I have an old 1st generation LS400. It recently had some problems with the alternator so I got a new one and it worked for a couple weeks. But after these couple weeks my car won't start anymore and when it does all the lights pop up on the dash.
I got a new battery but the car still won't start. Now the radio or anything won't start up. I tried jumping it but the car still has all the precaution lights on the dash.
Is this a problem with the battery, connection, or is it the starter?
All help would be highly appreciated.

 

Sounds to me like your alternator has taken a sh%t again... the problem must be coming from your powersteering fluid leaking onto the alternator, which is the case 98% of the time with our 1LS. Do a search on a leaking powersteering pump/reservior for more info. If I remember its relatively an easy fix... I might as well tell u know to search before the others scold you for not searching first.