So this is going to sound real stupid but my key broke off the from the plastic remote and now it is lost and have no spare keys now I'm stuck without one does anyone know where I can get a new key cheap or a decent price???

 

Go to your local Lexus dealer with a copy of your registration and they'll cut you a key for about $40 bucks or so. Won't be that nice remote key you just broke but it'll get the job done.

 

Yep you will have to go to a dealership

 

what dealer are you referring to? I just pulled into one today and was told the only replacement key they could offer me was the one with the built in remote and it would be $500.

 

I've done some googling and have found a variety of 3rd parties offering keys.

I have a single master key that doesn't work on my trunk for some reason (does work on the glove box, so it's not a valet key).

I put a new battery into the master key and it doesn't actuate door locks or alarm.

I'm strongly considering pulling the trunk key tumblers, taking to a locksmith and getting some new keys made.

I'm also most likely going to go with an aftermarket alarm. For reference I've got a 92 SC400. I understand there could be some entanglements with the factory alarm system but don't know details.

 

my key for my ls400 broke. i keep the broken half with the remote on a keychain and use the valet to drive it.

 

I bought keys for 2 of my cars, they were about $80/each at the dealer.