Cadillac catera 2001 User Manual

When you turn the key 
to START, this light will
come on briefly to show
that the generator and
battery charging systems 
are working.

If this light stays on, you need service and you should
take your vehicle to the dealer at once. To save the
battery until you get there, turn off all accessories.

You can read battery
voltage on the voltmeter. If
it reads less than 12 volts or
more than 16 volts while the
engine is running, and it
stays there, you may have a
problem with the electrical
charging system.

Have it checked right away. Driving with the voltmeter
reading in the lower warning zone could drain or
damage the battery. Driving with the voltmeter reading
in the upper warning zone could cause bulbs to burn out
(especially headlamp bulbs), various vehicle modules to
shut down (due to overload protection) and the
possibility of a battery acid leak.

If you idle the engine for a while, the voltmeter reading
might move into the red zone. If the reading stays in the
red zone while you are driving, you may have a problem
with the electrical charging system. Have it checked.
While the voltmeter reads in the red zone, the battery
may not be able to power certain electrical accessories,
like ABS. (If this happens, the ABS light will come on.
See “Anti

-

Lock Brakes System Warning Light” in 

this section.)

If you must drive a short distance with the voltmeter
reading in a warning zone, turn off all the accessories,
including the comfort controls and the audio system.