BMW X3 Service & Repair Manual > Tire pressure monitor system reminder: Tpms reminder reset - procedure 1
1. Set the tire pressure on all wheels to specification.
2. Turn ignition switch to ON position, with engine off.
3. Press reset button (for no longer than 10 seconds) until tire pressure warning light illuminates Yellow for
a few seconds.
NOTE: On some X5 models, the reset button is marked ...