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Fuse #4 in the fuse panel behind the glove box is the one to remove to defeat the door switch (if you remove the doors). The interior lights will still operate by the light switch only. There is a graphic of this fuse panel attached to the back of glove box that you can see when the glove box is removed.
To access this fuse panel, lower the glove box and remove the retaining strap by sliding it to the right. The glove box can then be lowered enough to allow it to be removed. Reassemble in the opposite order.
It stays on
no it doesnt
The airbag light stays on when the computer has detected a malfunction and set a code. The light can not be reset until the failure is repaired.
The abs light stays on when a malfunction has been detected in the antilock braking system. The abs computer will have stored fault codes.
If the door is ajar and light stays on, spray some WD40 into the latch. The door switch is probably stuck. Spray all doors then open and close a few times.
bad door ajar switch inside one of the doors its in the striker assy
Either one of the door switches is broken or the dome light switch on the dash is turned on.
you may have a circuit or you can check your doors for any malfunctions
If you turn on your 1999 mustang v6 car and the right signal light stays on and doesn't blink and you switch the car off and then the left signal light stays on without blinking, then you need to see a mechanic.
you have a problem with a door switchor wiring concern. the light will go out after a longer than normal time because of the problem
Your flasher relay is shot and you need a new one.
Try spraying WD40 in the door latch.