Locks with radio remote control
With the radio remote control, the vehicle can also be unlocked from a great distance, even out of sight. To prevent unauthorized persons from entering the vehicle, use the radio remote control only in the immediate vicinity of the vehicle.
Opening/closing the side windows and sliding/tilting sunroof and activating the seat ventilation system (summer opening/comfort closing function) for safety reasons, can only be carried out in the immediate vicinity of the vehicle via the infrared function of the remote control (below in this section).
The car package includes:
1 Two electronic master keys with retractable mechanical key. In order to better distinguish between the two main electronic keys, the release buttons -3- have different colors.
2 Spare electronic key without remote control functions with removable mechanical key. The vehicle cannot be unlocked by the radio remote control with the spare key and the summertime opening/convenience closing function cannot be activated.
Note. Do not expose the remote control device to excessive electromagnetic radiation. Danger of malfunction!
Models with KEYLESS-GO system:
Follow the instructions for using the electronic key and smart card at the same time (below in this section).
Master electronic key
4 Button functions.
Unlocking the driver's door
Press once.
The driver's door and the fuel tank hatch are unlocked.
Unlocking a single lock
Press twice.
The doors, the fuel filler cap and the trunk lid are unlocked.
Unlocking the vehicle and deactivating the anti-theft alarm (EDW) confirmed by a one-time flashing of the direction indicator lights.
If no doors or boot lid are opened after the vehicle is unlocked, the vehicle will automatically lock after approximately 40 seconds.
Models with memory function:
After unlocking the vehicle, the driver's seat, mirrors and steering wheel are set to the position memorized for the corresponding key. (Memory function - refer to Section Seat position memory).
Switching the function on and off «Unlocking the driver's door»:
Simultaneously press the and buttons and keep them pressed for about 6 seconds.
The control lamp -4- lights up twice.
If the function «Unlocking the driver's door» off, the single lock is unlocked by pressing the unlock button once.
Single lock
Press once.
The doors, fuel filler cap and trunk lid are lockable.
With the doors and trunk lid closed, activation of the authorized driving test system or the operational readiness of the anti-theft alarm (EDW) after locking, they are confirmed by flashing the turn signal lights three times.
Remote opening of the trunk lid
Press and hold the button until the trunk lid opens, unless the trunk lid was locked separately (below in this section).
Note. After closing the trunk lid, it is locked again if the car was previously locked with a single lock.
Attention! The trunk lid automatically folds up. So make sure you have enough free space!
5 Battery charge control
Each time the electronic key is used, the battery charge control LED lights up for a short time.
If the control LED does not light up, replace the batteries immediately.
Replacing the batteries of the main electronic key
There is a risk of poisoning!
Keep batteries away from children. If a battery is swallowed, seek medical attention immediately.
Environmental note!
Dispose of discharged batteries in accordance with environmental protection requirements.
Remove the mechanical key.
Lightly press the key into the hole -1- (not snarling).
Raise the battery compartment slightly in the direction of the arrow -3-.
Insert the batteries -4- under the contact spring -5- using a lint-free cloth. Plus sign up!
Slide the battery compartment into the key housing until it locks.
Note. The spare key cannot be opened, there are no batteries.
KEYLESS-GO system
The smart card of the KEYLESS-GO system -1- corresponds in function to an electronic key, the presence of a smart card provides the ability to use the car.
The smart card is checked for validity by holding the door handle or by pressing the button on the trunk lid. If the smart card has been recognized from the outside, the selected doors, trunk lid and fuel filler cap are unlocked accordingly.
For more information on the KEYLESS-GO system, see «Driving a car»:
«Starter activation function using the smart card of the KEYLESS-GO system» (Chapter Vehicle control and assistance systems).
«Starting a petrol engine with a smart card» (Chapter Vehicle control and assistance systems).
Important!
In order for the driver to be able to use all the functions of the KEYLESS-GO system at any time, the following must be observed:
- We recommend that the driver always carry a smart card with him. To unlock or lock, it must be outside the vehicle. It must be in close proximity (no more than 1.0 m) from the door or boot lid to be locked or unlocked. To control the functions of the ignition lock, the smart card must be in close proximity (no more than 1.0 m) from the door or boot lid to be locked or unlocked. The smart card must be in the vehicle to control the ignition switch functions.
