The dash lights will dim when the head lights come on. Check for a dimmer switch on your dash. It allows you to adjust the dash lights so they are not too bright and affect your nighttime vision. It may be set too low.
Have you checked the fuses?
The brightness of the odometer lights on a 2003 Buick Century is controlled by the instrument panel dimmer switch. This switch allows the driver to adjust the brightness of the dashboard lights, including the odometer, based on ambient light conditions. Additionally, the vehicle's headlight switch may also influence the brightness of the instrument panel lights when the headlights are activated.
If your 1986 Buick Century has no dash lights but the headlights are functioning, the issue may be related to the dashboard dimmer switch, a blown fuse, or a problem with the instrument cluster itself. First, check the dimmer switch to ensure it's not turned all the way down. Next, inspect the fuse box for any blown fuses related to the dashboard lighting. If those are fine, the problem may lie within the wiring or the instrument cluster, which may require further diagnosis.
they are photocells....they adjust the headlights from daytime lights to headlights when it gets dark out and vise-versa
What causes the dashboard light to stay on after your car has been turned off? 1994 Buick Century.
Where are the relay switches on a 1999 Buick Century for the headlights
The lights on your Buick could be out for a number of reasons. It could be blown fuses, faulty wiring, or dead bulbs. Your mechanic would be able to test this.
The 1996 Buick Century horn relay switch is located behind the dashboard. The relay switch will be on the drivers side of the dashboard.
will the dash lights work if we use a bcm out of a different 2002 buick rendezvousand put it in my 2002 buick rendezvous
In a 2003 Buick Rendezvous, the fuse for the dashboard lights is located in the fuse box under the dashboard on the driver's side. You can access the fuse box by removing the cover panel. Look for the specific fuse labeled for the instrument panel or dashboard lights; the owner's manual will provide the exact location and amperage. If the fuse is blown, replacing it should restore functionality to the dashboard lights.
Interior Lights thumbwheel is above the headlight switch on the left of the dash. Rotate the wheel all the way up to turn on the interior lights. Just past the highest dashboard light setting.
if you have the owners manual it tells you how to change (turn off) the auto lights on setting basically turn the light control knob