2015 MERCEDES-BENZ C-Class SEDAN trunk release

Driving safety system
BAS PLUS with Cross-Traffic
Assist .............................................. .67
Driving safety systems
ABS (Anti-lock Braking System) ...... .66
ADAPTIVE BRAK E............................. 74
Adaptive Brake Assist ...................... 70
BAS (Brake Assist System) .............. 67
COLLISION PREVENTION ASSIST
PLUS ................................................ 69
Distance warning function ............... 69
EBD (electronic brake force distri- bution) ............................................. 73
ESP ®
(Electronic Stability Pro-
gram) ............................................... 71
ETS/4ETS (Electronic Traction
System) ........................................... 72
Important safety information ........... 66
Overview .......................................... 66
PRE-SAFE ®
Brake ............................. 74
STEER CONTROL ............................. 76
Driving systems
360°camera .................................. 211
Active Blind Spot Assist ................. 221
Active Lane Keeping Assist ............ 224
Active Parking Assist ..................... 202
AIRMATIC ...................................... 197
ATTENTION ASSIST ........................ 216
Blind Spot Assist ............................ 217
Cruise control ................................ 183
Display message ............................ 271
DISTRONIC PLUS ........................... 185
DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot ............... 194
Driving Assistance packag e........... 221
HOLD function ............................... 196
Lane Keeping Assist ...................... 219
Lane Tracking package .................. 217
PARKTRONIC ................................. 199
Rear view camera .......................... 207
Driving tips
Automatic transmission ................. 167
Brakes ........................................... 180
Break-in period .............................. 156
DISTRONIC PLUS ........................... 192
Downhill gradient ........................... 180
Drinking and driving ....................... 178 Driving abroad ............................... 124
Driving in winter ............................. 182
Driving on flooded roads ................ 182
Driving on wet roads ...................... 182
Exhaust check ............................... 178
Fuel ................................................ 178
General .......................................... 178
Hydroplaning ................................. 182
Icy road surfaces ........................... 182
Limited braking efficiency on sal-
ted roads ....................................... 181
Snow chains .................................. 361
Symmetrical low beam .................. 124
The first 1000 miles (1500 km) ..... 156
Wet road surface ........................... 181
DVD video
Operating (on-board computer) ..... 241 E
EASY-ENTRY feature Function/note s............................. 116
EASY-EXIT feature
Function/note s............................. 116
EASY-PACK trunk box ....................... 304
EBD (electronic brake force distri-
bution)
Display message ............................ 254
Function/note s................................ 73
ECO display
Function/note s............................. 179
On-board computer ....................... 236
ECO start/stop function
Climate control (dual-zone auto-
matic climate control ).................... 140
General information ....................... 161
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency
Automatic measures after an acci-
dent ................................................. 59
Emergency release
Driver's door .................................... 88
Trunk ............................................... 97
Vehicle ............................................. 88
Emergency Tensioning Devices
Activation ......................................... 56 Index
9

Labeling (overview) ........................ 375
Load bearing index (definition) ...... 380
Load index .....................................3
77
Load index (definition) ................... 379
Maximum loaded vehicle weight
(definition) ..................................... 379
Maximum load on a tire (defini-
tion) ............................................... 380
Maximum permissible tire pres-
sure (definition) ............................ .380
Maximum tire load ......................... 377
Maximum tire load (definition) ....... 380
MOExtended tires .......................... 360
Optional equipment weight (defi-
nition) ............................................ 380
PSI (pounds per square inch) (def-
inition) .......................................... .380
Replacing ....................................... 381
Service life ..................................... 360
Sidewall (definition) ....................... 380
Speed rating (definition) ................ 379
Storing .......................................... .381
Structure and characteristics
(definition) ..................................... 378
Summer tires in winter .................. 360
Temperature .................................. 374
TIN (Tire Identification Number)
(definition) ..................................... 380
Tire bead (definition) ..................... .380
Tire pressure (definition) ................ 380
Tire pressures (recommended) ...... 379
Tire size (data) ............................... 386
Tire size designation, load-bearing capacity, speed rating .................... 375
Tire tread ....................................... 359
Tire tread (definition) ..................... 380
Total load limit (definition) ............. 381
Traction ......................................... 374
Traction (definition) ....................... 380
Tread wea r..................................... 374
Uniform Tire Quality Grading
Standards ...................................... 373
Uniform Tire Quality Grading
Standards (definition) .................... 379
Wear indicator (definition) ............. 380
Wheel and tire combination ........... 388
Wheel rim (definition) .................... 379
see Flat tire Top Tether
............................................ 62
Towing away Important safety guidelines ........... 351
Installing the towing eye ................ 352
Notes for 4MATIC vehicles ............ 354
Removing the towing eye ............... 353
With both axles on the ground ....... 353
With the rear axle raised ................ 353
Towing eye ......................................... 340
Tow-starting Emergency engine starting ............ 354
Important safety notes .................. 351
Transfer case ..................................... 171
Transmission see Automatic transmission
Transmission position display ......... 166
Transmission position display
(DIRECT SELECT lever) ...................... 166
Transporting the vehicle .................. 353
Trim pieces (cleaning instruc-
tions) .................................................. 336
Trip computer (on-board com-
puter) .................................................. 237
Trip odometer Calling up ....................................... 236
Resetting (on-board computer) ...... 237
Trunk
Emergency release .......................... 96
Important safety notes .................... 90
Locking separately ........................... 96
Opening/closing (automatically
from inside) ...................................... 95
Opening/closing (automatically
from outside) ................................... 92
Opening/closing (from outside,
HANDS-FREE ACCESS) .................... 93
Opening/closing (manually from
outside) ............................................ 91
Opening (automatically from
inside) .............................................. 95
Opening (automatically from out-
side) ................................................. 93
Trunk lid
Display message ............................ 280
Obstacle recognition ........................ 91
Opening/closing .............................. 90
Opening dimensions ...................... 403 Index
19

