wujiamin

I have a 1999 Lexus RX300. For some reason my car won't lock anymore. The only way I can get my car to lock is if I stick the key in the keyhole and turn it. But if I try to press the lock button on the key, it doesn't do anything. The unlock button on the key works fine. The alarm button won't work either. Also if I try to lock the car with the buttons on the driver or the passenger side, it automatically unlocks. It was working this morning. It stopped working after I left one of the door open and accidentally pressed lock on my key. It made a loud continuous beep and so I pressed unlock to make it stop. But I kept the door open. Now it won't lock from the key anymore and if I leave the door open and try to lock, it won't make the continuous beep sound either.

carguy07

I would start with disconnecting the battery to reboot and see what happens. Almost sounds like it thinks that the door is still open.

thomas1

I would say you have a bad lock solenoid....If the solenoid doesnt actuate then the sensor for the alarm wont work. read this thread
https://www.clublexus.com/forums/rx-...-write-up.html

hypervish

Does the door lock if you press the button on the driver's side door panel to lock all the door's in the car?

obscene

I had a similar problem in my car. I let the problem slide for about a year or so (lazy) until one day I left the light on in my car over the weekend and completely drained my battery. When I took my battery to AutoZone to have it charged, I replace my key fob battery at the same time (thought I should go ahead and do since it's been a few years). After that it start working fine. So, the problem could have been fixed by either the car not having power for an extended amount of time (2-3 days), or a new key fob battery.