Jeep 2012 Wrangler Unlimited - User Guide - Manual (Page 96)

• Connect the opposite end of the positive (+) jumper cable to the positive
(+) post of the booster battery.
• Connect the negative end (-) of the jumper cable to the negative (-) post
of the booster battery.
• Connect the opposite end of the negative (-) jumper cable to a good
engine ground (exposed metal part of the discharged vehicle’s engine)
away from the battery and the fuel injection system.
• Start the engine in the vehicle that has the booster battery, let the engine
idle a few minutes, and then start the engine in the vehicle with the
discharged battery.
Once the engine is started, remove the jumper cables in the reverse
sequence:
• Disconnect the negative (-) jumper cable from the engine ground of the
vehicle with the discharged battery.
• Disconnect the negative end (-) of the jumper cable from the negative
(-) post of the booster battery.
• Disconnect the opposite end of the positive (+) jumper cable from the
positive (+) post of the booster battery.
• Disconnect the positive (+) end of the jumper cable from the positive (+)
post of the discharged vehicle.
• If frequent jump-starting is required to start your vehicle you should have
the battery and charging system inspected at your authorized dealer.
CAUTION!
• Do not use a portable battery booster pack or any other booster
source with a system voltage greater than 12 Volts or damage to the
battery, starter motor, alternator or electrical system may occur.
• Failure to follow these procedures could result in damage to the
charging system of the booster vehicle or the discharged vehicle.
• Accessories that can be plugged into the vehicle power outlets
draw power from the vehicle’s battery, even when not in use (i.e.,
cellular phones, etc.). Eventually, if plugged in long enough, the
vehicle’s battery will discharge sufficiently to degrade battery life
and/or prevent the engine from starting.
WARNING!
• When temperatures are below the freezing point, electrolyte in a
discharged battery may freeze. Do not attempt jump-starting
because the battery could rupture or explode and cause personal
injury. Battery temperature must be brought above freezing point
before attempting a jump-start.
(Continued)
WHAT TO DO IN EMERGENCIES
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