From Jeep:
GO ANYWHERE, DO ANYTHING
HILL START ASSIST (STANDARD)
Hill Start Assist helps drivers when starting a vehicle from a stop on a hill — by maintaining the level of brake pressure applied for a short period after the driver's foot is removed from the brake pedal. If throttle is not applied within a short period after the driver's foot is removed from the brake pedal, brake pressure will be released.
TOWING (OPTIONAL)
Wrangler Unlimited has a 3,500-pound max towing capability+ to pull everything from a folding camper to a small boat, motorcycle or snowmobile. The optional 3.73 axle ratio helps prevent gear hunting at highway speeds when towing. Available Trailer Sway Control+ (which automatically activates itself when needed) works with the Electronic Stability Control+ and the Antilock Brake System to reduce trailer sway and improve handling in adverse towing conditions.