2011 Volvo S40 Owner's Manual - Page 202

07 Wheels and tires Tire Pressure Monitoring System (TPMS) mended tire inflation pressures (see the inflation pressure table on page 182), for example, if higher inflation pressure is necessary when transporting heavy loads, etc. To recalibrate: 1. Switch off the engine. 2. Inflate the tires to the desired pressure and turn the ignition key to position I or II (see page 147 for additional information). 3. Turn the thumb wheel on the left-side steering wheel lever until Tire pressure Calibration appears in the display. 4. Press and hold the Reset button on the left-side steering wheel lever until TIRE PRESSURE CALIBRATED is displayed. Activating/deactivating TPMS (Canadian models only) 1. Switch off the engine. 2. Turn the ignition key to position I or II. 07 3. Press and hold the Reset button on the left-side steering wheel lever until TIRE PRESS SYST OFF is displayed. Repeat steps 1-3 to turn TPMS on again. 202