lost my keyless middle part (brain) help!
 

Hey guys was running some errands and was driving my TL and then I saw that my Lexus key was broken and the middle was gone. So now I only had one master and its gone. But the thing is I have another master key and a valet. But the master key is programmed to unlock car but not cut. So what should I do? Is there any diy? Or should I just start looking back for my car key?

Do you still have the cut blade of the broken key? You can take the uncut programmed key to a locksmith and have it cut to match the broken key blade. Some dealers also cut it for a charge ($20 - $40).