Yes I've tried a few new batteries. Also the switch on the dash to turn the remote on or off, is in the ON position. I've ordered a new key off ebay with the same FCCID. Some people tell me there is no way to program keys for 90-92 models. The lexus dealership tells me they think they can? The dealership can't give me a straight answer for some reason. Sounds like they are clueless to me. When my key arrives I will take it to the dealership and find out.