greekguy

The bulb failure warning light in my 91 LS400 comes on in the dashboard a few seconds after I start the engine and remains on. I checked all the light bulbs and they are all fine. I can not find any burned ones. Anyone knows what is going on?

LOTC

Mine does that as well,but all of the bulbs are ok,I think it happens sometimes when it is hot outside.

roguenode

That was happening to my 90 LS. But it turned out my new sub was thumping the bulbs loose. I pushed the contact points a bit tighter and now all is well.

Might not be related, but either way, replacing the stock sub is a good idea.

retrodrive

Yeah, its all about contacts. You might have good bulbs, but wires disconnected. I would start checking from the break ed light that is connected yto your subwoofer grill. Masty job but works aight

greekguy

Thanks everybody. I checked out all the contacts and all the bulbs light up as they should. I am really confused. I should have mentioned that I have removed the stock stereo unit and have reolaced it with an aftermarket (Alpine) one. Is there any possibility that this may be causing the problem?

LOTC

no slim to none.