Users Manual

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Users Manual

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C-Class - Interactive Owner's Manual                                                                          Seite 1 von 8



  [ C-Class Owner's Manual | Opening and closing | Key ]

  Owner's Manual version: AEJ2017-1a

  Print date: 12/12/2018

  Note
  The online Owner's Manual is always the current version. Possible variations to your vehicle may not be taken into
  account as Mercedes-Benz constantly updates their vehicles and equipment to the state of the art and introduces
  changes in design and equipment. Please note that this online Owner's Manual does not replace the printed Owner's
  Manual which was included when the vehicle was delivered.

Key

Content

  Important safety notes
  Key functions
  KEYLESS-GO
  KEYLESS-GO start function
  Changing the settings of the locking system
  Emergency key element
  Key battery
  Problems with the key

Important safety notes

United Kingdom only:



          WARNING

          When the double locks are activated, the doors can no longer be opened from the inside. People in the vehicle
          can no longer get out, e.g. in hazardous situations. There is a risk of injury.
          Therefore, do not leave any people unsupervised in the vehicle, particularly children, elderly people or people
          in need of special assistance. Do not activate the double lock when people are in the vehicle.



If the vehicle has been locked from the outside, the double lock function is activated as standard. It is then not possible to
open the doors from inside the vehicle. You can deactivate the double lock function by deactivating the interior motion
sensor (see Digital Owner's Manual). The doors can then be opened from the inside after the vehicle has been locked
from the outside. The anti-theft alarm system is triggered if the door is opened from the inside. Switch off the alarm .
All countries:



          WARNING

          If children are left unsupervised in the vehicle, they could:
             • open doors, thereby endangering other persons or road users
             • get out and be struck by oncoming traffic
             • operate vehicle equipment and become trapped, for example
          In addition, the children could also set the vehicle in motion, for example, if they:
             • release the parking brake
             • shift the automatic transmission out of park position P or shift manual transmission into neutral
             • start the engine
          There is a risk of an accident and injury.
          When leaving the vehicle, always take the key with you and lock the vehicle. Never leave children and animals
          unattended in the vehicle. Keep the keys out of the reach of children.




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        WARNING

        If you attach heavy or large objects to the key, the key could be unintentionally turned in the ignition lock. This
        could cause the engine to be switched off. There is a risk of an accident.
        Do not attach any heavy or large objects to the key. Remove any bulky keyrings before inserting the key into
        the ignition lock.




        Keep the key away from strong magnetic fields. Otherwise, the remote control function could be affected.
        Strong magnetic fields can occur in the vicinity of powerful electrical installations.



Do not store the key:
   • with electronic devices, e.g. a mobile phone or another key
   • with metallic objects, e.g. coins or metal foil
   • inside metallic objects, e.g. a metal case
     This can impair the key's function.
Vehicles with KEYLESS-GO start function: do not keep the key on the parcel shelf or in the boot. Otherwise, the key may
not be detected, e.g. when starting the engine using the Start/Stop button.
A check that periodically establishes a radio connection between the vehicle and the key determines whether a valid key
is in or in the direct vicinity of the vehicle. This occurs, for example:
   • while starting the engine
   • during driving
   • when using HANDS-FREE ACCESS
   • when the external door handles are touched
   • during convenience closing

Key functions




         Locks the vehicle
         Opens/closes the boot lid
         Unlocks the vehicle

  To unlock centrally: press the        button.
If you do not open the vehicle within approximately 40 seconds of unlocking:
    • the vehicle locks again
    • protection against theft is reactivated
  To lock centrally: press the       button.




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The key centrally locks and unlocks the following components:
   • the doors
   • the boot lid
   • the fuel filler flap
During unlocking, the turn signals flash once. During locking, they flash three times.
You can also set an audible signal to confirm that the vehicle has been locked. The audible signal can be activated and
deactivated via the multimedia system (see Digital Owner's Manual).
Only when all the components have been locked is the visual or audible locking confirmation issued.
When the locator lighting is activated via the multimedia system, it lights up when it is dark after the vehicle is unlocked
with the key (see Digital Owner's Manual).
  To open the boot lid automatically from outside the vehicle: press and hold the          button until the boot lid opens.
  To close the boot lid automatically from outside the vehicle: if the key is located in the immediate vicinity of the vehicle,
press the        button on the key.
When the boot lid closes you can then release the button.

