Ballast Resistor Replacement at your home or office.

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How much does Ballast Resistor 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.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2010 Volkswagen Passat $357 $251.82 $105.00 13% $413.07
2009 Volvo C70 $322 $251.82 $70.00 10% $359.32
2006 Volkswagen Passat $357 $251.82 $105.00 13% $413.07
2009 Nissan Maxima $373 $197.81 $175.00 20% $466.56
2013 Volvo C70 $322 $251.82 $70.00 10% $359.32
2006 Mercedes-Benz SL600 $338 $267.82 $70.00 9% $375.32
2011 Mercedes-Benz C350 $268 $197.81 $70.00 12% $305.31
2010 Mercedes-Benz B200 $338 $267.82 $70.00 9% $375.32
2006 Mercedes-Benz SL55 AMG $338 $267.82 $70.00 9% $375.32
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Ballast Resistor Replacement Service

What is the Ballast Resistor all about?

Modern ignition systems use electronic circuitry to control voltage during engine starting and operation, but it wasn’t always this way. Older vehicles with points and coils did not have the benefit of circuit boards and computers, so another way to control voltage was needed. The ballast resistor coil was the solution. Think of it as a giant fuse in a way, although it serves a much greater purpose.

The ballast resistor coil plays several roles in your engine and charging system. In terms of position, it’s located between the ignition switch and the positive battery cable. During engine operation, the ballast resistor is responsible for lowering voltage applied to the coil to ensure that it doesn’t overheat and burn out, or damage the battery. During cranking, the ballast resistor allows normal battery voltage into the coil to ensure a good, strong spark for starting the engine.

The ballast resistor is subjected to significant amounts of heat during operation (the resistor’s resistance level increases or decreases with the application of heat and voltage). Over time, it will eventually wear out and need to be replaced.

Keep in mind:

  • The ballast resistor is not inspected during normal maintenance.
  • The ballast resistor is subject to significant amounts of wear and tear.
  • Ballast resistors are not generally found on fuel-injected engines.

How it's done:

  • The Ballast Resistor is verified that it needs to be replaced. The battery and battery tray are removed.
  • The defective Ballast Resistor disconnected and removed.
  • The new Ballast Resistor is installed, secured, and connected.
  • The battery tray and battery are reinstalled. The Ballast Resistor is tested for operation.
  • The vehicle is tested to ensure proper operation of the Ballast Resistor and road tested to ensure fan operation.

Our recommendation:

Over time and through normal use, the ballast resistor is subject to a great deal of wear and tear, and heat. This can cause it to fail unexpectedly. When this happens, your vehicle will experience unwanted, and perhaps dangerous, operation. It may crank but then stop running immediately after. Have any starting problems immediately diagnosed by one of our expert mechanics.

What common symptoms indicate you may need to replace the Ballast Resistor?

  • Engine cranks, but dies immediately when the key is moved back to the run position from the start position

How important is this service?

Without a ballast resistor, your engine will not operate unless you jump the resistor, which is dangerous, as it will eventually burn out the points, and is not recommended. If your engine dies immediately after turning the key back to run from start, likely the ballast resistor needs to be replaced. If the engine runs with the key in the run position, you may have another issue. Have it properly diagnosed by one of our expert mechanics immediately.

Fast and easy Ballast Resistor Replacement service at your home or office.

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Recent Ballast Resistor Replacement reviews

Khoa

16 years of experience
161 reviews
Khoa
16 years of experience
I want to express my gratitude to my mechanic, khoa. He educated me about my problem in a manner that could not be matched by any other mechanic I've ever experienced. Service was excellent
2005 HONDA CIVIC - ALTERNATOR - CUPERTINO, CALIFORNIA

Mark

20 years of experience
50 reviews
Mark
20 years of experience
He was great. I'm disappointed in your company that you won't repair the problem. It didn't seem like that major a repair. I will never use you again nor will I recommend your company.
2000 LINCOLN TOWN CAR - CAR IS NOT STARTING - PALM HARBOR, FLORIDA

Frank

11 years of experience
23 reviews
Frank
11 years of experience
Well done. Much appreciated.
2000 CHEVROLET IMPALA - CAR RADIATOR REPLACEMENT - OSWEGO, ILLINOIS

Michael

10 years of experience
7 reviews
Michael
10 years of experience
Arrived on time. Performed a thorough diagnosis and recommended/performed only the required services. Very easy to work with.
2009 NISSAN ALTIMA - BRAKE PADS REPLACEMENT (REAR) - LIVINGSTON, NEW JERSEY

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