Strange beep

[WTF]

Is just on startup? It's not the airbag/baby seat beep?

[Charles@JohnGrose]

Good morning, Would you like us to call you to see if one of our Citroen technicians is able to help in any way? Or alternatively my phone number is 01473 242211.

[Chris_Blue]

Theres me submitting a "funny" as a post back in 2014, yet now my passenger seatbelt wont stop going off now
Any ideas where I start, with the seat belt received mechanism, or underneath the seat?
Switch it off somehow, or repair?

[The Tube]

Hi all, I have had bleep also. (DS3 3yr old diesel limited edition) Sounds like may be similar. Seat belt not fastened is a 3note tune repeating but this was just a very loud beep every second. Again no warning lights but on this occasion it was freezing out.
Car has not done it since even when freezing.
A cure for this was on youtube and it involved pressing MENU VOL up and VOL down all at same time. Had fingers poised over buttons and beeping magically stopped before i pressed them. So none the wiser........