Correct Keyless Remote for 1993 in 2023

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05-16-24, 04:08 PM

#16

KahnBB6

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Quote:

Originally Posted by MDC

Hello from the Dominican Republic, I have been studying these keys for several months since I have a 1993 GS300, you do not purchase just the key, since each key for this model from the years 90-94 would require a new key with a new chip , which is inserted in the key signal receiver, so if you buy a key on eBay with the code HYQ1512A it will not work unless it comes with the ROM chip that goes in the receiver

This is correct. The earliest Lexus models through 1994 use the ROM chip system which is completely unavailable now from dealers. The 1995 SC300/400 used an early type of programmable remote master key even though it looks visually identical (apart from the model code) to the earlier ROM based remote master key. Then 1996 (I think?) and especially 1997+ Lexus models all went to the more commonly found three button programmable key... but with different spade lengths for different models. The SC300/400 (and Soarer) have one of the longer spade type keys for their lock cylinders.

I don't know when Lexus models went to remote keyfob transmitters but it's notable that even in 2012 the rare LFA supercar was still using a physical laser cut key spade inserted and twisted to start the ignition (probably in conjunction with an "Engine Start" button).