- If the smart card is removed from the vehicle (for example, together with luggage or in a pocket of clothes), the vehicle can no longer be locked and the engine cannot be started.
- If the smart card is removed with the door open and the engine running, a warning message appears on the multi-information display every 3 seconds after starting off «CHIP CARD NOT RECOGNISED» (SMART CARD NOT RECOGNIZED).
- Remember that the car engine can be started by leaving the smart card in the car. If the smart card is left in the vehicle, the message appears on the multi-information display when the locks are locked «CHIP CARD STILL IN VEHICLE» (SMART CARD IN THE CAR).
In order to be able to drive if the KEYLESS-GO system function is impaired, for example due to strong radio interference or a dead vehicle battery, we recommend that you always carry a spare smart key with you.
Do not expose the smart card to excessive electromagnetic radiation. There is a risk of malfunction!
Note. Through the function of the KEYLESS-GO system, the side windows can also be raised and the sliding and lifting sunroof can be closed (comfortable closing) (below in this section).
To avoid the risk of being accidentally left outside, the boot lid cannot be closed when the car is locked if the smart card is in the rear shelf or in the boot.
Unlocking the car
Grab the door handle. The car is unlocked. Two settings can be selected:
Unlocking a single lock
Holding the door handle unlocks all doors, the trunk lid and the fuel filler flap.
Unlocking the driver's door
Grabbing the driver's door handle unlocks only the driver's door and the fuel filler door. When taken by the handle of another door, a single lock of the car is unlocked.
The door through which the unlocking was made can be opened immediately after an audible click. Other doors can be opened by lifting the lock button. (Switching the selected setting is discussed later in this Section).
Unlocking the vehicle and deactivating the anti-theft alarm (EDW) confirmed by a one-time flashing of the direction indicator lights.
If no doors or boot lid are opened after unlocking the vehicle, automatic locking takes place after approximately 40 seconds.
Individual unlocking/trunk opening
To open the trunk, press button -1-.
The button is located in the rear recess of the license plate.
Note. After closing the trunk lid, it is locked again if the car was previously locked with a single lock.
Switching between functions «Unlocking the driver's door» And «Unlocking a single lock»
Press the button -1- and keep it pressed until the control lamp lights up on the required symbol «Unlocking the driver's door» -2- or «Unlocking a single lock» -3-.
Car locking
1 Door lock button
Press the lock button on the door or trunk lid. If the doors are closed, a single car lock is locked.
2 Lock button on the trunk lid
The button is located in the rear recess of the license plate.
With the doors and trunk lid closed, activation of the authorized driving test system or the operational readiness of the anti-theft alarm (EDW) after locking, they are confirmed by flashing the turn signal lights three times.
Note. To avoid the risk of being accidentally left outside, the boot lid cannot be closed if the smart card is on the rear shelf or in the boot.
Calling up the last locking state generated by the smart card
Lightly press button -1-. Control LED «Unlocking the driver's door» -2- or «Unlocking a single lock» -3- lights up red or green.
- Green light: vehicle unlocked
- Red light: car locked
Battery charge control
Lightly press button -1-. Control LED «Unlocking the driver's door» -2- or «Unlocking a single lock» -3- should light up red or green.
If the control LEDs do not light up, replace the batteries immediately.
Replacing smart card batteries
There is a risk of poisoning!
Keep batteries away from children. If a battery is swallowed, seek medical attention immediately.
Environmental note!
Dispose of discharged batteries in accordance with environmental protection requirements.
Lift the cover -1- and remove the batteries.
Insert new batteries in accordance with the markings of the + and - poles cast on the smart card case.
Push in cover -1-.
Simultaneous use of an electronic key and a smart card
When using the smart key and smart card at the same time, driving with the smart key takes precedence over driving with the smart card.
If the engine was started with a smart card and then an electronic key is inserted into the ignition lock while the engine is running, the engine continues to operate in the positions of the AT selector lever R, N, D or shift ranges 4, 3, 2, 1 until it is turned off through a function of the KEYLESS-GO system.
