Door Ajar Warning Light indicates a door is open. This warning light will come on in red if a door is not securely closed. It will turn off when the door is securely closed. The Ajar switches can be found on the door panel of the vehicle body. If the door ajar warning indicator lights on the cluster, even if the door is closed, there might be a problem with the switch or the electrical wiring. You may try to check and retighten the screw on the ajar switch to inspect if it is working properly.