1999 Lexus ES300

check the owners manual

Hi Susie, Turn on the head lights and get someone to observe them while trying to start. If they dim during trying to start, replace the battery. Regards John

You can check this website, you find there fuse box diagram and description for Lexus ES300


Lexus ES300 1999 fuse box diagram Auto Genius

Lexus ES300 2002 2003 fuse box diagram Auto Genius

SEC stands for security, the radio is in theft lock you must enter the unique code security that came with the car when new to unlock the radio, this SEC is triggered whenever the radio losses power like a theft or a battery disconnect. If you don't have this unique code you must see the Lexus dealer, they can look it up in the factory information link, it goes by the serial number of the radio and the VIN or the car.

circuit city best buy radio shack

is the battry charged???

cant be repaired.

http://highlanderclub.ru/files/manual/04/212fi/cib2795.pdf

This is a useful link on the code difinition, what it looks like is that the new ECM has a specific key code from the original car, there is a procedure for this issue, either you get new keys made from Lexus/Toyota or find out how to erase the code in the ECM, this code is why the eng won't start, I have no Lexus manuals at home nor does FixYa.com, at this point I would try to get the info from alldata.com, but it is a pay site, unlike this site which is free, and by the way I'm not employed by FixYa.com, just trying to help on my own time, I am a retired techincian.

go to Lexus dealer , with VIN and invoice