If the smart key is inserted into the ignition switch and the selector lever is in position P, the smart key takes over control. The electrical equipment of the car is switched on in accordance with the position of the electronic key in the ignition switch, if necessary, the running engine is turned off.
Automatic locking while driving
Starting from a speed of about 15 km / h, the single lock of the car is locked.
If one of the front doors is opened from the inside, the single lock of the vehicle will be unlocked if the last unlocking was done with a single lock using a remote control device or a KEYLESS-GO smart card.
Auto lock can be turned on or off (refer to subsection «Individual installation» Section Multifunction steering wheel, multi-information display).
There is a danger of an accident!
You can stay outside when pushing or towing the car: The car is locked if the smart key is in the ignition in position 2 (models with KEYLESS-GO system: in driving position), and the car is moving.
(Turn off the function «Automatic locking while driving» - refer to subsection «Individual installation» Section Multifunction steering wheel, multi-information display).
Automatic unlocking in case of accident
The doors are only unlocked when a collision is above a certain value.
Single lock switch
The single lock switch is located on the center console.
Push switch:
- 1 locking
- 2 Unlock
With a single lock switch, the car can be unlocked or locked from the inside.
Locking with the single lock switch can only be done if the front doors are closed.
If locking was done with the smart key or through a function of the KEYLESS-GO system, unlocking with the switch is not possible.
There is a danger of an accident!
Do not leave children unattended in the car. They can open it even if it is blocked, and thereby endanger themselves and others.
Opening/closing the side windows and sliding/tilting sunroof (summer opening/comfort closing function)
Opening function in summer: the sliding and lifting sunroof is opened and the side windows are lowered, and at the same time the driver's seat ventilation system is switched on.
(«Seat ventilation system» - Chapter seats).
Comfort closing: the sliding and lifting sunroof is closed and the side windows are raised.
Electronic key control
Point the tip of the main electronic key at the driver's or front passenger's door handle.
Summer opening function:
Unlock the car, keep the button pressed until the windows and the sliding and lifting sunroof reach the desired position.
Interrupt opening:
Release the button.
Comfort closing:
Block the car, hold down the button until all windows go up and the sliding and lifting sunroof closes.
There is a risk of injury!
Control the lifting/closing process to avoid trapping passengers.
In case of risk of pinching, release the button - the lifting/closing process is interrupted immediately.
Press and hold the button - the side windows are lowered again and the sliding and lifting sunroof opens.
When leaving the vehicle, check that all side windows are up and that the sliding and lifting sunroof is closed.
Controlled by KEYLESS-GO
Comfort closing:
Press and hold the lock button in the door handle until all windows are up and the slide and lift sunroof is closed.
There is a risk of injury!
Control the lifting/closing process to avoid trapping passengers.
In case of danger and pinching, release the lock button in the door handle - the closing process is immediately interrupted.
Pull and hold the door handle - the side windows lower again and the sliding and lifting sunroof opens.
When leaving the vehicle, check that all side windows are up and that the sliding and lifting sunroof is closed.
Door opening
1 Opening the door from the outside
The door can only be opened from the outside if the vehicle has been previously unlocked.
2 Opening the door from the inside
A separate door can be opened from the inside even if the car is locked. In this case, only the corresponding door is unlocked.
Unlocking the doors is confirmed by pulling out the locking button -3-.
Door closing reinforcement
The doors and the boot lid close automatically if: the doors are pressed against the lock beyond the pre-lock position, the boot lid is pressed against the lock.
There is a risk of crushing!
Do not attempt to activate the door closing amplifier by manipulating the lock mechanism. Control the process of closing doors and trunk lid.
If necessary:
- Pull the door handle from inside or outside.
- Press the trunk lid lock.
- If the car is locked, unlock first.
Rear door locks
1 Blocking - slide the lever up.
2 Release - slide the lever down.
A locked door cannot be opened from the inside by pulling the handle.
The door can be opened from the outside if the car is unlocked. The tailgate lock button is in the up position.
There is a danger of an accident!
Do not leave children unattended in the car. They may open the door even if it is locked, endangering themselves and others.
