Jeep Wrangler: INTRODUCTION / Symbols Key

If you do not read this entire Owner’s Manual, you may miss important
information. Observe all Cautions and Warnings.
Utility vehicles have a significantly higher rollover rate than other types
of
vehicles. This vehicle has a higher ground clearance and a higher center
of gravity than many passenger vehicles...
Other information:
Observe the following when the diesel engine is
operating:
All message center lights are off.
Malfunction Indicator Light (MIL) is off.
Engine Oil Pressure telltale is not illuminated.
Voltmeter operation.
The voltmeter may show a gauge fluctuation at
various engine temperatures...
The engine block heater is a resistance heater
installed in the water jacket of the engine. It
requires a 110–115 Volt AC electrical outlet
with a grounded, three-wire extension cord. Its
use is recommended for environments that
routinely fall below -10°F (-23°C)...