Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hey there, thanks for the question.
When you say the alarm goes off randomly, is it a factory or aftermarket alarm? Easiest way to tell is if the headlights flash when its going off. Factory alarms usually flash the headlights and aftermarket alarms the side lights.
Let me know please.
That is peculiar that the headlights do not flash. Have you tried holding down the panic button on the FOB and seeing if it mimicks what your seeing?
Well if it was coming from the FOB, replacing the battery wouldn't help. You would need to remove the battery and just diasable the FOB for a day or two and see if it goes away. I have seen alot of FOB alarm issues, but they usually cause other problems like windows partially rolling down etc.
This can be pretty tricky at this point since the alarm is going off randomly and not when you open the door.
Does your 02 xterra have the rear glass that opens seperately from the rear door?
Yes, it would mean you have to replace the FOB, but I am not SURE that is your issue here.
This could be any one of the tamper switches on the lock cylinders. Being an O2 that could be the drivers door, passengers door, or the rear door is I recall correctly.
Well the tamper switches are the easy ones to check.
Simply put the key in the cylinder when the alarm is going off and manually turn it to the lock position and it should disarm the alarm. If it does not disarm then the tamper switch on that key cylinder has fallen off or failed.
I am still not understanding why the headlights are not flashing to be honest. roll down the window and close all the doors and lock them to arm the alarm. Then reach in the drivers window and manually unlock it and open the door. This should set the alarm off and the headlights should flash.
you have all week honestly. Just reply here when you can, the question stays open for about 7 days whether you rate me or not.