Question about Buick Cars & Trucks
The Lucerne is a 6 cylinder. I have owned the car for a year and not noticed this problem until recently. When car is turned off and I exit the car, the lights will eventually go off after several minutes (estimate 10 minutes).
An inadvertent power feature that supplies voltage to all interior lamps after the ignition is turned OFF. The inadvertent power feature will deactivate all interior lamps after 10 minutes to prevent battery rundown.
Courtesy Lamps Manual Operation
The courtesy lamps can be manually turned ON by the IP dimmer switch. When the dimmer switch is placed in the DOME position, ground from G304 is applied through the dimmer switch and the courtesy lamp switch ON signal circuit to the BCM indicating the courtesy lamps ON request. In response to this signal, the BCM then applies battery positive voltage from the CTSY/RF TRN fuse through the courtesy lamp supply voltage circuit illuminating the courtesy lamps listed above. The courtesy lamps ON operation of the dimmer switch will override any BCM operation of the interior lamps already in progress.
Do you have the dimmer switch placed in the DOME position ?
Posted on May 01, 2017
If the rear light on the other side goes on and off by pushing on the light then i would say the switch in the one that stays lit it either stuck or broken and may need to be replaced. i think you could stop by a body shop and they would be able to do it for less money that a Buick dealer would.
Posted on May 01, 2017
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Posted on Jan 02, 2017
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