"Door Ajar" light won't go off. Interior lights staying on.

courtesy light switch , is door ajar switch an it's part of the door lock actuator . Light on coming on ? Not going off ? The ajar switch is a input to the GEM module , fords BCM - body control module . The GEM will energize a relay to turn on the lights .
The GEM will illuminate the interior lamps when any door is open or ajar. The interior lamps are; the dome lamp, the rear cargo lamp, the door courtesy lamp and the side rail lamps. The courtesy lamps will shut off when the doors are closed and the illuminated entry feature is not active or when the vehicle speed is greater than 5 mph (8 km/h). The interior lamps will not be reactivated until the vehicle speed is less than 3 mph (5 km/h) and a new door open warning lamp switch is received.
The GEM controls the interior lamps illuminated entry function by activating the interior lamp relay.
Mite be a good idea to have it check for DTC'S - diagnostic trouble codes .

B1322 Driver Door Ajar Circuit Short to Ground GEM GO to Pinpoint Test B . B1323 Door Ajar Lamp Circuit Failure GEM REFER to Section 413-01 . B1325 Door Ajar Lamp Circuit Short to Battery GEM REFER to Section 413-01 . B1330 Passenger Door Ajar Circuit Short to Ground GEM REFER to Section 417-02 . B1334 Decklid Ajar Rear Door Circuit Short to Ground GEM GO to Pinpoint Test C . B1338 Door Ajar RR Circuit Short to Ground

Is your 'door ajar' or 'dome light' staying on? Forum members suggest various methods that they fixed their issue. The methods include:

• Adjusting the dimmer

• Spraying the switch with a lubricant

• Replacing the switch

• Replacing the relay

door sensor is bad. switch is staying closed allowing juice to interior lights. The door switch is there. have autozone or napa look up the location for you...

its a bad door ajar switch. which one? you would need a scan tool. but the drivers door does get used more.....

your pin switch on the door frame ,may have dirt or rust held on with small screw remove the screw and lift out the pin switch try clean it first.

you have a faulty auto alarm system have to have it tested

the same thing happened to my car (2004 impala ss) yesterday aug 23, 2010 in the afternoon..... al palicz 732-904-3663

The door light and interior lights are staying on because one of your door switches needs to be replaced. The vehicle is sensing that a door is ajar and that will keep your interior lights on. This should not necessarily set the check engine light off however. I would believe that there is another issue setting off the check engine light. If there is a parts store in your area ask them if they can scan your vehicles check engine light, and if there is a charge. They will be able to retrieve a code that will explain the problem of your check engine light being on

the wire on the door latch make sure they are plugged in or unplug it and the light should go out if it does not then it's not that door

Try spraying WD-40 into the door latching mechanism (door side). I learned this fix after two battery replacements, but have only had to spray twice in the more than seven years of ownership