31
2008 IMPERIAL
DRIVING & SAFETY — 2
Battery Boost Switch:
The Battery Boost switch (located on the
driver’s console) engages a heavy-duty solenoid
to electrically connect the house batteries to the
chassis batteries in the event the engine will not
crank or cranks slowly. The solenoid is designed
for short-term high current intermittent use.
Engaging the boost solenoid for an extended
period will damage the solenoid.
Jump Starting Using Battery Boost Switch:
With the ignition key
OFF
, press and
hold the Battery Boost switch for ten
seconds. After ten seconds, continue to
hold the switch down and turn on the
ignition. The battery volt gauge on the
dash should read at least 12 Volts. If
voltage is suf
fi
cient, try to start the engine.
If the engine fails to crank or does not
crank fast enough, discontinue the
attempt. Continued attempts will only
diminish any remaining surface charge
in the chassis battery and end future
alternative attempts.
Next, start the generator. This may
require using the Battery Boost switch
for the generator to start from the
engine battery. Once the generator is
operating, the electrical combination
of the generator and the inverter will
charge the batteries.
Allow the generator to run
approximately ½ hour before
attempting to start the engine.
After ½ hour of generator operation,
leave the generator on and hold down
the Battery Boost switch for one minute.
Release the switch for one minute, then
press the switch again for one minute.
Alternate this cycle three to
fi
ve times.
Next, hold the switch down and turn the
ignition
ON
. The battery voltage gauge
on the dash should indicate at least 12
Volts. If voltage is suf
fi
cient with the
Boost switch held down, try to start the
engine.
If the engine fails to crank, or fails to
crank quickly, the chassis battery may be
depleted and the motorhome will require
jump-starting or an external charger
hooked to the chassis battery.
Jump-Starting Using an External Source:
When using jumper cables to start the
engine, the cables must connect in a parallel
configuration. That is, positive
(+)
to
positive and negative battery
(-)
to negative
chassis
(-)
. Always connect the positive
(+)
before connecting the negative
(-)
. To
prevent arcing when disconnecting the
cables; disconnect the negative
(-)
before
disconnecting the positive
(+)
.
WARNING:
Always ventilate the battery
compartment prior to any work or
service to the batteries. Gas emitted by
the batteries can explode when exposed
to smoking material, flames, sparks
or other sources of ignition, resulting
in injury or vehicle damage. Batteries
contain sulfuric acid that can burn skin,
eyes and clothing. DO NOT connect the
end of the second cable to the negative
(-) terminal of the battery to be jumped.
Connect only to the chassis, away from
the battery.
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