Temporary deactivation of rear door locks
1 Switching off the rear door locks
The single lock switch is located on the center console.
Pressing the single lock switch for 5 seconds on both rear doors disables the locks.
Locked doors can be opened during this time from the inside using the door handle.
There is a danger of an accident!
If the rear door locks are turned off by pressing the single lock switch, both rear doors are unlocked. Make sure that the child does not accidentally open the door. Do not leave children unattended in the car. They can press the single lock switch to temporarily disable the rear door locks, or open one of the front doors even if it is locked, endangering themselves and others.
Mechanical key
The mechanical key -2- on the main smart key and the mechanical key -4- on the spare smart key can unlock and lock the driver's door (emergency door opening) or the boot lid is locked or opened separately.
(Emergency door opening - discussed below).
(Separate locking / opening of the trunk lid - discussed later in this Section).
Important!
When inserting the main electronic key into the ignition lock, the mechanical key must not be pulled forward. Otherwise, the ignition switch may be damaged.
Pulling the mechanical key out of the main electronic key: Move the button -1- in the direction of the arrow, and push the mechanical key -2- forward until it locks.
Inserting the mechanical key on the main electronic key: Press button -3- and push the mechanical key until it locks.
Removing the mechanical key: On the main electronic key, slide the button -1- in the direction of the arrow and remove the mechanical key -2- to the rear.
Remove the mechanical key -4- from the spare electronic key.
Emergency door opening
If the vehicle cannot be unlocked with the smart key remote control or smart card, unlock the driver's door with the mechanical key.
Note. Models with anti-theft alarm: The anti-theft alarm is activated when the door is opened with the mechanical key. The alarm can only be turned off by inserting the smart key into the ignition lock, pressing the or buttons on the smart key or, if a valid smart card is present, by grasping the door handle or by pressing the start/off button on the selector lever.
Separate locking/opening of the boot lid
The lock is located in the rear recess of the license plate.
Separate tailgate locking
Lock the trunk lid with the mechanical key -1- and remove the key in this position.
The trunk remains locked even after unlocking the vehicle's single lock.
Unlocking and locking the trunk lid with a single lock
Lock the trunk lid with the mechanical key -2- and remove the key in this position.
Opening the boot lid with the mechanical key: Turn the key to position -3- and press the lock cylinder.
Additional trunk lid lock
Locking and unlocking the vehicle also locks and unlocks the secondary lock on the boot lid.
If the boot is locked separately, the additional boot lid lock is also locked separately.
Remote opening of the trunk lid
The trunk lid remote release handle is located on the driver's door.
The trunk can only be opened with the remote opening handle when the vehicle is stopped.
To open the trunk lid, pull the remote opening handle up.
The control LED on the remote opening handle lights up as long as the trunk lid is open.
Important!
The trunk lid flips up. So make sure you have enough free space!
Note. If the boot lid does not open, it must first be unlocked separately (see above).
Closing the trunk
Lower the trunk lid by pulling it down on the notch -1- and slam it shut.
Note. To avoid the risk of being accidentally left outside, the boot lid cannot be closed when the vehicle is locked if the smart card is in the rear shelf or in the boot.
Emergency unlocking of the fuel tank hatch
Carefully pull back the inner side trim in the luggage compartment on the right. Pull the handle (arrow) and open the fuel tank door.
Loss of a smart card, electronic or mechanical key
Attention! Block the electronic key or smart card at one of the service stations «Mercedes-Benz», and report the loss to your insurance company immediately.
If the mechanical key is lost, we recommend replacing the mechanical elements of the locks.
A new smart card, electronic key or mechanical key can only be purchased through one of the service stations «Mercedes-Benz».
We recommend that you always carry a spare key with you.
General notes on the lock system
If the smart key is in the ignition lock, locking or unlocking with a second smart key or smart card is not possible.
If the vehicle cannot be unlocked or locked: Point the tip of the main smart key at the driver's or front passenger's door handle.
Check the battery charge of the main electronic key or smart card (materials at the beginning of the Section).
Open the car with the mechanical key. Insert the main smart key into the ignition and wait until the smart key in the ignition can be turned.