Fuse & Relay Replacement
Also called fuse blown
A fuse blows to protect a circuit, and a relay is the switch that lets a small signal control a large current. Replacing a blown fuse is easy, but a fuse that blows again means there is a short circuit, and fitting a larger fuse to stop it blowing is how wiring fires start. We replace the fuse or relay and then find why it failed. Simply replacing them is not a repair when the underlying wiring fault is still present.
Signs you need this
- One or more electrical items have stopped working together
- A fuse blows again shortly after being replaced
- A relay clicks rapidly or does not click at all
- A burning smell or discoloured fuse holder in the fuse box
- Electrical faults that began after an accessory was installed
Not all of these have to be present, and one of them on its own can mean something else entirely. That is what the diagnosis is for.
What the job includes
- Correct rating fuse fitted, never a higher rating to stop it blowing
- Fuse boxes inspected for heat damage, corrosion and loose terminals
- Relay tested by substitution or by measuring coil and contact operation
- Circuit tested for a short to earth where a fuse has blown repeatedly
- Affected circuit function tested after the repair
- Advice if an aftermarket accessory is overloading the circuit
How we do it
Identify the circuit
The fuse chart for your model tells us exactly which components share the circuit, which narrows the fault quickly.
Inspect the box
The fuse box is checked for heat damage, corrosion and loose terminals, which cause faults on their own.
Test the relay
The relay is tested by swapping with an identical one or by measuring its coil and contacts under power.
Find why it blew
If the fuse blew rather than simply aged, the circuit is tested for a short before a new fuse goes in.
How we work
The same on every job, which is why we can write it down.
Diagnosis before quote
We find the fault first. A price given over the phone for a noise nobody has heard is a guess.
The price is agreed first
You approve the work and the cost before a spanner is picked up. Extra work means another call.
Parts you can check
We tell you whether a part is genuine, OEM, aftermarket or used, and what each one costs.
Old parts returned
Ask and we will hand back whatever we replaced. It is the simplest proof that the job was done.
Book fuse & relay replacement
Fill this in and a person will call you back to confirm the time and the price. Only your name and one way to reach you are required.
You send this
Takes a minute. No payment, no obligation.
We call you
To confirm the car, the time and the location.
Tell us the car and the symptom
We will arrange a mechanic at your location, or a slot at the nearest workshop. No payment until the price is agreed.