Question about 1998 Buick Century

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Headlights will not shut off when engine is turned off

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I suspect the headlight relay has failed in the closed position. You should be able to buy a new headlight relay for around 10$ at a local auto-parts store. I'm not 100% sure where the relay box is located in a 1998 Buick. However, usually they're made out of black plastic and located in the engine compartment. Typically the box has a snap-on lid. Most of the time the relays are labeled, or there might be a diagram in your owners manual. Unplug the old headlight relay by hand and plug the new one in. I hope this advice helps you out.

Posted on Jan 04, 2011

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If your are turning your engine off before turning your headlights off, to turn them off - turn the headlights back on and then back off again. The headlights will turn off immediately.
However, if you are NOT turning off the engine before turning off the headlights, then this feature may be malfunctioning in the switch. To remedy this right away use the above procedure - turn back on then back off; until you can replace the malfunctioning switch.
Let me know if this helped, or if you have additional questions or information. Feel free to contact me at!
Again stated: these will normally turn off after 1-min.

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