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops (Y page 26). SmartKey
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle, they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. G
WARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally 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
SmartKey. Remove any bulky key rings before
inserting the SmartKey into the ignition lock.
! Keep the SmartKey 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 keep the SmartKey: R with electronic devices, e.g. a mobile
phone or another SmartKey
R with metallic objects, e.g. coins or metal
foil
R inside metallic objects, e.g. a metal case
This can affect the functionality of the
SmartKey.
Vehicles with KEYLESS-GO start function: do not keep the SmartKey on the parcel shelf or in the trunk. Otherwise, the SmartKey maynot be detected, e.g. when starting the engine
using the Start/Stop button.
A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart- Key is in the vehicle. This occurs, for example:
R when starting the engine
R whilst driving
R when the external door handles are
touched
R during convenience closing 80
SmartKeyOpening and closing

SmartKey functions
0043
0037 Locks the vehicle
0044 0054 Opens/closes the trunk lid
0087 0036 Unlocks the vehicle
X To unlock centrally: press button0087.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again.
R protection against theft is reactivated.
X To lock centrally: press button0043.
The SmartKey centrally locks/unlocks: R the doors
R the trunk lid
R the fuel filler flap
The turn signals flash once when unlocking
and three times when locking.
You can also set an audible signal to confirm that the vehicle has been locked. The audiblesignal can be activated and deactivated via
COMAND or Audio 20 (see the separate oper-
ating instructions).
When the locator lighting is activated via
COMAND or Audio 20, it lights up when it is
dark after the vehicle is unlocked with the
remote control (see the separate operating
instructions).
X To open the trunk lid automatically
from outside the vehicle: press and hold
button 0044until the trunk lid opens.
X To open the trunk lid automatically
from outside the vehicle: if the SmartKeyis in close proximity to the vehicle: press
the
0054 button on the SmartKey.
You can release the button as soon as the
trunk lid starts to close. KEYLESS-GO
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a
SmartKey in the vehicle.
Locking/unlocking centrally You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry
the SmartKey with you. You can combine the
functions of KEYLESS-GO with those of a con- ventional SmartKey. Unlock the vehicle by
using KEYLESS-GO, for instance, and lock it
using the 0037button on the SmartKey.
The driver's door and the door at which the
handle is used, must both be closed. The
SmartKey must be outside the vehicle. When
locking or unlocking with KEYLESS-GO, the
distance between the SmartKey and the cor-
responding door handle must not be greater
than 3 ft (1 m).
A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart- Key is in the vehicle. This occurs, for example:
R when starting the engine
R whilst driving
R when the external door handles are
touched
R during convenience closing SmartKey
81Opening and closing Z

onds until the battery check lamp flashes
twice (Y
page 84). Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO,
use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered. Switch off the alarm
(Y page 76).
If you unlock the vehicle using the mechanical key, the fuel filler flap will not be unlocked
automatically.
X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch 0043in the direction of
the arrow and at the same time remove
mechanical key 0044from the SmartKey.
For further information about: R unlocking the driver's door (Y page 88)
R unlocking the trunk (Y page 96)
R locking the vehicle (Y page 89)
Inserting the mechanical key X
Push mechanical key 0044completely into
the SmartKey until it engages and release
catch 0043is back in its basic position. SmartKey battery
Important safety notes G
WARNING
Batteries contain toxic and corrosive substan- ces. 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. H
Environmental note Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment. Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National
guidelines must be observed during disposal.
In California, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist workshop. SmartKey
83Opening and closing Z

Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle, they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
You should preferably place luggage or loads in the trunk. Observe the loading guidelines
(Y page 298). Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked. You can only open
the rear doors from inside the vehicle if they
are not secured by the child-proof locks
(Y page 65). If the vehicle has been locked
with the SmartKey or with KEYLESS-GO,
opening a door from the inside will trigger the
anti-theft alarm system. Switch off the alarm
(Y page 76). X
To unlock and open a front door: pull
door handle 0044.
If the door is locked, locking knob 0043pops
up. The door is unlocked and opens.
X To unlock a rear door: pull door han-
dle 0044.
Locking knob 0043pops up and the door
unlocks.
X To open a rear door: pull door handle0044
again.
The door opens. Centrally locking and unlocking the
vehicle from the inside
You can centrally lock and unlock the vehicle from the inside. The switches are on the
driver’s door. X
To unlock: press button 0043.
X To lock: press button 0044.
If the front-passenger door is closed, the
vehicle locks. Doors
87Opening and closing Z

X
Turn the mechanical key back and remove
it.
X Insert the mechanical key into the Smart-
Key.
X Hold the cover over the lock of the driver's
door with the thicker end towards the front of the vehicle and press to secure. Then
make sure that the slit of the cover is hor-
izontal.
Vehicles without KEYLESS-GO: X
Insert the mechanical key into opening 0043
in the protective cap.
X Pull and hold the door handle.
X Pull the protective cap on the mechanical
key as straight as possible away from the
vehicle until it releases.
X Release the door handle. X
Insert the mechanical key into the lock of
the driver's door as far as it will go.
X Turn the mechanical key counter-clockwise
as far as it will go to position 0047.
The locking knob pops up and the door
unlocks. X
Turn the mechanical key back and remove
it.
X Insert the mechanical key into the Smart-
Key (Y page 83).
X Carefully press the protective cap onto the
lock cylinder until it engages and is seated firmly. Do not pull the door handle when
doing so.
All vehicles:
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered. Switch off the alarm
(Y page 76). Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the SmartKey or KEYLESS-GO, use the mechani-
cal key.
X Open the driver's door.
X Close the front-passenger door, the rear
doors and the trunk lid.
X Press the locking button (Y page 87).
X Check whether the locking knobs on the
front-passenger door and the rear doors
are still visible. Press down the locking
knobs by hand, if necessary.
X Close the driver's door.
X Take the mechanical key out of the Smart-
Key (Y page 83).
Vehicles with KEYLESS-GO: X Insert the tip of the mechanical key into the
slit on the cover of the driver's door lock
and turn it until the cover is released. Doors
89Opening and closing Z

X
Insert the mechanical key into the lock of
the driver's door as far as it will go.
X Turn the mechanical key clockwise as far as
it will go to position 0047.
The locking knob drops down and the driv- er's door is locked.
X Turn the mechanical key back and remove
it.
X Insert the mechanical key into the Smart-
Key.
X Make sure that the doors and the trunk lid
are locked.
X Hold the cover over the lock of the driver's
door with the thicker end towards the front of the vehicle and press to secure. Then
make sure that the slit of the cover is hor-
izontal.
Vehicles without KEYLESS-GO: X
Insert the mechanical key into opening 0043
in the protective cap.
X Pull and hold the door handle. X
Pull the protective cap on the mechanical
key as straight as possible away from the
vehicle until it releases.
X Release the door handle. X
Insert the mechanical key into the lock of
the driver's door as far as it will go.
X Turn the mechanical key clockwise as far as
it will go to position 0047.
The locking knob drops down and the driv- er's door is locked.
X Turn the mechanical key back and remove
it.
X Insert the mechanical key into the Smart-
Key (Y page 83).
X Make sure that the doors and the trunk lid
are locked.
X Carefully press the protective cap onto the
lock cylinder until it engages and is seated
firmly. Do not pull the door handle when
doing so.
All vehicles:
If you lock the vehicle as described above, the fuel filler flap is not locked. The anti-theft
alarm system is not armed. Trunk
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running, 90
TrunkOpening and closing