1999 Mercury Grand Marquis Q&A
1999 Mercury Grand Marquis Question: interior lights stay on
why do the interior lights in my 1999 mercury grand marquis suddenly stay on all the time. The head lights do not seem to come on for the auto lamp system either. - Visitor
Have headlight switch/dash dimmer switch circuits inspected. - raiderron
The interior lights are likely on due to a faulty door ajar switch. Have this system checked - the car may think a door is open, keeping your interior lights on. - DaveJHM
Your interior lights stay on because of a malfunction with the light module(cost $400.Ford has a better idea)wasn't it great when we had those switches in the door post that shut them off.I pulled the bulbs from the floor lights and the doom light.I'm going to find the wires for the dome light in the ceiling and put a toggle switch on it. - Visitor
while car is in garage, lights will come on and off intermittently,I have turned the autolamp to OFF position, but problem still occurs. What can be done? Must stay on for long periods too as batte...
My interior lights, radio and climate control all shutdown when the voltage spikes. As the RPM of the engine returns to the normal range, the everything usually works properly. Sometimes the ABS ...