Jeep grand cherokee Owner's Manual page 304

302 UNDERSTANDING YOUR INSTRUMENT PANEL
• Charging System Light
This light shows the status of the electrical charging
system. If the light stays on or comes on while
driving, turn off some of the vehicle's non-essential elec-
trical devices or increase engine speed (if at idle). If the
charging system light remains on, it means that the vehicle
is experiencing a problem with the charging system. Obtain
SERVICE IMMEDIATELY. See an authorized dealer.
If jump starting is required, refer to "Jump Starting
Procedures" in "What To Do In Emergencies."
• Electronic Throttle Control (ETC) Light
This light informs you of a problem with the
Electronic Throttle Control (ETC) system. The
light will come on when the ignition is first
turned ON and remain on briefly as a bulb
check. If the light does not come on during starting, have
the system checked by an authorized dealer.
If a problem is detected, the light will come on while the
engine is running. Cycle the ignition key when the
vehicle has completely stopped and the gear selector is
placed in the PARK position. The light should turn off.
If the light remains lit with the engine running, your
vehicle will usually be drivable. However, see an autho-
rized dealer for service as soon as possible. If the light is
flashing when the engine is running, immediate service is
required. You may experience reduced performance, an
elevated/rough idle or engine stall and your vehicle may
require towing.
• Engine Temperature Warning Light
This light warns of an overheated engine condition.
As temperatures rise and the gauge approaches H,
this indicator will illuminate, and a single chime will sound
after reaching a set threshold. Further overheating will
cause the temperature gauge to pass H, a continuous chime
will occur until the engine is allowed to cool.