If Your Engine Overheats - Jeep WRANGLER 2023 Owner's Manual

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CAUTION!
Make sure at all times that unused ends of jumper
cables are not contacting each other or either vehicle
while making connections. Failure to follow these pro-
cedures could result in damage to the charging sys-
tem of the booster vehicle or the discharged vehicle.
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.
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 dis-
charged 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 positive (+) post of the dis-
charged vehicle.
5. Reinstall the protective cover over the positive (+)
post of the discharged vehicle.
NOTE:
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

If the vehicle is overheating, it will need to be serviced
by an authorized dealer.
Potential signs of vehicle overheating:
Temperature gauge is at HOT (H)
Strong smell of coolant
White smoke coming from engine or exhaust
Coolant bottle coolant has bubbles present
WARNING!
You or others can be badly burned by hot engine cool-
ant (antifreeze) or steam from your radiator. If you
see or hear steam coming from under the hood, do
not open the hood until the radiator has had time to
cool. Never try to open a cooling system pressure cap
when the radiator or coolant bottle is hot.
IN CASE OF EMERGENCY
In the event it is observed that the temperature gauge
is moving towards or close to the HOT (H) position, you
can reduce the potential for overheating by taking the
appropriate action.
On the highways — slow down.
In city traffic — while stopped, place the transmis-
sion in NEUTRAL (N), but do not increase the engine
idle speed while preventing vehicle motion with the
brakes.
If your Air Conditioner (A/C) is on, turn it off. The A/C
system adds heat to the engine cooling system and
turning the A/C off can help remove this heat.
You can also turn the temperature control to maxi-
mum heat, the mode control to floor and the blower
control to high. This allows the heater core to act as
a supplement to the radiator and aids in removing
heat from the engine cooling system.
CAUTION!
Driving with a hot cooling system could damage your
vehicle. If the temperature gauge reads "H," pull over
and stop the vehicle. Idle the vehicle with the air con-
ditioner turned off until the pointer drops back into
the normal range. If the pointer remains on the "H"
and you hear continuous chimes, turn the engine off
immediately and call for service.
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