User Manual - Page 264

For 2019 Grand Cherokee.

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Extreme Cold Weather (Below –22°F Or −30°C)
To ensure reliable starting at these temperatures, use of an
externally powered electric engine block heater (available
from an authorized dealer) is recommended.
Extended Park Starting
NOTE: Extended Park condition occurs when the vehicle
has not been started or driven for at least 30 days.
1. Install a battery charger or jumper cables to the battery
to ensure a full battery charge during the crank cycle.
2. Place the ignition to the START mode and release it
when the engine starts.
3. If the engine fails to start within 10 seconds, place the
ignition in the OFF mode, wait five seconds to allow the
starter to cool, then repeat the Extended Park Starting
procedure.
4. If the engine fails to start after eight attempts, allow the
starter to cool for at least 10 minutes, then repeat the
procedure.
CAUTION!
To prevent damage to the starter, do not crank continu-
ously for more than 10 seconds at a time. Wait 10 to 15
seconds before trying again.
If Engine Fails To Start
WARNING!
Never pour fuel or other flammable liquid into the
throttle body air inlet opening in an attempt to start
the vehicle. This could result in flash fire causing
serious personal injury.
Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic transmis-
sion cannot be started this way. Unburned fuel could
enter the catalytic converter and once the engine has
started, ignite and damage the converter and vehicle.
If the vehicle has a discharged battery, booster cables
may be used to obtain a start from a booster battery
or the battery in another vehicle. This type of start
can be dangerous if done improperly. Refer to “Jump
Starting Procedure” in “In Case Of Emergency” for
further information.
262 STARTING AND OPERATING
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