Mercedes-Benz C-Class Manuals

Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual: HANDS-FREE ACCESS function


With HANDS-FREE ACCESS you can open, close or interrupt trunk lid movement by performing a kicking movement under the rear bumper.

The kicking movement triggers the opening or closing process alternately.

Observe the notes when opening and closing the trunk lid.

A warning tone sounds while the trunk lid is opening or closing.

WARNING Risk of burns caused by a hot exhaust system
The vehicle exhaust system can become very hot. If you use HANDS-FREE ACCESS, you could burn yourself by touching the exhaust system.
  • Always ensure that you only make a kicking movement within the detection range of the sensors.


NOTE Damage to the vehicle caused by unintentionally opening the trunk lid
  • When using an automatic car wash
  • When using a high pressure cleaner
  • Deactivate KEYLESS-GO or make sure that the SmartKey located is at least 10 ft (3 m) away from the vehicle in such situations.

When making the kicking movement, make sure that your feet are firmly on the ground, otherwise you could lose your balance, e.g. on ice.


  • The SmartKey is behind the vehicle.
  • Stand at least 12 in (30 cm) away from the vehicle while performing the kicking movement.
  • Do not come into contact with the bumper while making the kicking movement.
  • Do not carry out the kicking movement too slowly.
  • The kicking movement must be towards the vehicle and back again.


  1. Detection range of the sensors

If several consecutive kicking movements are not successful, wait ten seconds.

System limitations

The system may be impaired or may not function if:

  • Snow or dirt, e.g. from road salt, covers the sensor area.
  • The kicking movement is made using a prosthetic leg.

The trunk lid could be opened or closed unintentionally, in the following situations:

  • A person's arms or legs are moving in the sensor detection range, e.g. when polishing the vehicle or picking up objects.
  • Objects are moved or placed behind the vehicle, e.g. tensioning straps or luggage.
  • Clamping straps, tarps or other coverings are pulled over the bumper.
  • A protective mat with a length reaching over the trunk sill down into the detection range of the sensors is used.
  • The protective mat is not secured correctly.
  • Work is being undertaken on the trailer hitch, on trailers or rear bicycle racks.

Deactivate KEYLESS-GO or do not carry the SmartKey about your person in such situations.

Switching separate trunk locking on or off


  • To switch on: slide the switch to position 1.
  • To switch off: slide the switch to position 2.

If an accident has been detected, the trunk will unlock even if separate locking is switched on.

Unlocking the trunk with the emergency release from inside


  • The 12‑V‑vehicle battery is connected and charged.


  • Press emergency release button 1 briefly.

    The trunk lid unlocks and opens.

Activating/deactivating the trunk lid opening height restriction

Multimedia system:

Vehicle → Vehicle Settings → Trunk Lid Restriction

This function allows you to avoid bumping the trunk lid on a low garage ceiling, for example.

  • Activate or deactivate the function.
    Closing the trunk lid

    Roller sun blinds

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    Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual

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