Faint beeping after cold start - while driving

[phxS4]

About every morning when I do a cold start on the car, I hear this faint beeping sound almost like it is coming from the rear/trunk of my car. It is garaged, temps have been around the 30s to 40s here in the morning lately. And the beeping starts almost immediately after reversing out of the garage and out of the driveway. So after I pick up about 10-15mph on my street is when it starts.

I also have the radio turned all the way down. No warnings are showing on the dash and car is behaving just fine. I don't hear it after this instance for the rest of the day or I am just not paying close enough attention...

Anyone else experience this?

[esc]

Will be watching this. I've heard the sound you're describing. No idea what it is.

[Tweakophyte]

seatbelt?

[phxS4]

Nope, it's not a loud sound. Plus I'm always buckled.

[jsh139]

Odd. Completely wild guess here, but maybe the battery in the alarm horn is dying and it's trying to alert you? The car alarm module is located somewhere in the trunk and it's powered by a rechargeable battery. Does the car still chirp when you lock/unlock the doors?

[phxS4]

Odd. Completely wild guess here, but maybe the battery in the alarm horn is dying and it's trying to alert you? The car alarm module is located somewhere in the trunk and it's powered by a rechargeable battery. Does the car still chirp when you lock/unlock the doors?

Yep, car still chirps during lock. Never had any sort of problems or delay with the lock/unlock/alarm on it. 2.5 years and 25k on the clock btw.

[DKo5]

I've got it too. I think it's some kind of interference coming thru the sound system. It's extremely faint, I doubt I could record it.

Sent from my Nexus 5X using Tapatalk

[phxS4]

I've got it too. I think it's some kind of interference coming thru the sound system. It's extremely faint, I doubt I could record it.

Sent from my Nexus 5X using Tapatalk

Would it still make the sound with the volume low or maybe even off? Guess I haven't tried it off yet... Worth a shot. Still every morning I feel like someone Hurt Lockered my car and freaks me out.

[chilort]

I have a sound from the audio system when the system is muted. It shifts from side to side like 3 times and stops. I wouldn't call it a beep though. I've wondered if was some kind of calibration for the audio system.