Jeep 2004 Grand Cherokee Owner's Manual page 134

134 UNDERSTANDING YOUR INSTRUMENT PANEL
21. Low Fuel Warning Light
When the fuel level reaches approximately 1.5 U.S.
Gallons (6L) this light will come on and remain on
until fuel is added. The "Low Fuel Warning Light"
may turn on and off again, especially during and after
hard braking, accelerations, or turns. This occurs due to
the shifting of the fuel in the tank.
Your vehicle has a programmable electronic feature that
will sound a chime when the "Low Fuel Warning Light"
comes on. See the information on "Overhead Console —
Customer Programmable Features" in Section 3 to turn
this feature on.
22. Fog Light Indicator Light
This light shows when the fog lamps are on.
23. Brake Warning Light
The red BRAKE warning light will come on when
the ignition is first turned on, and stay on briefly
as a bulb check. If the bulb does not come on
during starting, have the bulb repaired promptly. If the
light stays on longer, it may be an indication that the
parking brake has not been released.
If the light remains on when the parking brake is off, it
indicates a possible brake hydraulic system malfunction
or low fluid level. In this case, the light will remain on
until the cause is corrected. If a brake malfunction is
indicated, immediate repair is necessary and continued
operation of the vehicle in this condition is dangerous.