I have a July 2014 Focus 1L ecoboost, had it for 6 months.
I've just put my Winter steel wheels/tyres on and now I'm getting a "tyre monitoring system malfunction warning" The pressures are correct, the malfunction warning has been reset by resetting the pressure on the dashboard but it comes back after a few miles. It is not a tyre pressure warning but a system malfunction warning.
Looking at my 18" Summer wheels/tyres, the valves look like normal rubber valves not chunky so I thought the pressure monitoring system is based on the ABS and not a sensor in the wheel.
Ford Etis says, " Tyre Pressure Sensors - 433 MH"
Does anyone know for definite if my Summer wheels have sensors in them? If thats the case then I'll need to get them fitted to my Winter wheels.