Problems with PARKTRONIC

Problem Possible causes/consequences and Solutions
Only the red segments in the PARKTRONIC warning displays are lit.
You also hear a warning tone for approximately two seconds.
PARKTRONIC is deactivated after approximately 20 seconds, and the indicator lamp in the PARKTRONIC button lights up.		 PARKTRONIC has malfunctioned and has switched off.

PARKTRONIC checked at a qualified specialist workshop. If problems persist, have PARKTRONIC checked at a qualified specialist workshop.
Only the red segments in the PARKTRONIC warning displays are lit.
PARKTRONIC is deactivated after approximately 20 seconds.		 The PARKTRONIC sensors are dirty or there is interference.
sensors. Clean the PARKTRONIC sensors.
on. Switch the ignition back on.
The problem may be caused by an external source of radio or ultrasound waves.
in a different location. See if PARKTRONIC functions in a different location.
    See also:

    Center console, lower section - AMG vehicles
      ...

    Normal occupant weight
    The number of occupants the vehicle is designed to seat, multiplied by 68 kilograms (150 lbs). ...

    Problems with the occupant classification system
    Problem Possible causes/consequences and Solutions The indicator lamp illuminates and remains illuminated. The person on the front-passenger seat: - has the weight of ...