KEYLESS-GO

General notes

Bear in mind that the engine can be started by any of the vehicle occupants if there is a key in the vehicle .

Locking and unlocking centrally

You can start, lock or unlock the vehicle using KEYLESS-GO. To do this, you need to carry the key with you. You can
combine the KEYLESS-GO functions with the functions of a conventional key. Unlock the vehicle using KEYLESS-GO, for
instance, and lock it using the      button on the key.
The driver's door and the door on which the handle is used must both be closed. The key must be outside the vehicle.
When locking or unlocking with KEYLESS-GO, the distance between the key and the corresponding door handle must not
be greater than 1 m.
A check that periodically establishes a radio connection between the vehicle and the key determines whether a valid key
is in or in the direct vicinity of the vehicle. This occurs, for example:
   • while starting the engine
   • while driving
   • when using HANDS-FREE ACCESS
   • when the external door handles are touched
   • during convenience closing




  To unlock the vehicle: touch the inner surface of the door handle.
  To lock the vehicle: touch sensor surface   or .
  Make sure that you do not touch the inner surface of the door handle.
  Convenience closing feature: touch recessed sensor surface          for an extended period.
  Further information on the convenience closing feature .
  To unlock the boot lid: pull the boot lid handle.




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Activating and deactivating

If you do not intend to use a key for an extended period of time, you can deactivate the KEYLESS-GO function of the key.
The key will then use very little power, thereby conserving battery power. For the purposes of activation or deactivation,
the vehicle does not have to be nearby.
     To deactivate: press the         button on the key twice in rapid succession.
The battery indicator light of the key flashes twice briefly and lights up once; KEYLESS-GO is deactivated.
     To activate: press any button on the key.
or
     Insert the key into the ignition lock.
KEYLESS-GO and all its associated features are available again.

KEYLESS-GO start function

General notes

Bear in mind that the engine can be started by any of the vehicle occupants if there is a key in the vehicle .

Changing the settings of the locking system

You can change the settings of the locking system. This means that only the driver's door and the fuel filler flap are
unlocked when the vehicle is unlocked. This is useful if you frequently travel alone.
  To change the setting: press and hold down the                 and          buttons simultaneously for about six seconds until the
battery indicator lamp flashes twice .
If the setting of the locking system is changed within the signal range of the vehicle, pressing the              or      button:
     • locks or
     • unlocks the vehicle
The key now functions as follows:
     To unlock: press the         button once.
     To unlock centrally: press the           button twice.
     To lock: press the        button.
  To restore the factory settings: press and hold down the                and         buttons simultaneously for approximately six
seconds until the battery check lamp flashes twice .
The KEYLESS-GO functions can be changed as follows:
     To unlock the driver's door: touch the inner surface of the door handle on the driver's door.
     To unlock centrally: touch the inner surface of the door handle on the front-passenger door or the rear door.
     To lock centrally: touch the outer sensor surface on one of the door handles.

Emergency key element

General notes

If the vehicle can no longer be unlocked with the key or KEYLESS-GO, use the emergency key element.
If you use the emergency key element to unlock and open the driver's door, the anti-theft alarm system will be triggered.
Switch off the alarm .
If you unlock the vehicle using the emergency key element, the fuel filler flap will not be unlocked automatically.
     To unlock the fuel filler flap: insert the key into the ignition lock.

Removing the emergency key element




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  Push release catch      in the direction of the arrow and, at the same time, remove emergency key element         from the
key.
Further information on locking/unlocking the driver's door .

Inserting the emergency key element

  Push emergency key element         completely into the key until it engages and release catch     is back in its basic
position.

Key battery

Important safety notes




        WARNING

        Batteries contain toxic and corrosive substances. If batteries are swallowed, it can result in severe health
        problems. There is a risk of fatal injury.
        Keep batteries out of the reach of children. If a battery is swallowed, seek medical attention immediately.




        Environmental note


                    Batteries contain pollutants. It is illegal to dispose of them with the household rubbish. They must
                    be collected separately and disposed of in an environmentally responsible recycling system.


                    Dispose of batteries in an environmentally responsible manner. Take discharged batteries to a
                    qualified specialist workshop or to a collection point for used batteries.




Mercedes-Benz recommends that you have the batteries replaced at a qualified specialist workshop.

