Remote control detection by the vehicle can among others be malfunctioning under the following circumstances:
Replace the battery
Do not transport the remote control together with metal objects or electronic devices.
In the case of a malfunction, unlock and lock the vehicle using the buttons of the remote control or using the integrated key.
BMW X3 Owners Manual > Seats: Front seat heating
Switching on
Press button once for each
temperature
level.
The maximum temperature is reached when
three LEDs are lit.
If the journey is continued within approx. 15
minutes, the seat heating is activated automatically
with the temperature selected last.
When ECO PRO, is activate ...