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what do all the dash board warning lights mean on a1989 mercedes benz
Probably the dash fuse is blown, or the dimmer switch for the dash lights is bad!
Check for a loose ground wire - sounds like lights are backfeeding searching for ground
Which lights?
move the light knob counterclockwise and clockwise fastly
turn the little black knob to the right of the brake light on your dash clockwise
check the Bulbs
check the fuse for dash lights
Dash lights may have problems coming on because there is a problem with the dash fuse. It is important to get a specialist to check the wiring and the fuse status.
a fuse or fulty wiring the brake lights are useually out the same time as the dash lights if that helps any
Check the dimmer setting for the dash lights. There should be a dial to adjust the brightness on the dash to the left of the steering wheel.
You may have a blown fuse.