There is a sensor in each door. You will have to find out which door sensor is defective. Check with your local dealer for the part, and he will be able to help you.
A bad starter can cause a Mercury Grand Marquis to not start. A bad alternator or a problem with the security system can be the cause for the car not starting.
i have no heat in my 1994 mercury grand marquis. what could cause the heat to stop working
it's your headlight switch
Have you tried turning the knob that turns your head lamps on? Sometimes that will turn your interior lights back on. Also, you might check the fuse box that is located under the dash on the drivers side, there may be a fuse blown.
Blown fuse.
There probably is only one cause for your interior lights to go on when you apply the brakes. There probably are brake light wires and interior wires that have warned together.
Most likely cause would be a blown fuse.
The shocks are there for a reason. Removing them would cause damage.
probably the fuse is blown.
Perhaps your timing.
Dead cell in the battery. Something on which is drawing power from the battery. Stuck relay.
ford van 2013 E250 inide lights wont work