Mercedes-Benz S-CLASS SEDAN 2023 Child Proof Lock and SmartKey User Manual
Child Proof Lock
Activating/deactivating the child safety lock for the rear doors
WARNING
Risk of accident and injury due to children left unattended in the vehicle vehicle.
- When leaving the vehicle, always take the key with you and lock the vehicle.
- Keep the key out of reach of children.
WARNING
Risk of fatal injury due to expo-sure to extreme heat or cold in the vehicle If persons, particularly children, are subjected to prolonged exposure to intense heat or cold, there is a risk of severe injury or even death.
- Never leave persons, particularly children, unattended in the vehicle.
WARNING
Risk of accident and injury due to children left unattended in the vehicle If children are traveling in the vehicle, they could, in particular:
- 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
- Always activate the child safety locks installed if children are traveling in the vehicle.
- Never leave children unattended in the vehicle.
- When leaving the vehicle, always take the SmartKey with you and lock the vehicle. There are child safety locks for the rear doors and the rear side windows.
- The child safety lock on the rear doors secures each door separately. The doors can no longer be opened from the inside.
- Press the lever in direction 1 (activate) or 2 (deactivate).
- Make sure that the child safety locks are working properly.
Activating/deactivating the child safety lock for the rear side windows
- To activate/deactivate: press button 2.
- The rear side window can be opened or closed as follows:
- Indicator lamp 1 is lit: via the switch on the driver’s door
- Indicator lamp 1 is off: via the switch on the corresponding rear door or driver’s door
- of the rear side windows
- of the rear window
- in the roof
SmartKey
Overview of key functions
WARNING
Risk of accident and injury due to children left unattended in the vehicle If you leave children unattended in the vehicle, they could, in particular:
- 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 by, for example:
- releasing the parking brake.
- changing the gearbox position.
- starting the vehicle.
- Never leave children unattended in the
- When leaving the vehicle, always take the key with you and lock the vehicle.
- Keep the key out of reach of children.
NOTE
Damage to the SmartKey caused by magnetic fields
- Keep the SmartKey away from strong magnetic fields.
- Vehicle key with panic alarm
- Opens/closes the trunk lid
- Unlocks (with embossed surface)
- Locks4 Indicator lamp
- Panic alarm
- If indicator lamp
- does not light up after you press the or s button, the battery is weak or possibly discharged.
- Replace the battery as soon as possible
- .Replace the key battery (/ page 85).
The key locks and unlocks the following components:
- Doors
- Fuel filler flap
- Socket flap (plug-in hybrid)
- Trunk lid
- If the vehicle is not opened within approximately 40 seconds after unlocking, it will lock again. Anti-theft protection will be armed again.
- Do not keep the key together with electronic devices or metal objects. This can affect the key’s functionality.
Indicator lamp of the vehicle locking system
Indicator lamp 1 in the trim on the driver’s side will flash when the vehicle is locked from the outside.
In the following cases, indicator lamp 1 will remain off:
- when the vehicle is locked from inside
- while you are driving
Activating/deactivating the acoustic locking verification signal
Multimedia system:
4© 5 Settings 5 Vehicle 5 Open/Close
- Activate or deactivate the Acoustic Lock.
Activating/deactivating the panic alarm
Requirements:
- The vehicle is switched off.
- To activate press button 1 for approximately one second. A visual and audible alarm is triggered.
- To deactivate: briefly, press button 1 again.
- Press the start/stop button.
A SmartKey belonging to the vehicle must be detected in the vehicle.
Changing the unlocking settings
Possible unlocking functions of the SmartKey:
- Central unlocking
- Unlocking the driver’s door and fuel filler flap
- Plug-in hybrid: unlocking the driver’s door and fuel filler flap/socket flap
- To switch between settings: press the Ü and s buttons simultaneously for approximately six seconds until the indicator lamp flashes twice. Options if the unlocking function for the driver’s door and fuel filler flap has been selected:
- To unlock the vehicle centrally: press the button twice.
