When I turn on the dome lights (either by the switch or by opening a door), they shut off after 5 seconds. This includes all dome lights. The same happens when I turn on the "cargo" light outside, over the bed of the truck. I understand that they should shut off when left on for a long time to conserve the batter, but 5 seconds is annoying. Are they controlled by some relay or is it something that is programmed in the computer?
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Re: Dome lights turn off too soon
I believe they are controlled by the BCM so that may be why they are shutting down too soon!!
either that or maybe your battery voltage is low, and when that happens the BCM or ECM will auto shut them off to conserve the battery!!
so go get your battery tested first!!!
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The following lamps may be manually turned ON by placing the interior lamp switch in the ON position, or by opening a door while the switch is in the AUTO position.
The dome lamp
The liftgate lamps
The courtesy lamp supply voltage circuit of the body control module (BCM) supplies battery positive voltage to the dome lamp, the liftgate lamps, and the map lamps. When any door is opened, the door jamb switch contacts close providing a door open input to the BCM. The BCM then provides a ground to the interior lamps with the switch in the AUTO position. The interior lamps receive a ground at G401 with the switch in the ON position.
Important: If the liftgate is opened after all the modules go to sleep, the dome light will not come on. The liftgate ajar switch input to the BCM will not wake up the BCM once it has gone to sleep, so the dome light will not come on. Once the BCM gets an input to wake it up, from remote keyless entry (RKE) or a door handle, the dome light will turn on when the liftgate is opened.
If the driver inadvertently leaves any interior lamp ON, the BCM will turn it OFF after a 20 minute time-out.
The courtesy lamps will turn OFF immediately if the ignition switch is turned to the ON position or approximately 20 seconds after all doors are closed.
The courtesy lamps are controlled by the body control module (BCM). Inputs from the dome lamp switch and the door ajar switches are monitored by the BCM. When a door ajar switch is closed, or the dome lamp switch is turned to the ON position, the BCM supplies the B+ for the courtesy lamps.
With out a factory Tech2 scan tool or equivalent an knowing how these systems work ,you best bet is to take your vehicle to the dealer or some other ASE certified repair shop !
Check the light switch on the dash and see if it is turned on for the dome light, if so turn it off and the dome light should go off. Check if the dome light it self has a on/off switch button on it. If this was not the problem, check the push button switch at each door by opening the door and holding the button in, if you have a delay light system on your car, you will have to hold the button in for awhile till it kicks the dome light off. If this did not fix the problem, remove each door switch and unplug the wire going to it, use a volt meter to check if the switch works on and off when you push the button in and out, if the switch is bad, replace it, you can buy them at a local auto parts store or dealer. If the switch was bad just leave the wire unpluged till you can replace it, this way the dome light should go out
I seem to be having the exact opposite problem. I have a 99 chevy blazer and the dome light will not turn off unless I push the override button in. The radio does turn off as soon as I turn off the ignition key. If I leave the dome override button out, the dome light will constantly stay on even while I am driving. It used to work fine. Every now and them it starts working properly, but it hasn't worked right for a long time now. I tested all the switches and they all seem ok. They rear hatch is also closed. Does anyone know what the problem can be and how to fix it?
Been having a problem with the dome lights on a 99 chevy blazer. Still can't figure out what the problem is. There is a dome light overide button located under the dimmer wheel. When I push the overide button in the dome light goes off, but when I open any of the doors the dome light will not come on. When the overide button is out the dome light stays on all the time and will not turn off even though every door is closed. I checked all the pushbuttons and everything tests good. Has anyone had this problem and know how to fix it?
Did you check the switch next to the interior light on the roof? Honda's have a switch position that turns off the dome light completely, so it won't work when the doors are opened or not shut tightly. There are 3 positions, dome light on all the time, dome light on only when door is opened, or ajar, and dome light off. I must say, I love Honda's, but I find this switch annoying!
If it has automatic or a domelight that stays on for a while after you shut the door is on a timer relay and that is probably getting bad. As far as the door ajar message there is a switch in the door jam, look and see if you see it. Take wd40 and try to soak the switch try to get it inside the switch.If its incorporated in the door latch spray back inside the door latch real good. Open and close the door several times and see if it works then.