I searched but didnt find no info, but long story short i lost my master key and i only have Lexus Wallet Key. I was told the wallet key actsas a master which it does because i can role down all windows n lock glove box. My Question is if i buy another master key off lexus-parts would I be able to program it myself and fully use the master key with all the options like window etc?

 

You're gonna have to do a search on "programming keys". Just because the key can open the glove box etc, it doesn't mean that it's programmed as a master key. I don't know anything about the wallet keys (can it start the car?), but try inserting it in the ignition and look at the security light. I think if it goes off right away, it's programed as a master. If it goes off a couple seconds later, it's programed as a valet and you are out of luck.

The car I bought never came with a master key. It's a grey valet programed key, cut as a master.

 

You have to have a master key to program any additional keys. 99.999% of the time, wallet keys are programmed as master keys. I would be VERY surprised if its not. There are programming instructions all over club Lexus, I've programmed a few myself. Its not hard to do. Its just a matter of following a few instructions. The hard part is that you have to be very exact when following the instructions. Which can be frustrating if you don't get they key programmed the first few times. But then again, its only like 50 bucks to have it programmed at the dealer, so even if you can't program it yourself, you can still get it programmed.

 

Well... SURPRISE!! I guess the other 0.001% has spoken.