Hi, I have just got a Merc C220 CDi Avantgarde Auto, 2003. The handbrake alarm keeps going off although the handbrake is not on. Is there a simple, inexpensive way, to sort this? Also the rear windscreen wiper/washer system does not work, when you press the button on the dash no light comes on. I have looked at the fuses but (being a woman!) that is were my ideas end. Does anybody out there have any ideas/suggestions please?