New Key
Thread Starter
Driver School Candidate
Joined: Jul 2018
Posts: 3
Likes: 0
From: id
New Key
I’ve lost my only key for my 2001 Lexus LS 430–awesome I know. What’s the best & cheapest solution? I’ve seen online keys w/ the buttons (brain) but does the dealership have to program it?
Lexus Champion
Joined: Mar 2011
Posts: 2,186
Likes: 728
From: Texas
Welcome to the forum. Please take a look at Post #9 and Post #11 on the link below...
https://www.clublexus.com/forums/ls-...ansponder.html
https://www.clublexus.com/forums/ls-...ansponder.html
Intermediate
Joined: May 2018
Posts: 444
Likes: 74
From: OR
I was under the impression that you'd have to replace the ECM with a new one that had keys already matched up to it if you lost your one-and-only key. Something about the unique security code in the ECU/immobilizer not being able to be "read" and programmed into a new key unless you had a key already programmed to the car to "copy" it from. I can't remember if I was told this only about my '04 because it had a smart key, or if it applied to all models.
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