Electrical fault FAQ
The following information has been put together as a general guide to common related issues to the designated fault. It is in no way meant to be used as an exact indicator for your fault, we would always recommend with any electrical fault that you book your car in with us so that our qualified technicians can perform a thorough inspection and analysis of the route cause.
Battery will not hold a charge for more than a few days
- Battery defective internally.
- Battery electrolyte level low.
- Battery terminal connections loose or corroded.
- Auxiliary drive belt worn - or incorrectly adjusted.
- Alternator not charging at correct output.
- Alternator or voltage regulator faulty.
- Short-circuit causing continual battery drain.
Ignition light fails to come on or remains illuminated with engine running
- Auxiliary drive belt broken, worn, or incorrectly adjusted.
- Alternator brushes worn, sticking, or dirty.
- Alternator brush springs weak or broken.
- Internal fault in alternator or voltage regulator.
- Broken, disconnected, or loose wiring in charging circuit.
- Warning light bulb blown.
- Broken, disconnected, or loose wiring in warning light circuit.
- Alternator faulty.
Lights inoperative
- Bulb blown.
- Corrosion of bulb or bulb holder contacts.
- Blown fuse.
- Faulty relay.
- Broken, loose, or disconnected wiring.
- Faulty switch.
Instrument readings inaccurate or erratic
Instrument readings increase with engine speed
- Faulty voltage regulator.
Fuel or temperature gauges give no reading
- Faulty gauge sender unit.
- Wiring open-circuit.
- Faulty gauge.
Fuel or temperature gauges give continuous maximum reading
- Faulty gauge sender unit.
- Wiring short-circuit.
- Faulty gauge.
Horn inoperative, or unsatisfactory in operation
- Horn contacts permanently bridged or horn push stuck down.
- Blown fuse.
- Cable or cable connections loose, broken or disconnected.
- Faulty horn.
- Horn mountings loose.
Windscreen/tailgate wipers inoperative or unsatisfactory in operation
- Wiper blades stuck to screen or linkage seized or binding.
- Blown fuse.
- Cable or cable connections loose, broken or disconnected.
- Faulty relay.
- Faulty wiper motor.
- Wiper arms incorrectly positioned on spindles.
- Excessive wear of wiper linkage.
- Wiper motor or linkage mountings loose or insecure.
- Wiper blade rubbers worn or perished.
- Wiper arm tension springs broken, or arm pivots seized.
Windscreen/tailgate washers inoperative,or unsatisfactory in operation
- One or more washer jets inoperative
- Blocked washer jet.
- Disconnected, kinked or restricted fluid hose.
- Insufficient fluid in washer reservoir
Washer pump fails to operate
- Broken or disconnected wiring or connections.
- Blown fuse.
- Faulty washer switch.
- Faulty washer pump.
Window glass will only move in one direction
- Faulty switch.
Window glass slow to move
- Regulator seized or damaged, or in need of lubrication.
- Door internal components or trim fouling regulator.
- Faulty motor.
Window glass fails to move
- Blown fuse.
- Faulty relay.
- Broken or disconnected wiring or connections.
- Faulty motor.
Central locking system inoperative, or unsatisfactory in operation
Complete system failure
- Blown fuse.
- Faulty relay.
- Broken or disconnected wiring or connections.
Latch locks but will not unlock,or unlocks but will not lock
- Faulty switch.
- Broken or disconnected latch operating rods or levers.
- Faulty relay.
One solenoid/motor fails to operate
- Broken or disconnected wiring or connections.
- Faulty solenoid/motor.
- Broken, binding or disconnected latch operating rods or levers.
- Fault in door latch.