- Vehicles with KEYLESS-GO: if you touch the inner surface of the door handle on the driver’s door, only the driver’s door and the fuel filler flap are unlocked. Options if the unlocking function for the driver’s door and fuel filler flap/socket flap has been selected (plug-in-hybrid):
- To unlock the vehicle centrally: press the Ü button twice.
- Vehicles with KEYLESS-GO: if you touch the inner surface of the door handle on the driver’s door, only the driver’s door and the fuel filler flap/socket flap are unlocked.
Deactivating the function of the key
Vehicles with KEYLESS-GO: if you deactivate the function of the key, the KEYLESS-GO functions are also deactivated. Access or drive authorization by KEYLESS-GO is then no longer possible with that particular key. Activate the function of the key so that all its functions will again be available. You can also deactivate the function of the key to reduce the energy consumption of the key if you do not use the vehicle or a key for an extended period of time.
- Press and hold the s button on the key.
- With the key button s pressed, immediately press key button twice in quick succession. The indicator light of the key lights up once briefly and once for a long time.
- You have the following options to reactivate the key: Press any button on the key.
- Start the vehicle with the key in the center console stowage space (/ page 204).
Removing/inserting the emergency key
Removing the emergency key
- Press release button Emergency key 2 will be pushed out slightly.
- Fully remove emergency key 2.
Inserting the emergency key
- Insert emergency key 2 at marking 3 until it engages.
- You can use emergency key 2 to attach the
- SmartKey to a key ring.
Replacing the key battery
DANGER
Risk of fatal injuries due to swallowing batteries Batteries contain toxic and corrosive substances.
- If batteries are swallowed or otherwise enter the body, severe internal burns can occur within two hours.
There is a risk of fatal injury. - Keep batteries out of the reach of children.
- If the battery compartment cover and/or lid do not close securely, stop using the key and keep it away from children.
- If batteries are swallowed or otherwise enter the body, seek immediate medical attention.
ENVIRONMENTAL NOTE Environmental
Damage due to improper disposal of batteries Batteries contains pollutants. It is illegal to dispose of them with household rubbish. Dispose of batteries in an environmentally responsible manner. Take discharged batteries to a qualified specialist workshop or to a collection point for used batteries.
Requirements:
- You require a CR 2032 3 V cell battery. Mercedes Benz recommends that you have the battery replaced at a qualified specialist workshop.
- Remove the mechanical key (/ page 84).
- Press mechanical key 2 into the opening in the key in the direction of the arrow until cover 1 opens.
- When doing so, do not hold cover 1 closed.
- Insert mechanical key 2 into the opening and lift up covering 3 and remove it.
- Repeatedly tap the key against your palm until battery 4 falls out of the key.
- Insert the new battery with the positive pole 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 impurities.
- Insert the front tabs of covering 3 into the housing and then press on both sides to close it.
- Make sure that covering 3 is completely closed.
- Insert the front tabs of cover 1 into the housing and then press until it is completely closed.
- Insert the mechanical key again (/ page 84).
Problems with the key, troubleshooting
You can no longer lock or unlock the vehicle Possible causes are:
- The key battery is weak or discharged.
- Check the battery using the indicator lamp (/ page 82).
- Replace the key battery, if necessary (/ page 85).
- Use the replacement key.
- Use the mechanical key to lock or unlock (/ page 91).
- Have key checked at a qualified specialist workshop.
- There is interference from a powerful radio signal source
Possible causes if the function of the key is impaired:
- high voltage power lines
- mobile phones
- electronic devices (notebooks, tablets)
- shielding due to metal objects or induction loops for electrical gate systems or automatic barriers
- Make sure that there is sufficient distance between the key and the potential source of interference.
You have lost a key
- Have the key deactivated at a qualified specialist workshop?
- If necessary, have the mechanical lock replaced as well.
Mercedes-Benz 2023 Top Accessories
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Reference Links
View Full User Guide: Mercedes-Benz S-CLASS SEDAN 2023 User Manual
Download Manuals: https://www.mbusa.com/en/owners/manuals
