I had the dealer install an alarm on a 07 X3 with "alarm prewiring". I am dissapointed in the volume of the "chirp" but more importantly, it chirps when I unlock the car with the key but only blinks the running lights when I lock it with the key. I was expecting a chirp for both unlock and lock. Is this normal operation. Also, this is a new used car to me ( previous was an X 5). My passenger side mirror does not dip for curb viewing with the mirror selector switch in either position. According to the manual, it should dip when the selector switch is in the driver side position. Any help on either of these two items would be appreciated.