This has been ongoing problem for me. My car had an alarm installed when I bought it( i will post model ect. later today) but I had put it into vallet mode on accident somehow so my car is silent, no beeping to lock unlock doors, no alarm no anything. It was like this for a couple months then bam suddently one day it was working fine, now 2 weekes later it seems to have gone back into vallet mode again. Questions comments suggestions anything would help. Ill post model of alarm up later today if that helps thanks_