Electrical Faults in Wheelchairs, Found and Fixed Properly in Coventry

When someone says their wheelchair has an electrical fault, they usually mean one of a dozen different things: the chair flickers when it moves, cuts out on bumps, behaves erratically, smells hot, trips the house electrics while charging, or shows error codes that come and go. The variety is the point — "electrical fault" is a description, not a diagnosis, and the difference between a loose connector and a failing controller is the difference between a small bill and a large one. This page explains how we find out which is which.

The shape of an electrical fault

Powered wheelchair electrics form a chain: batteries, connections and fuses, the controller, the joystick and panel, the loom that runs between them, and the motors and brakes at the far end. A fault anywhere shows up as oddness somewhere else — a loose battery lead can make a controller behave as if the joystick has failed; a chafed loom can make the chair cut out on bumps. Erratic behaviour is the system reporting a problem it has noticed, and suppressing the symptom without finding the cause is how small faults become dead chairs.

How we diagnose it

We start with what you have observed, because patterns are evidence: does it happen on bumps, on acceleration, after an hour's use, in the rain, or randomly? Has anything been changed, spilled, exposed to weather or repaired recently? Then we test the chain with instruments, in order: batteries under load, connections and fuses, the charger's output, every connector and the loom at its flex points, then the joystick, controller and motors. We read any error codes against the manufacturer's documentation.

Where the fault is found — a corroded terminal, a chafed wire, a blown fuse, a failing connector — the repair is usually straightforward and same-visit. Where it points into the controller, a motor or a sealed drive unit, we quote for the repair with manufacturer-approved parts, confirming availability before promising anything. And where a fault refuses to show itself during the visit, we say so honestly rather than charging you for a guess; intermittent faults sometimes need a second look once they have developed further.

Faults we treat as urgent

Some symptoms mean stop using the chair until it is checked: any smell of burning, any scorching or melting you can see, tripping the house electrics when charging, a chair that behaves erratically in a way that could put the user at risk, or batteries that are swollen or leaking. These are not "wait and see" faults. If the chair failed or misbehaved while someone was seated and they were hurt or distressed, call 999 first — the chair can wait.

What you should not attempt

Do not open battery boxes, controller cases or motor housings; the voltages and stored energy in these systems are genuinely hazardous, and opening them can also destroy evidence we need. Do not use tape or insulation shortcuts on damaged wiring — a taped repair on a chair that carries a person is not a repair. Do not swap chargers, fuses or batteries for whatever is to hand, because mismatched components cause the very faults we are describing. Batteries, fuses and basic charging checks are the honest DIY territory; everything beyond that is engineer work.

Aftercare

Keep connections clean and dry, keep the loom away from pinch points, and report changes early — a chair that has started flickering is easier to fix this month than next. Note error codes when they appear; they are the most useful clue you can give us.

Booking

Tell us the make and model, describe the fault as precisely as you can — what happens, when, and anything that triggers it — and mention any codes, smells or noises. You pay a booking fee when you book, labour is hourly at a rate depending on how soon you need the visit, and the full cost is quoted and approved before work starts, with parts quoted separately.