Honda 2011 Ridgeline Owner's Manual page 288

Tire Pressure Monitoring System (TPMS)
If there is a problem with the TPMS,
the tire pressure monitor shows a
''SYSTEM FUNCTION ERROR''
message and the tire pressure
readings are not displayed. If this
happens, you will first see a system
warning message ''CHECK TPMS
SYSTEM'' on the multi-information
display.
284
TPMS System Failure
If there is a problem with the TPMS,
you will see the above message on
the multi-information display.
If you see this message, the system
is off and is not monitoring the tire
pressures. Have the system checked
by your dealer as soon as possible.
2011 Ridgeline
Also, the low tire pressure/TPMS
indicator begins to flash, then stays
on (see page 281 ).