Ok my gs has a broken remote fob. Nothing wrong with the battery so i got a spare one from a car being broken in the hope lexus could recode it to my car. Problem is they tell me i need the master key. I only have 1 key and its black. Normally master keys are red. Is there any other way to get it coded without a master key?

what age of GS is it? Master keys are normally black.

If you have the Mk2 the master key is black

and if it's a Mk2 pre Oct 2000 facelift then you cannot get another key programmed without a master unless you also change the engine ECU.

Sorry should have said. Its a mk1 on a R plate 97. My key is black is there anyway to tell if it's a master key?

I believe the master is black even on the Mk1. If it is a genuine Lexus key then a master will lock/unlock the glovebox. It would be possible for a third party key to be cut as a master key but not programmed as one, if that makes sense.

The Mk1 has a UK installed alarm system rather than being integrated into the engine ECU like the later models so it is not as difficult to get new master keys.

Does the key have any electronics in it, as mine has no buttons. I have a separate remote fob. The key looks genuine to me with a a gold L stamped into it. I did wonder if the car was alarmed or imobilezed.

[quote name='supramad77' post='673182' date='Jun 6 2009, 10:43 PM']Does the key have any electronics in it, as mine has no buttons. I have a separate remote fob. The key looks genuine to me with a a gold L stamped into it. I did wonder if the car was alarmed or imobilezed.[/quote]
The electronics for the doors/alarm etc. are in the remote keyfob.

If the key is a master key it will open glovebox, boot and the bootlock just under your dash by the petrol flap opener.

[quote name='dave1' post='673230' date='Jun 7 2009, 07:31 AM'][quote name='supramad77' post='673182' date='Jun 6 2009, 10:43 PM']Does the key have any electronics in it, as mine has no buttons. I have a separate remote fob. The key looks genuine to me with a a gold L stamped into it. I did wonder if the car was alarmed or imobilezed.[/quote]
The electronics for the doors/alarm etc. are in the remote keyfob.

If the key is a master key it will open glovebox, boot and the bootlock just under your dash by the petrol flap opener.
[/quote]


Ahh sounds good then as i know it opens the boot and locks the boot lock. Not locked the glove box but sounds like it's a master.
Thanks for the help.