I replaced the fuse, left the car in park and the aircon / heating set to off. The fuse blew straight away. Would it be a fair assumption that it is the TPM system causing the problem? My thinking behind this is that the parking sensors wouldn't have been activated, nor would the aircon / heating unit. Is that a fair assumption? If so, can the TPM be turned off / disconnected? One more thing though, "Check TPM" flashed up regularly, but the sensors are still displaying the pressures through the console. Thoughts please?