What does ACC mean on a car ignition UK?

ACC on a car ignition stands for "Accessory" mode. When you turn the key or press the start button to this position, it powers the car's electrical systems (like the radio, windscreen wipers, or infotainment) without starting the engine. This is useful for using accessories while parked.

In modern cars, ACC is often part of a multi-stage ignition system:

1. Off (Lock): No power to any systems.
2. ACC: Powers accessories only.
3. On (Ignition): Engages all electronics, including dashboard lights, ready for engine start.
4. Start: Cranks the engine.

Some vehicles, like the Ford Focus or Vauxhall Corsa, may combine ACC with other modes in keyless systems. Leaving ACC on for too long can drain the battery, so avoid prolonged use without the engine running.

ACC on a UK car's ignition switch stands for 'Accessory' position, which powers electrical accessories like the radio without activating the engine. This position is found between LOCK and ON in most modern vehicles including popular UK models like the Nissan Leaf and Vauxhall Corsa.

In UK vehicles, the standard ignition positions are:

1. LOCK: Steering wheel locks and key can be removed
2. ACC (Accessory): Powers infotainment and auxiliary systems
3. ON: Activates all electrical systems for driving
4. START: Engages the starter motor

Popular electric vehicles like the Tesla Model 3 and BMW iX use different power-up sequences, but traditional combustion engines from Ford and Vauxhall still use this system. When leaving your vehicle, never keep the key in ON position as this can drain your battery. The ACC position is useful for listening to the radio while parked without running the engine.