Is there and easy way? Spent 6 hours at Toyota centre yesterday for oil change, tighten the alternator belt they put on and to look at the central locking not working. Now it locks but relocks with the door open, when the door is closed the alarm goes off. Don't really need an alarm, nobody does anything if it does go off anyway. Dont fancy spending hours back at Toyota again!

I'm not saying this will fix your problem but it's worth a try;

 

https://itstillruns.com/disable-factory-toyota-alarm-7440586.html