Notices
LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

1993 LS400 Electrical Problems

 
Old 09-22-14, 01:45 PM
  #1  
txlex75154
Driver School Candidate
Thread Starter
 
Join Date: Sep 2014
Location: TX
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Default 1993 LS400 Electrical Problems

Ok, I have seen certain variations of electrical problems on the 1stGen LS400, but none that is exactly what I am experiencing. Hoping I can submit my problems to the gurus here and get a solution. Here goes:

At around the same time, the instrument display panel, telescoping steering wheel, and sunroof/windows all stopped working. The display panel will come on at random, but the windows/sunroof and steering wheel still don't function.

Has anyone else experienced all of these issues at once? I see a lot of info on the ECU capacitors needing to be replaced in order to solve the display panel issue, but would that solve the window issue also?

txlex75154 is offline  
Old 09-27-14, 06:10 AM
  #2  
hippystix
Driver School Candidate
 
hippystix's Avatar
 
Join Date: Sep 2014
Location: Missouri
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default yes

I am also experiencing some what of the same problem. I am such an idiot, I hook up my battery backwards and now my windows and instrument panel doesn't work. I was able to get the windows working, with fuse #13. I have not been able to get the instrument panel working. I will need to run more test.
hippystix is offline  
Old 09-27-14, 08:08 AM
  #3  
RugbyDad
Pole Position
 
RugbyDad's Avatar
 
Join Date: Jun 2014
Location: NY
Posts: 250
Likes: 0
Received 0 Likes on 0 Posts
Default

Check all fuses under the dash and under the hood.. Not just a visual inspection, sometimes there are really tiny breaks in the fuse and u can't see them with the naked eye..

If that's all good, check the trunk hinge wiring.. Sits on the drivers side near the tail lights if I'm not mistaken which I might b as I'm just relaying information I've read here on the forums..

The ecu caps should be replaced regardless of whether or not you think it's the culprit. I don't think they control the windows though.
RugbyDad is offline  

Thread Tools
Search this Thread
Quick Reply: 1993 LS400 Electrical Problems


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: