Alternator Failure
On Every UK Motorway

The alternator is the component that charges your vehicle's battery while the engine is running. When it fails, the battery is no longer being replenished, and once the stored charge runs out, the vehicle will stop completely. Warning signs include the battery warning light on the dashboard, dimming headlights, electrical accessories losing power, and eventually the engine cutting out as the ignition system loses power.

Our technicians are trained to diagnose charging system faults quickly and accurately. Using a multimeter and diagnostic equipment, they can determine whether the alternator itself has failed, whether the drive belt that turns the alternator has snapped or slipped, whether the voltage regulator is faulty, or whether there is a wiring issue between the alternator and battery. The diagnosis determines the appropriate course of action.

If the problem is a broken or worn drive belt, this can often be replaced at the roadside. Our technicians carry a selection of common drive belts and the tools needed to fit them. A drive belt replacement typically takes 15 to 30 minutes and gets you back on the road immediately. If the alternator itself has failed, this is a more involved repair that typically requires workshop facilities. In this case, our technician may be able to charge or jump start the battery to give you enough power to reach a nearby garage under your own power, or we will provide flatbed recovery to your chosen repair facility. We advise against driving long distances on battery power alone, as once the charge runs out, the vehicle will stop without warning, potentially in a dangerous location. Our alternator failure service is available around the clock and covers all vehicle makes and models.