Modern cars with key ignitions usually have four main positions: LOCK, ACC, ON, and START. Each performs a different function.

 1. LOCK (Off/Steering Locked)

• The engine is off.

• Steering wheel is locked for security (in most cars).

• Key can be inserted or removed only in this position.

• No electrical systems work except basic security systems.

 2. ACC (Accessories)

• Accessories receive power.

• You can use:

  • Radio

  • Power windows (in some cars)

  • Charging ports

• The engine remains off.

• Ideal for listening to music without starting the engine.

 3. ON (Ignition / Run position)

• Powers all electrical systems in the car.

• Dashboard lights illuminate for checks (ABS, oil pressure, battery, engine check, etc.).

• Engine is ready to run, but not yet cranked.

• When the engine is running, it returns to this position.

4. START

• This position engages the starter motor to crank the engine.

• You must hold the key in this position.

• Once the engine starts, the key automatically springs back to ON.

• Designed to be used briefly only.

Summary Table