Extreme Cold Weather; (Below -20°F Or -29°C); If Engine Fails To Start - Jeep 2007 Wrangler Owner's Manual

252 STARTING AND OPERATING
Tip Start Feature — Automatic Transmission Only
Do not press the accelerator. Turn the ignition key briefly
to START position, and release it. The starter motor will
continue to run, but will automatically disengage itself
when the engine is running.
Ignition Key Positions
Extreme Cold Weather (below –20°F or –29°C)
To insure reliable starting at these temperatures, use of an
externally powered electric engine block heater (available
from your dealer) is recommended.

If Engine Fails to Start

If the engine fails to start after you have followed the
"Normal Starting" or "Extreme Cold Weather" proce-
dures, it may be flooded. Push the accelerator pedal all
the way to the floor and hold it there while cranking the
engine. This should clear any excess fuel in case the
engine is flooded.
CAUTION!
To prevent damage to the starter, do not crank the
engine for more than 15 seconds at a time. Wait 10 to
15 seconds before trying again.