I have a 2007 Citroen C1 with 22,000 miles and the clutch has become a little 'sticky'. I mentioned this at the annual service and was told that it had been lubricated, but that if it persists then ...

If you have eliminated the possibility that it is a faulty seatbelt sensor, it may be that the clutch in your automatic is worn and the beeping is alerting you to the problem. This would account for ...