U.S. models
If you replace a flat tire with the spare tire, the low tire pressure/TPMS indicator comes on while you are driving. After driving for a few miles (kilometers), the indicator will start blinking for a short time and then stay on. Tire Pressures Low appears on the driver information interface*, but this is normal.
Calibrate the TPMS when you replace the tire with a specified regular tire.
The system cannot monitor the pressure of the spare tire. Manually check the spare tire pressure to be sure that it is correct.
Honda Civic Owners Manual. Keys
Use the key to start and stop the engine, to lock and unlock the doors and to
open
the trunk. You can also use the remote transmitter or smart entry system* to
lock
and unlock the doors and to open the trunk.
Smart entry remote*
The built-in key can be used to
lock/unlock the
doors when ...