2002 es300 lexus, would not start, changed the battery and still will not start. lights and horn works. Before battery was changed lights and horn worked but would not start. Someone suggested unlocking and locking the doors several times with key and then to leave the ignition on for about 10 minutes.

SOURCE: 1999 lexus es300

This has been happening to my car as well. It typically happens when your oxygen sensors start to wear out. Mine does it once in a while and I have the local auto store reset it. Go to your nearest auto store and have them tell you what code it is and ask them to reset the OBD so the light goes out. If the light comes on right away and the code has to do with your oxygen sensors, have them replaced. There are three, two are easy to replace, one takes some effort as it is in a tough to get to spot. The dealer will charge you a fortune to replace them so do it yourself or through a local mechanic. It is a very simple task other then the access.

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: CD player Error 3

dear,
I have different experiance with the C.Dplayer ( error 3 ) , there is no need to remove it nor send it to the dealer ,all you have to do when you have `` Error 3 `` is to reset the C.D player , by recycling the power supply ,this can be done by disconnecting the main car battery power supply , you must also keep the battery disconnected for at least one hour . then connect the cables to the batteries ,when you start the C.D player you will hear some clicking sound ,and watch the numbers of the C.D`s in the display you will find all what is inside has been detected by the display .
and your C.D player is back to normal..

i discovered ths by chance , when I had this error in the past ,coincidently I had to replace the battery and after installing the new batteries ,i was suprised to see the player back to normal condition by its self.

SOURCE: amplifier location 1993 lexus es300

My Son has a 95 es300, the amp for it is located under the front passenger seat. The easiest way to access it is to remove the 4 bolts holding the seat down, and remove the seat. Takes about 5 minutes

SOURCE: Doors won't lock with remote on my 2002 Lexus GS 300.

are you sure the battery is good in the remote? if so try putting the key in the driver door lock and locking and unlocking the doors three times in a row. if this dosent work i suggest taking it to an experienced lexus shop.