See also:

Power-Up
After switching the ignition key from OFF to either the ON or ACC position, or after a language change, you must wait at least fifteen seconds prior to using the system. ...

Control Setting Suggestions For Various Weather Conditions
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Wrangler in the Market
The Wrangler is Jeep's best-selling vehicle this year, but sales are plummeting. I suspect that's because more than two years of recession have produced a more practical car buyer who doesn't need ...