99 lexus es300, lost only key
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=97171
Printed Date: May 12, 2025 at 11:05 AM
Topic: 99 lexus es300, lost only key
Posted By: hotttunes
Subject: 99 lexus es300, lost only key
Date Posted: September 16, 2007 at 12:36 PM
One of my assistant managers DESTROYED his ONLY Key chip trying to remove it for a remote start. Now the car cannot start. Lexus wants $1300.00 for a new ECU with 2 keys to replace it. Is there ANY way to bypass the key security or to program a new code and key to the original ECU? I am not that familiar with Lexus.
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Hotttunes - Bassman
Installer since 1976
Too many years experience
Cookeville, TN.
Professionally Installed With Pride
Anything worth doing is worth doing to the BEST of your ability!
Replies:
Posted By: KarTuneMan
Date Posted: September 16, 2007 at 1:23 PM
They "should" be able to program a new key for less than 150.00 (thats on the high side) Why the new ECM, I have no idea. Contact Chris Luongo, he's an expert on these types of situations. -------------
Posted By: init
Date Posted: September 16, 2007 at 6:23 PM
Sounds like bulldoodie. There's no way a lost/damaged key should require changing the ECU for $1300. They should be able to reprogram your existing ECU with new keys with their special equipment.
Posted By: hotttunes
Date Posted: September 16, 2007 at 10:10 PM
Well, I have been doing this since 1976 and realize they are feeding me manure about this because: #1 Most auto mechanics know very little about the electronics of the cars they work on. #2 They want to sell me a new unit. #3 I am an installer and they don't want to share any information. #4 For the most part I am smarter then they are. Now, do you have any information that can help? ------------- Hotttunes - Bassman
Installer since 1976
Too many years experience
Cookeville, TN.
Professionally Installed With Pride
Anything worth doing is worth doing to the BEST of your ability!
Posted By: JWorm
Date Posted: September 16, 2007 at 11:19 PM
I believe the dealership is correct. I have read that in the first couple years when Toyota/Lexus came out with the immobilzer key that if you lost all the keys there is no way to program a key to the ECU. Recent models have this fixed, but your coworker is going to have to replace the ECU.
Posted By: Chris Luongo
Date Posted: September 23, 2007 at 10:11 PM
1. From everything I've heard, the dealership is correct.
2. Toyota, and especially Lexus, are often very generous when it comes to these sorts of things. Contact a Lexus dealer, and see what they can do about getting the factory to authorize the repair.
My sister has a '99 RX300, and the engine failed. They call it the "sludge motor."
After a little research online about Toyota extending the warranty on this engine, and contacting the right Lexus dealer, she not only got a new engine installed for nothing, but a free loaner car too.
Posted By: hotttunes
Date Posted: September 24, 2007 at 4:13 PM
Well, thanks to everyone. As it turns out, A Locksmith in Knoxville, TN., REPROGRAMMED the ECU and made THREE KEYS for it for $ 500.00. He had to drive it in three circles and let it all reprogram the car but EVERYTHING is working fine. Y'all Have A Great Day! ------------- Hotttunes - Bassman
Installer since 1976
Too many years experience
Cookeville, TN.
Professionally Installed With Pride
Anything worth doing is worth doing to the BEST of your ability!
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