View Full Version : On car interior lights what controls the delay in turning off after doors are closed
don_1
Jul 26, 2010, 02:24 AM
Coutesy lights, interior lights etc. in car do not turn off after doors are closed. What controls these?
KBC
Jul 26, 2010, 03:10 AM
On our's there is not only a dome light dimmer switch but also a dome light bypass button.Perhaps you have the bypass depressed and/or the dome light dimmer switch set to 'on' all the time,check those.
kitch428
Jul 26, 2010, 07:12 AM
What causes the delay is called a capacitor. Stored current that slowly releases.
Today's cars now have a BCM (body control module).
Stratmando
Jul 26, 2010, 08:12 AM
Here is 1 circuit:
Vehicle Interior Lighting With Switch-Off Delay Circuit Diagram (http://www.extremecircuits.net/2010/07/vehicle-interior-lighting-with-switch.html)
TxGreaseMonkey
Jul 26, 2010, 08:21 AM
In the diagram, C1 is the capacitor that kitch428 referred to.
Stratmando
Jul 26, 2010, 08:55 AM
Actually a Large capacitor across an LED by itself, can work. The additional components allow it to handle a larger load without draing down the capacitor.
don_1
Jul 30, 2010, 02:22 AM
On our's there is not only a dome light dimmer switch but also a dome light bypass button.Perhaps you have the bypass depressed and/or the dome light dimmer switch set to 'on' all the time,check those.
I had checked that,but thank you.
Stratmando
Jul 30, 2010, 05:03 AM
You could have a bad door switch.
I had a friend who had a Navigator and the interior lights stayed on, it didn't have pin switches, they were concealed in the door. It woud have been hard to determine as the light stayed on. I rolled down the windows and opened each door, and each but 1 had a small chime, the one that didn't was the bad door switch?
Stratmando
Jul 31, 2010, 08:01 AM
Your sentence cut off.
Even though on this vehicle lights don't go out till all door are closed, each individual door chimes individually, even though another door is open.
don_1
Aug 2, 2010, 03:13 AM
Biua
Stratmando
Aug 2, 2010, 06:54 AM
Biua? Buss Interface Unit, Audio?
What is BIUA?