When the air pressure drops by 0.2 bar, a yellow indicator light with the corresponding wheel designation lights up on the display:
- VL - front left wheel;
- VR - front right wheel;
- HL - rear left wheel;
- HR - rear right wheel.
If the air pressure in the tire drops by more than 0.4 bar, a red warning light with the inscription lights up on the display "REIFENDRUCK" (Tire air pressure) with the designation of the corresponding wheel, for example, "HINTEN LINKS" (Rear left wheel). It is necessary to stop and check the tire pressure.