Method for protecting the battery of a wheel unit fitted to a wheel of a motor vehicle

A method for protecting a battery of a wheel unit fitted to a wheel of a motor vehicle, said motor vehicle comprising a central processing unit and a radio-frequency receiver, and said wheel unit comprising at least:

• a first sensor capable of measuring and of supplying an operating parameter of the wheel unit, a transmitter adapted to transmit messages to the receiver from the central unit of the motor vehicle, and
• a battery which supplies the wheel unit with power,
• the method comprising:
• the wheel unit transitioning from an operational state to a non-operational state when said operating parameter reaches a predetermined upper threshold, the transition to the non-operational state causing an activity of the wheel unit to be limited to a predetermined level of consumption of power drawn from the battery, which predetermined level makes it possible at least to monitor said operating parameter, and
• the wheel unit transitioning from the non-operational state to the operational state when said operating parameter reaches a predetermined lower threshold, the transition to the operational state successively causing the activity of the wheel unit corresponding to a nominal level of consumption of power drawn from the battery to be re-established.