RAM Dodge 2009 Owner's Manual page 237

21. Voltmeter
When the engine is running, the gauge indicates the
electrical system voltage. The pointer should stay within
the normal range if the battery is charged. If the pointer
moves to either extreme left or right and remains there
during normal driving, the electrical system should be
serviced.
NOTE:
• If the gauge pointer moves to either extreme of the
gauge, the "Check Gauges" indicator will illuminate
and a single chime will sound.
• The voltmeter may show a gauge fluctuation at vari-
ous engine temperatures. This cycling operation is
caused by the post-heat cycle of the intake manifold
heater system. The number of cycles and the length of
the cycling operation is controlled by the engine
UNDERSTANDING YOUR INSTRUMENT PANEL 235
control module. Post-heat operation can run for sev-
eral minutes, and then the electrical system and volt-
meter needle will stabilize.
22. Cargo Light
The cargo light will illuminate when the cargo
light is activated by pressing the cargo light
button on the headlight switch.
23. Brake Warning Light
This light monitors various brake functions,
including brake fluid level and parking brake
application. If the brake light turns on, it may
indicate that the parking brake is applied, that
the brake fluid level is low, or that there is a problem with
the Anti-lock Brake System reservoir.
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