignition Cable (Spark plug wires) Replacement at your home or office.

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received a Ignition Cable (Spark plug wires) Replacement.
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$396.72 - $411.72

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Average rating from customers who
received a Ignition Cable (Spark plug wires) Replacement.
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Ignition Cable (Spark plug wires) Replacement Estimate for Mercedes-Benz E420

Mercedes-Benz E420 Ignition Cable (Spark plug wires) Replacement costs $405 on average.

CarServiceEstimateShop/Dealer Price
1994 Mercedes-Benz E420V8-4.2LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$680.95Shop/Dealer Price$850.24 - $1288.53
1995 Mercedes-Benz E420V8-4.2LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$680.95Shop/Dealer Price$850.39 - $1288.80
Show example Mercedes-Benz E420 Ignition Cable (Spark plug wires) Replacement prices

Ignition Cable (Spark plug wires) Replacement Service

What is the Ignition Cable (Spark plug wires) all about?

The ignition cables, also known as “spark plug wires” are part of the ignition system. They transfer the spark from the distributor or ignition coil to spark plugs that ignite the air-fuel mixture, starting the engine.

Over time, the cables can get weak and break down. This will make it harder for the spark to reach the engine cylinders, resulting in engine misfires. The car may not start at all. If one of the spark plugs has gone bad, the car will still start and run, but it will run poorly.

Keep in mind:

  • Ignition cable failure is often caused by other failing pieces in the ignition system; a mechanic should check for any other malfunctioning parts, and replace any parts of the system that don’t work.
  • Every time the ignition cables are replaced, the spark plugs should be inspected.
  • Leaking oil or coolant can cause ignition wire failure. If this is the case, the cause of the leak should be repaired or replaced, or else the new ignition wires will quickly be damaged as well.

How it's done:

  • Scan the computer system in the car for codes.
  • Inspect ignition cables (look for white spots).
  • Ohm test on individual cables.
  • Remove and replace the cables if found faulty.
  • Inspect the spark plugs.
  • Clear the codes.

Our recommendation:

Ignition wires should be replaced at least every 60,000 miles, but whenever your car is serviced, it’s a good idea to have the entire ignition system inspected. Any time that you have spark plugs replaced, it’s a good idea to have the ignition wires replaced as well. If you notice that your engine is running poorly, you should schedule an inspection.

What common symptoms indicate you may need to replace the Ignition Cable (Spark plug wires)?

  • Check Engine light is on.
  • Engine misfires.
  • Poor gas mileage.
  • Engine may shake (light vibration).

How important is this service?

The fuel in your automobile is ignited by a spark. This starts with the ignition coil, which transforms low voltage power into extremely high voltage. This high voltage is transferred through the ignition cables, and to the spark plug, where a spark is created that ignites the engine’s fuel, and powers the engine.

When one or more ignition cables fail, this voltage will not be transferred from the ignition coil to the spark plugs, and the fuel will not be ignited. Depending on how many of your ignition cables malfunction, your car will either run poorly, or won’t run at all.

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YourMechanic Mercedes-Benz E420 Service

Average Rating

4.5/5

Number of Reviews

15

Rating Summary
11
2
1
0
1
11
2
1
0
1

Sebastian

9 years of experience
2 reviews
Sebastian
9 years of experience
Mercedes-Benz E420 - Oil Change - Tampa, Florida
Sebastian was awesome. He was very talkative and engaging. Super sweet!

Jesus

15 years of experience
68 reviews
Jesus
15 years of experience
Mercedes-Benz E420 - Pre-purchase Car Inspection - Long Beach, California
I requested a pre purchase inspection for a car about 200 miles away from where I live. Jesus was on time, responsive, and very pleasant to work with. He kept me abreast of his inspection and provided me his professional feedback on the status of the vehicle. He followed up with a comprehensive and easy to understand report of his findings. Awsome service and awesome professional mechanic. Thank you.

Ben

40 years of experience
1147 reviews
Ben
40 years of experience
Mercedes-Benz E420 - AC Compressor - Houston, Texas
Friendly and professional. Even pointed out a few problems that another mechanic told me would be much more difficult to trouble shoot.

Tien

22 years of experience
903 reviews
Tien
22 years of experience
Mercedes-Benz E420 - Transmission Fluid Service - Berkeley, California
Prompt and competent.

Excellent Rating


YourMechanic Mercedes-Benz E420 Service

Average Rating

4.5/5

Number of Reviews

15

Rating Summary
11
2
1
0
1
11
2
1
0
1
Number of Mercedes-Benz E420 services completed
165+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
900+
experts on our platform

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