The glow plug indicator in a Jeep is usually located on the instrument cluster and will illuminate or flash if the computer detects that there is an issue with the glow plug system.
The glow plug symbol in a Jeep looks like a double looped coil and is yellow or orange in color. It transforms into a glow plug warning light if it takes the engine a long time to heat up and the light stays on for longer than 10 – 15 seconds
Glow plug; makes the engine easier to operate by heating the combustion chamber, which is cold during the first ignition of the vehicle
