Ron Oldschool Smith Posted February 18, 2017 Share Posted February 18, 2017 When I am driving forward my reverse light comes on when i apply the brakes and goes off when i take my foot off the brakes My Lexus LS 400 is a 1991 and has only 183,000 km totally verified km as the car was handed down from family members any ideas what could be the trouble? Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted February 19, 2017 Share Posted February 19, 2017 This may should strange but I absolutely guarantee you that there are cracked/broken wires in the wire harness that is attached to the left (driver side) trunk hinge. I had the same problem in a 1990 LS400 I used to have and many have had the same problem with the 1990 - 1994 LS400. The wires get broken/cracked as the trunk is opened over the years. What is amazing to me is that it took 26 years for this problem to show up in your car but maybe the trunk wasn't opened and closed as much as most. When this problem gets worse, the transmission starts not shifting properly. Unwrap the insulation from the wire harness at the left trunk hinge. It may not be obvious which wires are broken so you might have to "wiggle" each wire to determine where it broke. You may have to splice in small lengths of wire to repair the problem. Soldering is preferable but you might get by with using commercially available "butt" connectors for splicing in new wire lengths. The person who bought my 1990 LS400 in 2003 told me that he had to re-repair the wires over the years he owned the car. This probably did not occur on the 1995-up LS400. Quote Link to comment Share on other sites More sharing options...
sha4000 Posted February 19, 2017 Share Posted February 19, 2017 I agree it sounds like the famous trunk hinge wiring harness. Quote Link to comment Share on other sites More sharing options...
Ron Oldschool Smith Posted February 19, 2017 Author Share Posted February 19, 2017 Thanks it would seem to be the issue I will take it apart in the morning again thanks Ron Quote Link to comment Share on other sites More sharing options...
Ron Oldschool Smith Posted February 19, 2017 Author Share Posted February 19, 2017 Agin thats I open the trunk and found the white wire pulled it so slightly and it wasn't attached car is in tomorrow for a new coolant reservoir and my machanic will fix it for me . now if only we could clear up the power steering trouble Quote Link to comment Share on other sites More sharing options...
billydpowell Posted March 4, 2017 Share Posted March 4, 2017 quote: now if only we could clear up the power steering trouble... you can, you can.. just read up on PS repairs.. RIGHT HERE... its amazing what you can learn when you just READ... Like this Quote Quote Link to comment Share on other sites More sharing options...
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