Hello folks, I am trying to ignition program a duplicate key for my RX300. I have browsed the forums and watched the youtube videos on this topic and am following the below sequence for programming the key:
Close the doors -> press accelerator once -> press break once -> enter master key -> press accelerator 5 times & then break 6 times -> take out the master key and enter the new key to program -> the security light starts blinking and the blinking stops once the key is programmed (in about 60 seconds or so).

I have tried at least 10 times, and the security light keeps blinking even after 10 minutes and the duplicate key is not getting programmed.

Note: There is some issue with the door locks as two of the doors have to be manually locked and one of the window does not close from driver's seat, not sure if this is interfering with the ignition programming. I am planning to see a locksmith before going to the dealership. Thought of sharing with this forum as you may have encountered something similar and may guide towards a solution.

Best wishes!

 

Update - I talked to my local, highly recommended locksmith and he mentioned that, the only option to program a duplicate RX300 key from master key is via the Lexus dealer and it will cost about $500 or so. Looks like the $15 key fob from amazon may not be programmed using the tips and tricks of the web. I plan to check with couple more locksmiths to see if they have a way.

 

The key issue is finally resolved. Thanks to Brandon @ Access Key & Security, 6644 San Pedro Ave, San Antonio. He spent quite some time and finally was able to come up with a duplicate key for much less than what the dealership was charging. Just submitted below review on google and yelp on my experience. Thanks ClubLexus for helping with the research with all this sea of related information on RX300, there are many more DIY tasks that the RX300 has in queue.

"I recently had the pleasure of visiting Access Key Shop located at 6644 San Pedro Ave in San Antonio, and I am thrilled to share my outstanding experience. In particular, I would like to commend the exceptional efforts of Brandon Denson, who went above and beyond in troubleshooting and creating a key for my 2000 Lexus RX300. Without a doubt, Brandon is a true prince among key makers.

After countless hours of scouring YouTube and the internet, attempting to solve my key duplication issue myself, I decided to turn to the professionals at Access Key. From the moment I walked through the door, I was greeted with warmth and professionalism. Brandon's friendly demeanor immediately put me at ease, and I knew I had come to the right place.

Brandon tackled my key problem with unwavering dedication, displaying an impressive level of expertise. Despite the complexity of the task, he skillfully resolved the issue, all while wearing a genuine smile on his face. His attention to detail and meticulous workmanship were truly commendable.

What also pleasantly surprised me was the reasonable rate charged by Access Key. They provided top-notch service without breaking the bank, which is something I greatly appreciated. It is rare to find such quality work at such fair prices.

To anyone in need of key-related services in San Antonio, I wholeheartedly recommend Access Key Shop. Their professionalism, expertise, and commitment to customer satisfaction are unmatched. And to Brandon, I extend my deepest gratitude for his outstanding work. His knowledge, skill, and friendly nature made my visit an absolute pleasure.

In conclusion, Access Key Shop and Brandon Denson deserve the highest praise. With their stellar service, reasonable rates, and exceptional expertise, they have gained a loyal customer in me. Keep up the fantastic work, Access Key, and best wishes to Brandon in all his future endeavors!"