Starting and operating

Engine Block Heater — If Equipped

~1min read
1special tools

The engine block heater warms the engine, and permits quicker starts in cold weather. Connect the cord to a standard 110-115 Volt AC electrical outlet with a grounded, three-wire extension cord.

The engine block heater cord is located:

• 3.6L Engine – coiled and strapped to the engine oil dipstick tube.

• 5.7L Engine – bundled and fastened to the injector harness.

The engine block heater must be plugged in at least one hour to have an adequate warming effect on the engine.

Test yourself

A quick Jeep Grand Cherokee quiz: every answer comes with an explanation and a link to the manual page.