Ignition Positions - Chevrolet 2010 Impala Owner's Manual

Ignition Positions

To shift out of P (Park), the ignition must be in ON/RUN
and the brake pedal must be applied.
Notice: Using a tool to force the key to turn in the
ignition could cause damage to the switch or break
the key. Use the correct key, make sure it is all the
way in, and turn it only with your hand. If the key
cannot be turned by hand, see your dealer/retailer.
3-20
The ignition switch has
four different positions.
A (LOCK/OFF): This position locks the ignition. It also
locks the transmission. This is the only position in
which the ignition key can be inserted or removed.
The steering can bind with the wheels turned off center.
If this happens, move the steering wheel from left to
right while turning the key to ACC/ACCESSORY. If this
doesn't work, then the vehicle needs service.
B (ACC/ACCESSORY): This is the position in which
you can operate the radio and windshield wipers
while the engine is off. To use ACC/ACCESSORY,
turn the key clockwise.
C (ON/RUN): This position can be used to operate the
electrical accessories and to display some instrument
panel cluster warning and indicator lights. The switch
stays in this position when the engine is running.
If you leave the key in the ACC/ACCESSORY or
ON/RUN position with the engine off, the battery could
be drained. You may not be able to start the vehicle if the
battery is allowed to drain for an extended period of time.