The Advanced Parking Guidance system, standard on the S-Class, not only identifies whether a kerbside space is suitable for your car but also guides you in.
At speeds below 25 mph, the system uses discrete, side-mounted radar sensors to scan for spaces at least 1.8 m longer than the vehicle. Below 10 mph, a “P” symbol appears in the instrument cluster display if a space has been identified. When you begin your parking manoeuvre, steering directions appear in the display to guide you into the space. These show both your ideal and actual path, allowing you to correct steering until the two paths coincide. As with the familiar Parktronic system, audible warning tones alert you to the proximity of stationary objects.
Naturally, the system can be switched off via a switch on the dashboard if you prefer to park unaided.