How To Replace A Fuse
When one electrical item stops working, a blown fuse is often the cause. Finding and replacing it takes a few minutes.
DifficultyEasy
TimeAbout 10 minutes
AreaBattery and electrical
What you need
- Spare fuses of the right ratingsOften supplied in the fuse box.
- Fuse pullerUsually clipped inside the fuse box cover.
- Owner’s manualShows the fuse layout.
Step by step
- Switch off the ignition and the itemAvoid working with the circuit live.
- Find the right fuseUse the diagram in the manual or on the cover.
- Pull the fuse outUse the puller.
- Check the fuseA blown blade fuse has a broken metal link inside.
- Fit a new fuse of the same ratingSame amperage, same type.Never use a higher rating or a wire bridge: it can cause a fire.
- Test the itemSwitch on and check that it works.
When to go to a workshop
If the new fuse blows again, there is a short circuit or a faulty component. Have the circuit checked rather than trying more fuses.
Questions about How To Replace A Fuse
Why do fuses blow?
Too much current, usually from a short or a failing motor.
Is a fuse box under the bonnet too?
Most cars have at least two: one in the engine bay and one inside.