Since yesterday my Citroen C3 (1.6Lt Diesel Manual) has started to emit 3 beeps while driving. It may happen every 10 mins or 2 to 3 times within 5 mins, I don't get anything displaying on the car computer or dashboard. I called Citroen but they did not know what it could be. Just wondering if anyone has experienced this. I probably will take it to my garage next week if it carries on.