Mercedes-Benz 400SEL Ignition Cable (Spark plug wires) Replacement at your home or office.

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
How does YourMechanic work?    
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

Ignition Cable (Spark plug wires) Replacement Estimate for Mercedes-Benz 400SEL

Mercedes-Benz 400SEL Ignition Cable (Spark plug wires) Replacement costs $373 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$372 to $390
Labor: $126 -$144
Parts: $246
Average Dealer price
$660
Average Shop price
$457
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1993 Mercedes-Benz 400SELV8-4.2LService typeIgnition Cable (Spark plug wires) ReplacementYourMechanic Price$617.96Shop/Dealer Price$786.69 - $1189.96
Show example Mercedes-Benz 400SEL Ignition Cable (Spark plug wires) Replacement prices

Ignition Cable (Spark plug wires) Replacement Service & Cost

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.

Fast and easy Ignition Cable (Spark plug wires) Replacement service at your home or office.

GET A QUOTE FOR YOUR CAR
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.

659 reviews
Ben
37 years of experience
Ben did a great job in a timely manner and look forward to using him again on the next job!!!
2007 MERCEDES-BENZ E350 - BRAKE PADS REPLACEMENT (REAR)
511 reviews
Theodore
12 years of experience
Theodore was very knowledgeable. I called him in to look at my door lock problem and he was able to find out what the real issue was. In addition of that, he also spotted some damages under my door panel done by the car dealership where I bought my car, and also pointed out that the car battery that came with the car was half of the size of the factory one. I was really grateful to have him as my mechanic. He already saved me a fortune and I would recommend him to anyone that needs a helping hand. Good job Theodore!
2011 MERCEDES-BENZ GLK350 - DOOR DOES NOT LOCK OR OPEN INSPECTION
320 reviews
Stefan
13 years of experience
Stefan was thorough and professional. He explained his work on my car and told me things to look for in regards to preventative maintenance. I am very pleased with his work.
2002 MERCEDES-BENZ CLK320 - OIL CHANGE
126 reviews
Manuel
28 years of experience
great idea, great process, you are fine you have a great service
2010 MERCEDES-BENZ GLK350 - OIL CHANGE
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1993 Mercedes-Benz 400SELV8-4.2LService typeIgnition Cable (Spark plug wires) ReplacementYourMechanic Price$617.96Shop/Dealer Price$786.69 - $1189.96
Show example Mercedes-Benz 400SEL Ignition Cable (Spark plug wires) Replacement prices

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.

1-800-701-6230 · hi@yourmechanic.com