So im not a Lexus expert by any means but i will try and explain this as best as possible, it shouldnt be to hard. Ive got a 92 SC 400 with the key that has the tiny keyless entry button built in on the side. Over the years it has become weaker and weaker and is not working at all now. I dont want to take it apart yet for fear that i wont be able to get it back together for some reason, but my hope is that theres something like a watch battery inside or something. What am i dealing with here??

Thanks

 

Could be the battery or the antenna
Read this thread https://www.clublexus.com/forums/sho...d.php?t=233806

 

Its just a battery...its easy to replace. 3V BR1216.