Main Relay Replacement at your home or office.

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How much does Main Relay (Computer/Fuel System) Replacement cost?

It depends on the type of car you drive and the auto repair shop you go to. Our mechanics are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office.

YourMechanic Price
$73 to $487
Labor: $70 -$88
Parts: $3 -$399
Average Dealer price
$99 to 900
Average Shop price
$87 to 590
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%
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ServiceYourMechanic PriceShop/Dealer Price
Fuel Pump Relay Replacement for 2001 Mitsubishi Montero Sport V6-3.5LYourMechanic Price$108.89Shop/Dealer Price$133.14 - $173.20
Fuel Pump Relay Replacement for 2003 Mazda 6 L4-2.3LYourMechanic Price$86.53Shop/Dealer Price$105.25 - $128.59
Fuel Pump Relay Replacement for 1991 Mazda MPV V6-3.0LYourMechanic Price$166.28Shop/Dealer Price$204.89 - $288.00
Fuel Pump Relay Replacement for 1985 Nissan 300ZX V6-3.0LYourMechanic Price$83.35Shop/Dealer Price$101.25 - $122.18
Fuel Pump Relay Replacement for 2002 Oldsmobile Silhouette V6-3.4LYourMechanic Price$84.59Shop/Dealer Price$102.77 - $124.62
Fuel Pump Relay Replacement for 2001 Volkswagen Passat L4-1.8L TurboYourMechanic Price$84.25Shop/Dealer Price$102.32 - $123.90
Fuel Pump Relay Replacement for 2009 Jeep Grand Cherokee V8-4.7LYourMechanic Price$92.13Shop/Dealer Price$112.27 - $139.83
Fuel Pump Relay Replacement for 1995 Chevrolet K1500 Suburban V8-5.7LYourMechanic Price$91.62Shop/Dealer Price$111.61 - $138.77
Show example Main Relay (Computer/Fuel System) Replacement prices

Main Relay (Computer/Fuel System) Replacement Service & Cost

What is the Main Relay (Computer/Fuel System) all about?

Relays play a significant role in controlling the various electronic components of your vehicle, and there are several that can be termed a “main” relay. However, when you speak of the vehicle’s main relay, you’re referring to the one that controls the computer and the fuel system. It’s the first thing to engage when you turn the ignition switch. Without an operable main relay, your car won’t run. On most makes and models, the main relay will be located in one of the underhood fuse boxes, but this varies from one manufacturer to another.

Keep in mind:

  • The main relay is absolutely essential to vehicle operation.
  • The relay is not inspected during routine maintenance and is designed to last for many years before needing replacement.
  • Many other problems have similar symptoms, so professional diagnosis is important.

How it's done:

  • The vehicle relay main panel is opened
  • The defective main relay is removed
  • The new main relay is installed
  • The vehicle main relay panel is closed
  • The vehicle is started and checked for operation

Our recommendation:

Without an operational main relay, your car will not operate. However, electrical problems can be complex, and the failure of the main relay could possibly be a symptom of an underlying problem. It’s important that our expert mechanics diagnose both the condition of the relay and any inherent causes that contributed to the relay’s premature failure.

What common symptoms indicate you may need to replace the Main Relay (Computer/Fuel System)?

  • Fuel pump does not engage when ignition is turned to “on”
  • Vehicle will not start
  • Vehicle will not start when engine is hot

How important is this service?

There are few components as crucial to vehicle operation as your main relay. It operates both the car’s computer and the fuel system. If you experience any problems similar to the symptoms above, we recommend having your vehicle diagnosed immediately.

Fast and easy Main Relay (Computer/Fuel System) Replacement service at your home or office.

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Meet some of our expert mechanics

Real customer reviews from owners like you.

344 reviews
Robert
26 years of experience
Quickly diagnosed a battery drain problem and promptly replaced the faulty brake switch. Spent time inspecting the car for any other problems. Generally a very good experience!
2002 FORD EXPLORER - BRAKE LIGHT SWITCH REPLACEMENT
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184 reviews
Tom
37 years of experience
Tom was excellent. He was friendly, precise and had exceptional knowledge. Very happy with his service!
2009 HONDA CIVIC - BRAKE SYSTEM FLUSH
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57 reviews
Dwight
27 years of experience
Dwight was very professional. I received several emails before my appointment, I received a text before my appointment and he called me while he was on his way. Everything went well.
2010 HYUNDAI SONATA - BRAKE SYSTEM FLUSH
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2 reviews
Brandon
13 years of experience
Brandon came out to diagnose my car issues. He was friendly and extremely helpful. Although he wasn't able to have his company fix the car for liability reasons he actually found someone that could do the work for me. So, even after leaving my residence, he was still working to help me in any possible way he could to resolve my car issues.
2003 CHRYSLER PT CRUISER - TRANSMISSION FLUID IS LEAKING INSPECTION
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Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%
Get a quote
ServiceYourMechanic PriceShop/Dealer Price
Fuel Pump Relay Replacement for 2001 Mitsubishi Montero Sport V6-3.5LYourMechanic Price$108.89Shop/Dealer Price$133.14 - $173.20
Fuel Pump Relay Replacement for 2003 Mazda 6 L4-2.3LYourMechanic Price$86.53Shop/Dealer Price$105.25 - $128.59
Fuel Pump Relay Replacement for 1991 Mazda MPV V6-3.0LYourMechanic Price$166.28Shop/Dealer Price$204.89 - $288.00
Fuel Pump Relay Replacement for 1985 Nissan 300ZX V6-3.0LYourMechanic Price$83.35Shop/Dealer Price$101.25 - $122.18
Fuel Pump Relay Replacement for 2002 Oldsmobile Silhouette V6-3.4LYourMechanic Price$84.59Shop/Dealer Price$102.77 - $124.62
Fuel Pump Relay Replacement for 2001 Volkswagen Passat L4-1.8L TurboYourMechanic Price$84.25Shop/Dealer Price$102.32 - $123.90
Fuel Pump Relay Replacement for 2009 Jeep Grand Cherokee V8-4.7LYourMechanic Price$92.13Shop/Dealer Price$112.27 - $139.83
Fuel Pump Relay Replacement for 1995 Chevrolet K1500 Suburban V8-5.7LYourMechanic Price$91.62Shop/Dealer Price$111.61 - $138.77
Show example Main Relay (Computer/Fuel System) 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