Jeep 2013 Wrangler - Owner Manual - Manual (Page 106)

Door Latches
Check for positive closing, latching, and locking.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
engine coolant, oil, or other fluid leaks. Also, if gasoline
fumes are detected or if fuel, power steering fluid, or
brake fluid leaks are suspected, the cause should be
located and corrected immediately.
104 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE