Ford 2011 C-Max Owner's Handbook Manual page 102

Tyre pressure monitoring system
Message
Check tyre pressures
Tyre pressure sys malfunction
service required
Information displays
Message
indicator
amber
amber
100
Action
The pressure in one or more tyres
has dropped. Check as soon as
possible.
Permanent malfunction. Have
your vehicle checked by a prop-
erly trained technician.