I recently purchased an 89 Cherokee 4.0 (53,000 miles!!!).

The door/headlight buzzer buzzes whenever the door is open, regardless of whether the key is in the ignition or not. Is this normal? I have never had any other cars that buzzed when the driver's door was open without the key being in the ignition.

If so, I guess I'll just take the buzzer unit out. Otherwise, all I can think is that the key detection switch is messed up in the ignition cylinder. But the buzzer makes a second buzzing sound when the key is inserted (so, when the door is open and the key is in, there are two buzzer tones buzzing), which makes me think that the buzzer is acting as it was designed to do.

 

I had this issue as well. My dash light fuse also kept blowing because of a short. It all turned out to be the little door sensor, the thing that sticks out of the frame that the door pushes in to stop the obnoxious noise. Might wanna check that out.

 

Are you SURE the key is in the off position? Some older XJ's allow the key to be removed when it's not in the off position.

 

Yes, the ignition cylinder is definitely in the 'off' position.

Is that a way of saying that there shouldn't be a buzzer without the key and with the ignition off?

 

Yes, so something must be wired wrong. You should try figuring out what, and make sure it isn't drawing power from the battery constantly.

 

Thanks for the info. It didn't seem right that the buzzer would go off whenever the driver door was open, but it is good to know for sure before assuming!

 

Just pull the green wire in the door panel and never have the problem again