MY PLUG FOR MY ALTERNATOR BROKE ON MY 1995 LEXUS LS 400

If you can,drive to Autozone,they can scan your Lexus and test your battery and alternator and tell you why that light is on,it's free and only takes a few minutes.

Sounds like a dead battery to me. You will probably need a new battery, a new alternator, or both.

check gear linkage,,may have just poped off?

I would inspect your wires at the starter. If you live up north then corrosion is bad, clean all wires going to starter. then clean wires to back of alternator. I seriously doubt that alternator is the problem, but if you remove it you can have it tested for free at most parts stores.

heater motor has a short in it createing a severe draw that takes voltage away from the igniton switch also if it has been doing this for a while? then you may have to replace or repair the plug on the ignition switch

Sounds like the belt broke.

this is best left to a professional front end shop, it requires expensive special tools, if u still want to do it let me know and I will give u the tools needed and instruction u need to proceed.

fan blower motor is under dash on passenger side.

MY LS-400 IS RUNNING HOT WHAT CAN I DO TO SOLVE THIS PROBLEM

in the frony under the hood on the passenber side at about the middle you will see it it have a belt that goes around it