Question about Mercury Sable
The switches are on the door jams on each door. spray a good lubricant on the door buttons, they may be sticking!! after spraying them push them a few times by hand to help them a bit. if one needs replaced just take out door switch, do not let wires fall back in door jam. take the wires off the switch, then the switch that is bad it will turn dome light off. sometimes the door switches go bad and makes contact inside switch and makes dome light stay on. try spraying them first. have a good day!! there may be one or more bad switches. check dome light and see if switch is stuck on.
Posted on Nov 13, 2010
It's probably one of the switches in the doors. Have someone walk around the car and push in on each door to see if the ajar light will go out. If it does, the door may just need to be adjusted to close tighter. If it doesn't, you may need to pull the switches out to see if one is bad.
The interior lights are controlled by a combination of door switches and manual switches. There is usually a centralized controller that receives ground signals from switches in each door, when opened. If any of the switches sends a ground signal, the controller turns on the lights. Any given light may also have a manual switch that can turn the light on and perhaps off, though there are usually some lights that cannot be turned off without closing all doors. Many controllers incorporate a delay and perhaps also a dimmer to allow the light to continue for some time after the last door is closed.
If not that, the most likely cause is one of the door switches stuck on (closed). This can be caused by a failure of the switch or a consequence of the door lock being adjusted too loose. A good test for this is to have someone go around the car and push in on each door to see if one of them will turn the light off. Any door that can turn the light off when pushed must have it's lock adjusted in tighter. If this test doesn't fix it, check the individual switches. If you can locate the switches, pull them out of the car body. If the lights go out, the switch is bad. In case the switch has two wires rather than one, pulling the connector off the switch should have the same effect. Test each switch in this way. If you have all switches disabled and the lights are still on, the problem is likely to be either one of the switch wires grounding out to the car body or the interior lights control module shorted on.
Posted on Nov 13, 2010
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Posted on Jan 02, 2017
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Jul 16, 2018 | Mercury Cars & Trucks
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