hi all ive got a 51 reg new shape mondy 2.5 v6.my seat belt light is flashing on my dashboard. 4 flashes then 2 flashes then 4 then 2 then 4 then 2 then stays on all the time does anybody no what is causing this. and my heater blower only works on speed 4. 1,2,3 dont do anything does anybody no how to fix this cheers dodgy. 