Not sure if anyone here could help, but just wondered..............

A friend has just bought an '03 plate 2.0 DTi Club with which he is pretty chuffed. However, he is a taxi driver, and therefore exempt from the seatbelt law. This model has the 'chime' to alert the driver when the seatbelt is not being worn. Has anyone any information as to whether the chime can be activated, and if so, how this is done, as it is drving him bonkers!!!

Any help gratefully appreciated!!!!