And of course the module that controls if is in the rear cubby holes (prone to damp) so worth looking in there too.
From my manual.
“Fault Detection
If a sensor fails, the amber warning indicator in the instrument cluster will be illuminated. A message 'XX Tyre Not Monitored' will be displayed in the message center in addition to the amber warning indicator.
• NOTE: 'XX' is the tire position on the vehicle, e.g. FL (front left), FR (front right), RL (rear left) or RR (rear right).
If more than one sensor fails or the TPMS module develops a fault, the amber warning indicator will be illuminated. A message 'Tyre Monitoring System Fault' will be displayed in the message center in addition to the amber warning indicator. This fault could also be caused if RF interference near the vehicle affects the system signal reception. When the interference has ceased, the fault will be automatically cancelled and the TPMS will operate normally.
If a tire pressure sensor battery voltage becomes low, the sensor transmits a message to the TPMS module. The module stores the low battery condition as a fault flag in its memory with no other visual warnings displayed. If the battery fails, the sensor will stop transmitting and the TPMS module will transmit a message to display 'FL Tyre Not Monitored' for example in the message center. The dealer should interrogate the TPMS module for the fault flag using a Land Rover approved diagnostic system to determine the cause of the message. If the battery has failed, the sensor must be replaced and the stored fault flags removed using a”
So you may have 2 or more duff sensors
When we switch to our winter tires which don’t have TPMS in the wheels, all we get is a fault show after 15mins that says no TPMS monitoring available, just goes away.
Not looked at our Gap in the TPMS. But will say it’s been a good tool for us so far.
J
