IslanderGX470

Thank you Dave for your response. I went through these steps: 1) The key is the correct key. I tried all three keys - master, valet and flat key with chip transponder in the case 2) I tried this and it still just clicks when I try to start it. 3) I just had major repairs done the day prior, but everything worked fine until I tried the flat key with chip transponder. 4) The battery was recently replaced and it worked fine until I tested out the flat key to see if it would work. 5) I disconnected the negative terminal for 15 minutes, reconnected and it still just clicks when I try to start. I believe this may be related to the flat key/chip transponder. The moment I tried it and it did not work is when all keys stopped working. It sounds like my next step is to have it towed to my Lexus tech where I had the repairs done and get this figured out. Thanks again for your advice and guidance.

Hello, I am a new member and this is my first post on this forum. Hopefully I am posting in the correct place. 🙂 I decided to test my flat key after eighteen years and followed the owners manual instructions on how to use it with the transponder chip. It did not work, so I tried multiple times. I then tried the valet key and it didn't work. My next and last step was to use my master key which was working fine. That did not work. I tried all three keys multiple times again. It just clicks and the dashboard lights up as shown in the pic. I can roll the windows up/down, lock the doors but it won't start. Did I accidentally activate the engine immobilizer by using the transponder chip in the flat key case? Any ideas what I can do?