one of your doors isn't locking (doors or hatch) or the hood or hatch isn't shut all the way

lock all your doors, and double check that all doors are indeed locked (including the hatch) by trying to open them. NOTE: the alarm will sound if the door is opened so be prepared

the horn isn't beeping because it's kind of a warning that something isn't "right". if a door isn't locked and you try to beep it, it won't beep - the car's letting you know something isn't locked/shut properly

EDIT: it's common for the driver or passenger door lock (actuators) to go out. if one of your doors isn't locking than it's VERY likely it's just a coincidence. you'll need to buy the door lock actuator for the door's lock that went out

 

there are 2 horns on the car, maybe the security horn (the one on the passenger side) is disconnected or busted.

 

Posted from an iPhone

Well I have the same problem on my base. But I just manualy lock both doors then it beeps.

 

All the doors are locked. I will try to manualy lock the doors when I get home and see what happens. If it's not that it may be the secound horn as stated. I do know that the alarm horn works fine

 

i tried manually locking the doors but it still does not beep anyone have any other ideas how i can fix this problem?

 

When you use the remote and press the lock button twice, the lights should flash and the security horn sounds. Do the lights flash for both presses on the lock button? If so, look closer at the security horn. If not, the problem could be the multiplex control unit or the security control unit.

The remote will lock the doors and flash the lights on the first press of the lock button. Right?

You said the alarm horn works fine. How do you know this?

 

check the rear hatch lock (actuator)

I was having the same issue with my horn not honking when attempting to lock the car. it turns out that the rear hatchback / trunk lock was not flipping to the lock position when attempting to lock the door. when inspecting why the trunk was not locking, i found that the trunk actuator was malfunctioning. there is a little pannel on the inside of the hatch by the lock. it easly pops off to gain access to the trunk lock mechanism. open the panel and flip the white swith to the opposite position (presumable to lock) then close the trunk and try to lock the car and see if horn beeps. trunk actuators cost a little over $100

 

When I hit the lock button the lights doesn't flash at all. I tried to have the alarm go off that did not work at all. When I hold down the panic button it beeps.

The back hatch locks Rlray

 

maybe they busted the hood latch when fixing your a/c and it isn't closing properly.

 

The hood hatch would effect the lights aswell?