SOURCE: my 1991 lexus ls400
The most likely problem is your alternator, the alternator charges your battery while the engine is running, if the alternator is bad you have a dead battery, but you can check with a volt meter to ensure that is your problem. Start your car (use a battery charger or jump to start it if you need to) and put your meter on the battery post's. If your reading 13volts or so your alternator is working and maintaing voltage, however if your reading starts dropping to 10 or less(may take a few moments to drop) then it's probably your alternator. You can also check your battery's voltage before starting your vechile, if the voltage increases after you start the vechile then it seem to be charging. Alternators can be repalced somewhat easily, it's only two boltsm however you do have to remove the fan belt, and re-route after installing the new alternator. If you have some expirence working on cars you can do this yourself in your driveway.
Good luck
Here's a start for you, hope this helps
SOURCE: The Lexus car remote key control model ES300
try this:
1. Start with key out of ignition, drivers door is open all others closed and
drivers door is unlocked.
2. Insert key into the ignition (DO NOT Turn) and Pull key out.
3. Perform these steps within 40 seconds.
A. Using the power lock switch on the drivers door, perform 5 lock/unlock cycles
starting with lock. Use an even pace and try to go about one cycle per second.
(1Cycle = 1 lock and 1 unlock).
B. Close, then open drivers door.
4. Perform these steps within 40 seconds.
A. Using the power lock switch on the drivers door, perform 5 lock/unlock cycles
starting with lock. Use an even pace and try to go about one cycle per second.
(1Cycle = 1 lock and 1 unlock).
B. Insert the key in the ignition cylinder.
C. Turn the ignition to ON (Do NOT Start) then back to OFF.
D. Remove the key from the ignition.
5. Press any button on remote for a minimum of 1 second.
System should now lock and unlock doors once.
6. Close and open drivers door.
7. Press any button on remote for a minimum of 1 second. System should now lock and
unlock doors. Once to confirm programming, twice to indicate programming failed.
8. Repeat steps 5, 6 and 7 for additional remotes.
SOURCE: R & R 1991 Lexus Ls400 Gear shift knob
slide the lower part of shifter handle down and you will find two screws, but there is 2 wires coming in from center console for overdrive button.you have to remove the center console cover and remove the 2 wires from connector and then pull up threw handle.when you go back together you will have to guide them back threw the handle.
SOURCE: Replace/fix starter on 1991 Lexus LS400
Not too bad. Not much room, just enough to drop the starter. It is probably easier to go up through exhaust if you can get your exhaust shield off the manifold .
SOURCE: My lexus ES 300 (97) wont start. When I tried to
your battery is dead!! Even if jumped, if the battery is dead celled it will not have sufficient power to crank. Dead celled batteries will hold a charge momentarily then slowly die again. I recommend temporarily swapping a battery from another vehicle to try and start your ES300. This is to make sure it isnt the starter or alternator thats the problem. To test the alternator, use a voltmeter at the battery terminals (w/car started and running) to check voltage should be (13.5-14.5 volts). If you do not have a voltmeter,(old school way) simply start the car, while engine running pull the positive terminal off the battery(make sure NOT to ground the positive terminal). If the vehicle dies, possible alternator or alt circuit failure. Bring it to autozone or advance auto to test for free. Hopefully this helps...please rate...thanks
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