SOURCE: lexus ls 400
www.alldata.com - it's $25 for a year-long subscription and gives you troubleshooting charts, parts diagrams, exploded diagrams of every system on the car, etc - it's an online factory service manual. Excellent resource that is well worth the small cost.
SOURCE: 1994 lexus ls 400 problem with dash board light
Try rotating the ignition switch slightly after you turn it to on and see if the lights come on...had the same problem and changed the switch fixed the problem...
SOURCE: i need to program a remote for my 1998 lexus ls 400
I think, for this problem you have to go to the dealer. There is a few things that they have to do @ the same time. Also, make sure that you bring all of your keys to make sure that they all work with the transponder,good luck...matty
SOURCE: my 1992 lexus ls 400 keeps stalling and idleis very low
Look for a small electric motor near the accelerator cable and near the top of the valve cover.
It's call IDLE AIR CONTROL (IAC) motor.
It's job is to increase the idle when load is added.
Example: turning on headlight,turning on AC.
Testing it is simple.
Warm up you car for 10 minutes.
Locate the IAC motor
turn on loads.....AC,headlights,etc
The motor should move the idle up
If the motor does not increase the RPM then it can be stick.
Try to give it few gentle taps to free up the gears.
It can be clean if your are up to it.
This electrical motor is very expensive. Please handle it with care.
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The other trouble spot are
old accelerator cable
TPS Throttle position sensor
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I will do a simple tune up and gas treatment before starting to replace any parts.
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