User Manual - Page 236

For 2020 JEEP WRANGLER.

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234 IN CASE OF EMERGENCY
1. Apply the parking brake, shift the automatic
transmission into PARK (P) (manual transmission in
NEUTRAL) and turn the ignition OFF.
2. Turn off the heater, radio, and all unnecessary
electrical accessories.
3. If using another vehicle to jump start the battery, park
the vehicle within the jumper cable’s reach, apply the
parking brake and make sure the ignition is OFF.
JUMP STARTING PROCEDURE
NOTE:
Make sure at all times that unused ends of jumper cables
are not contacting each other or either vehicle while
making connections.
Connecting The Jumper Cables
Jumper Cable Connections
1. Connect the positive
(+) end of the jumper cable to
the remote positive
(+)
post of the discharged
vehicle.
2. Connect the opposite end of the positive (+) jumper
cable to the positive
(+) post of the booster battery.
3. Connect the negative
(-) end of the jumper cable to
the negative
(-) post of the booster battery.
4. 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.
5. 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.
6. Once the engine is started, remove the jumper cables
in the reverse sequence.
WARNING!
Take care to avoid the radiator cooling fan whenever
the hood is raised. It can start anytime the ignition
switch is ON. You can be injured by moving fan
blades.
Remove any metal jewelry such as rings, watch
bands and bracelets that could make an inadvertent
electrical contact. You could be seriously injured.
Batteries contain sulfuric acid that can burn your
skin or eyes and generate hydrogen gas which is
flammable and explosive. Keep open flames or
sparks away from the battery.
WARNING!
Do not allow vehicles to touch each other as this could
establish a ground connection and personal injury
could result.
WARNING!
Failure to follow this jump starting procedure could
result in personal injury or property damage due to
battery explosion.
CAUTION!
Failure to follow these procedures could result in
damage to the charging system of the booster vehicle
or the discharged vehicle.
WARNING!
Do not connect the jumper cable to the negative
(-) post
of the discharged battery. The resulting electrical spark
could cause the battery to explode and could result in
personal injury. Only use the specific ground point, do
not use any other exposed metal parts.
CAUTION!
Do not run the booster vehicle engine above 2,000 rpm
since it provides no charging benefit, wastes fuel, and
can damage booster vehicle engine.
20_JL_OM_EN_USC_t.book Page 234
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