l have a 94' Es and my key(unlock/lock) function is'nt working. Can anyone help me?
l just went to radioshack and got new batteries for the key so...?

l have a 93 lexus and l have the same problem,sometimes it works and sometimes it dont.. one key works and one dont.i think it has a sensor that is loose. cant really answer your question,but l think after 14 years it is bound to go. good luck.

Try inserting the key into the drivers or passenger is side door, turn to lock or unlock and press the ''unlock'' key at the same time. This will ''reinitiate'' the system. If this does not work, then it is probably the batteries.

They are expensive to replace give Merkado Tech. a call 408-848-5000 they can cut and progam a key to work with your lexus