Plug, Glow: Operation
WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The glow plugs are used to preheat the combustion chambers in order to achieve the ignition temperature required for the fuel-air mixture.
The heating element is integrated in the glow rod. It consists of a heating winding and a control winding connected in series.
The glow plug system is a quick start type. This allows for immediate start in practically all weather conditions without long periods of pre-glowing; this works in conjunction with the injectors.