I know others have been through this as well, and I'm sure I won't be the last, but if anyone can offer some advice I would really appreciate it.
I bought a second hand key from a MK4 LS, identical to my master key. I then bought a blank and had it cut. Transferred all the bits to the newly cut key, which fits OK and turns the ignition on.
The problem is, I've been through the steps on the instructions on this link http://www.automotiveforums.com/t65722-programming_keyless_remote_for_lexus_ls400.html
but every time I get to step 10 nothing happens. All the other steps seem to work. I've tried it now at least 10 times without success. Any ideas?
Thanks
Phil