PSI (pounds per square inch)

A standard unit of measure for tire pressure.

    See also:

    Activating/deactivating ATTENTION ASSIST
    This function is not available in HYBRID vehicles. Press the or button on the steering wheel to select the DriveAssist menu. Press the or button to select Attention Assist. Press . ...

    Features & Pricing
    The CLS550 starts at $71,300, which seems rather high considering its standard rear-wheel drive; it's $73,800 with all-wheel drive. The E550 with the same engine has standard all-wheel drive for a ...

    Activating/deactivating
    •► To activate: press the button. The indicator lamp above the button lights up. •► To switch off: press the button. The indicator lamp above the button goes out. The co ...