Q: When to disconnect the battery during repair

asked by on

What kind of work requires the battery to be disconnected? Does replacing fuses require it?

No replacing fuses isn’t required. If you want to do any kind of serious electric work, it could be required because you don’t want to short out the power to your wiring system and have it go back to the computer and fry the computer. Say you’re going to change the alternator, first take one of the battery terminals off. Then you can’t short anything up. Say you’re working under the dash - I’ve seen more guys replacing the radio on their cars and then short something out and ruin the computer of the car. Anytime that you mess with electricity, it’s good to unplug a terminal and then do your work. But you don’t have to do it for just a fuse. The fuses are safety devices themselves anyway. If you want to have a fuse replacement done for you, a certified technician from YourMechanic can come to your location to perform the task.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. When to disconnect the battery during repair

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: After I changed the clutch in my 2001 Chevrolet Cavalier I do not have power to everything

Hi there. If everything was working prior to the replacement of the clutch then you need to first check the ground connections on the transmission and the block. If all of the electrical connections were checked then I would suspect...

Q: AC clutch fan relationship

The fan is kinda related, in that it is needed and commanded by the AC system to help cool the hot condenser. Its electrical circuit is separate from the AC electrical circuits. Definitely check the fuses first, then check...

Q: How to jump-start ford fiesta 2005 model. Where to connect negative cable?

Hello. In order to jump start a vehicle you should connect the negative cable to the negative battery terminal, and the positive cable to the positive battery terminal. Alternatively you may also ground the negative cable to any suitable ground...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...