Checking the battery




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  Press the        or      button.
The battery is OK if battery check lamp        lights up briefly.
The battery is discharged if battery check lamp        does not light up briefly.
  Replace the battery .
If the key battery is checked within the signal reception range of the vehicle, pressing the   or     button:
   • locks or
   • unlocks the vehicle



Replacing the battery

You require a CR 2025 3 V cell battery.
  Take the emergency key element out of the key .




  Press emergency key element     into the opening in the key in the direction of the arrow until battery compartment
cover   opens. When doing so, do not hold battery compartment cover        shut.
  Remove battery compartment cover         .




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  Repeatedly tap the key against your palm until battery        falls out.
  Insert the new battery with the positive terminal facing upwards. Use a lint-free cloth to do so.
  Make sure that the surface of the battery is free of lint, grease and other contamination.
  Insert the front tabs of battery compartment cover       into the housing and then press to close it.
  Insert emergency key element       into the key .
  Check the function of all key buttons on the vehicle.

Problems with the key

 Problem                                     Possible causes/consequences and              Solutions
You can no longer lock or unlock the         The key battery is weak or discharged.
vehicle using the key.                            Check the key battery and replace if necessary .
                                             If this does not work:
                                                  Lock or unlock the vehicle using the emergency key element .
                                             Interference from a powerful source of radio waves.
                                                  Lock or unlock the vehicle using the emergency key element .
                                             The key is faulty.
                                                  Lock or unlock the vehicle using the emergency key element .
                                                  Have the key checked at a qualified specialist workshop.

You can no longer lock or unlock the         KEYLESS-GO has been deactivated.
vehicle using KEYLESS-GO.                         Reactivate KEYLESS-GO .
                                             The key battery is weak or discharged.
                                                  Check the key battery and replace if necessary .
                                             If this does not work:
                                                  Lock or unlock the vehicle using the emergency key element .
                                             Interference from a powerful source of radio waves.
                                                  Lock or unlock the vehicle using the emergency key element .
                                             Fault with KEYLESS-GO.
                                                  Lock or unlock the vehicle using the remote control function of the key.
                                                  Have the vehicle and key checked at a qualified specialist workshop.
                                             If the vehicle cannot be locked or unlocked even using the remote control
                                             function:
                                                  Lock or unlock the vehicle using the emergency key element .
                                                  Have the vehicle and key checked at a qualified specialist workshop.

The engine cannot be started using the       The on-board voltage is too low.
key.                                           Switch off non-essential consumers, e.g. seat heating or interior lighting,
                                             and try to start the engine again.
                                             If this does not work:
                                                  Check the starter battery and charge it if necessary .
                                             or
                                                  Jump-start the vehicle .
                                             or
                                                  Consult a qualified specialist workshop.

The engine cannot be started using the       The vehicle is locked.
Start/Stop button. The key is in the              Unlock the vehicle and try to start the vehicle again.
vehicle.
                                             The key battery is weak or discharged.
                                                  Check the key battery and replace if necessary .
                                             If this does not work:
                                                  Start your vehicle with the key in the ignition lock.




http://moba.i.daimler.com/baix/cars/w205/en_GB/index.html                                                       12.12.2018


C-Class - Interactive Owner's Manual                                                                    Seite 8 von 8



 Problem                                  Possible causes/consequences and Solutions
                                          Interference from a powerful source of radio waves.
                                             Start your vehicle with the key in the ignition lock.

 You have lost a key.                        Have the key deactivated at a qualified specialist workshop.
                                             Report the loss immediately to the vehicle insurers.
                                             If necessary, have the locks changed as well.

 You have lost the emergency key             Report the loss immediately to the vehicle insurers.
 element.                                    If necessary, have the locks changed as well.




Itemization

  [ C-Class Owner's Manual | Opening and closing | Key ]

  Owner's Manual version: AEJ2017-1a

  Print date: 12/12/2018

  Note
  The online Owner's Manual is always the current version. Possible variations to your vehicle may not be taken into
  account as Mercedes-Benz constantly updates their vehicles and equipment to the state of the art and introduces
  changes in design and equipment. Please note that this online Owner's Manual does not replace the printed Owner's
  Manual which was included when the vehicle was delivered.




http://moba.i.daimler.com/baix/cars/w205/en_GB/index.html                                                   12.12.2018



Document Created: 2018-12-12 16:34:19
Document Modified: 2018-12-12 16:34:19

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