See also:

Anti-lock Brake System (ABS)
The ABS system performs a brief self-diagnostic test when the engine has been started and driver releases the brake pedal. Another automatic test may be performed when the vehicle first reache ...

Buttons in the center console
...

W – Winter/Wet driving mode –enhanced vehicle traction
Press the W button at the base of the gear selector to engage/disengage this driving mode (see illustration). The W symbol will appear in the display (see page 58) when the function is activated ...