Close
Q:

tranny does not shift at night with the lights on on 1993 Lexus LS400

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
why my transmission does not shift at night with the lights on?
(2) Answers
| |
check the wiring harness in your trunk hinge. open it up and check for bare/crossed wires. this is really common and
causes voltage "feedback" when the lights are on.
It sounds like perhaps a ground is bad but all electrical connections would have to be looked at to see if when the lights or other electrical loads are on is there a voltage drop due to bad connections or grounds.