Question about 1991 Lexus LS 400

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I have a strange problem. When I turn on my headlights, my reverse lights comes on, and the transmission does not want to change. When I turn them off, I have no problem with the transmission. Sometimes when I am just driving along, the reverse light comes on, and the transmision will not change. Lately, when I press the brakes, the reverse light comes on. What is the problem?

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  • btea5503 Mar 23, 2011

    The reverse light I was speaking of, is the reverse indicator light in the console. Does the wire in the trunk hinge effect the transmission also?

  • btea5503 Mar 25, 2011

    Thanks, that got it! Thanks again!

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Welcome to Fixya

Most likely have broken wires in the driver side trunk hinge. Splice/solder in some new wire and tape it and the problem will most likely be fixed. It is an incredibly common problem with the gen 1 LS400.

Thank you for using Fixya!

Posted on Mar 23, 2011

  • Jose Cada
    Jose Cada Mar 23, 2011

    Yes. These wires are connected. Look for a wire bundle on the drivers side trunk hinge that flexes and breaks. this cause your reverse indicator to light up when the brake is applied and also feels like the transmission is disconecting or downshifting. Fix that wire, and your car will not **** anymore when touching the brake.

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