3 chirps when using key fob

[Cuhrazatee]

Hey all,

I have a 1998 BMW Z3 2.8 with a recently replaced oem radio head unit. When replacing the head unit I was sure to re-install the endcap piece that screws in (apparently this has something to do with the factory alarm system). I checked the door, hood, and trunk sensors, and they seem to all be functioning appropriately. Did I make a mistake during the install of the radio? How can I correct this? Are there other factors that I am not considering?

Thanks.

-Cuhrazatee

 

[NZ00Z3]

Yes it sounds like you have a sensor telling the alarm that the sensor is not set.

For the radio, you either zip tie the contact closed or you unplug the square sensor and remove it. Both work to disable the radio sensor.

Same with the bonnet/hood sensor. Unplug it to disable it.

The correct way to diagnose the cause, is to check the car with INPA. You can see if the contacts for the radio, bonnet/hood and doors are all working correctly or not in the ZKE4 (GM4) module. Saves you from pulling the radio to try and fix a Bonnet/hood switch problem etc.