Beeping as if I'm trying to lock the key in the car
 

My '07 coupe recently started beeping when I get in the car and close the door with the key inside. Once I close the door, both doors unlock and there is a fast beeping for about 3 seconds. If the key is not in the vehicle then it doesn't beep or unlock. It's behaving as if it thinks I'm trying to lock the key inside so I'm assuming this means a control module or sensor has gone bad. I searched the forum and found several threads about beeping, but none with a solution to this behavior. Anyone else experienced this?

That's a new one to me, sub'd for an answer.

Here's a video

do you have an aftermarket alarm? that beeping sounds aftermarket but then again idk what the intellikey beep sounds like since i dont have one

That's definitely the Ikey chime. Still unsure about why, OP have you tried to change the battery out to see if that changes anything?

I'd go through the troubleshooting table for the I-key in the owner's manual. Any programmed alert like that is going to be described. If you don't have a manual you should be able to download from the Infiniti website.

No aftermarket alarm, it's the IKey chime as Blue Dream said. I forgot that '07 was the only year with the Ikey so others aren't as likely to have this problem like I thought.

Yes, I tried changing the key fob battery because it was low and the dash light was on. The beeping started maybe a week or so after the dash light turned on. Maybe I should try to disconnect the car battery to reset things.

You're right, I need to check it just to be sure, but I don't think I'm likely to find the solution. Since the doors are unlocking I'm pretty sure it's a sensor malfunction.

Has there been any solution found? I’m having the same problem with my 07 coupe AT and haven’t found anything on the forums.