See also:

Extreme Cold Weather (Below –20°F Or 29°C)
To ensure reliable starting at these temperatures, use of an externally powered electric engine block heater (available from your authorized dealer) is recommended. ...

INTERIOR
The Wrangler Unlimited is rugged, with an extra side of rugged, and its interior is sturdy and can take a beating. If you can't get those Freedom Top panels on in time to beat the rain, a little w ...

Overdrive Operation
The automatic transmission includes an electronically controlled Overdrive (fourth and fifth gears). The transmission will automatically shift into the Overdrive gear if the following conditions ...