IF YOUR ENGINE OVERHEATS; Disconnecting The Jumper Cables; Do not run the booster vehicle engine above 2,000 rpm- Page 355

2018 Jeep Wrangler JK Owner Manual

Table of Contents

GETTING TO KNOW YOUR VEHICLE
GETTING TO KNOW YOUR INSTRUMENT PANEL
SAFETY
OCCUPANT RESTRAINT SYSTEMS
STARTING AND OPERATING
SERVICING AND MAINTENANCE
MULTIMEDIA
UCONNECT PHONE — IF EQUIPPED
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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.

6. Once the engine is started, remove the jumper cables in

the reverse sequence:

Disconnecting The Jumper Cables

1. Disconnect the negative

(-)

end of the jumper cable from

the engine ground of the vehicle with the discharged

battery.

2. Disconnect the opposite end of the negative

(-)

jumper

cable from the negative

(-)

post of the booster battery.

3. Disconnect the positive

(+)

end of the jumper cable from

the positive

(+)

post of the booster battery.

4. Disconnect the opposite end of the positive

(+)

jumper

cable from the remote positive

(+)

post of the discharged

vehicle.

5. Reinstall the protective cover over the remote positive

(+)

post of the discharged vehicle.

If frequent jump starting is required to start your vehicle

you should have the battery and charging system tested at

an authorized dealer.

CAUTION!

Accessories plugged into the vehicle power outlets
draw power from the vehicle’s battery, even when not
in use (i.e., cellular devices, etc.). Eventually, if plugged
in long enough without engine operation, the vehicle’s
battery will discharge sufficiently to degrade battery
life and/or prevent the engine from starting.

IF YOUR ENGINE OVERHEATS

In any of the following situations, you can reduce the

potential for overheating by taking the appropriate action.

On the highways — slow down.

In city traffic — while stopped, shift transmission into

NEUTRAL, but do not increase engine idle speed.

CAUTION!

Driving with a hot cooling system could damage your
vehicle. If the temperature gauge reads HOT (H), pull

(Continued)

7

IN CASE OF EMERGENCY

353

Detailed Information for 2018 Jeep Wrangler JK Owner Manual

Lists of information found in 2018 Jeep Wrangler JK Owner Manual - Page 355

  • 6. Once the engine is started, remove the jumper cables in the reverse sequence: Disconnecting The Jumper Cables 1.
  • 2. Disconnect the opposite end of the negative (-) jumper cable from the negative (-) post of the booster battery.
  • 3. Disconnect the positive (+) end of the jumper cable from the positive (+) post of the booster battery.
  • 4. Disconnect the opposite end of the positive (+) jumper cable from the remote positive (+) post of the discharged vehicle.
  • 5. Reinstall the protective cover over the remote positive (+) post of the discharged vehicle.
  • On the highways — slow down.
  • In city traffic — while stopped, shift transmission into NEUTRAL, but do not increase engine idle speed.

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