MERCEDES-BENZ C-CLASS ESTATE 2021 Owners Manual

If standby mode is activated, energy loss will beminimised during extended periods of non-opera-
tion.
Standby mode is characterised by the following: = The starter battery is preserved.
= The maximum non-operational time appears in
the driver's display.
= The connection to online services is interrup-
ted.
If the following conditions are fulNlled, standby
mode can be activated or deactivated using the
multimedia system:
= The engine is switched oM.
= The ignition is switched on.
Exceeding the vehicle's displayed non-operational
time may cause inconvenience; i.e. it cannot be guaranteed that the starter battery will reliablystart the engine.
Charge the starter battery in the following situa- tions:
= The vehicle's non-operational time must be
extended.= The starter battery charge level is insuPcient
for standby mode.%Standby mode is automatically deactivated when the ignition is switched on.

q Activating/deactivating standby mode (parking
up the vehicle)
Requirements: = The engine is switched oM.
Multimedia system: 4 © 5
Settings 5
Vehicle
5 Opening/closing
Activate or deactivate Standby mode.
Driving and driving safety systems
Driving systems and your responsibility
Your vehicle is equipped with driving systems
which assist you in driving, parking and manoeu-
vring the vehicle. The driving systems are only
aids. They are not a substitute for your attention to the surroundings and do not relieve you of your responsibility pertaining to road traPc law. The
driver is always responsible for maintaining a safe
distance to the vehicle in front, for vehicle speed, for braking in good time and for staying in lane.
Pay attention to the traPc conditions at all times
and intervene when necessary. Be aware of the limitations regarding the safe use of these sys-tems.
Driving systems can neither reduce the risk of
accident if you fail to adapt your driving style nor
override the laws of physics. They cannot always take into account road, weather or traPc condi-
tions.
Information on vehicle sensors and cameras
Some driving and driving safety systems use cam-
eras as well as radar or ultrasonic sensors to
monitor the area in front of, behind or next to the vehicle.
Driving and parking189

1Multifunction camera2Cameras in the outside mirrors3Front radar4Front camera5Corner radars6Ultrasonic sensors7Reversing camera&WARNING Risk of accident due to restric-
ted detection performance of vehicle sen- sors and cameras
If the area around vehicle sensors or cameras
is covered, damaged or dirty, certain driving
and safety systems cannot function correctly.
There is a risk of an accident.
Keep the area around vehicle sensors or
cameras clear of any obstructions and
clean.Have damage to the bumper, radiator
grille or stone chipping in the area of the
front and rear windows repaired at a
qualiNed specialist workshop.
Particularly, keep the areas around the sensors
and cameras free of dirt, ice or slush
(  page 324). The sensors and cameras must
not be covered and the detection ranges around them must be kept free. Do not attach additional
licence plate brackets, advertisements, stickers, foils or foils to protect against stone chippings in
the detection range of the sensors and cameras.
Make sure that there are no overhanging loads
protruding into the detection range.
If there is damage to a bumper or the radiatorgrille, or aser an impact, have the function of the
sensors checked at a qualiNed specialist work-
shop. Have damage or stone chipping in the area of the cameras on the front and rear windows
repaired at a qualiNed specialist workshop.%The reversing camera can extend and retract
automatically for the purpose of calibration,
even though there is no camera image in the
display.
Overview of driving systems and driving safety
systems
= ABS ( Anti-lock Braking System) (  page 191)
= BAS ( Brake Assist System) (  page 192)
= ESP n
(Electronic Stability Program)
(  page 192)
= ESP n
Crosswind Assist (  page 193)
= ESP n
trailer stabilisation (  page 193)
190Driving and parking

=EBD ( Electronic Brakeforce Distribution)
(  page 194)
= STEER CONTROL (  page 194)
= HOLD function (  page 194)
= Hill Start Assist (  page 195)
= Adaptive Brake Lights (  page 196)
= ATTENTION ASSIST (  page 196)
= Cruise control (  page 197)
= Limiter (  page 198)
= Speed Limit Assist (country-dependent)
(  page 220)
= TraPc Sign Assist (  page 221)
= TraPc light view (  page 225)
Driving Assistance package%Active Distance Assist DISTRONIC, Active
Blind Spot Assist, Active Brake Assist, Active
Lane Keeping Assist and Active Emergency
Stop Assist are also available without the Driv-
ing Assistance Package, albeit with restricted functionality.= Active Distance Assist DISTRONIC
(  page 201)
= Active Speed Limit Assist (country-dependent)
(  page 205)
= Route-based speed adaptation (country-
dependent) (  page 206)
= Active Brake Assist (  page 215)
= Active Steering Assist (country-dependent)
(  page 208)
= Active Emergency Stop Assist (country-
dependent) (  page 211)
= Active Lane Change Assist (country-depend-
ent) (  page 212)
= Active Stop-and-Go Assist (country-depend-
ent) (  page 208)
= Active Blind Spot Assist with exit warning
(  page 225)
= Active Lane Keeping Assist (  page 229)
= PRE-SAFE n
Impulse Side (  page 49)Parking Package%The reversing camera is also available without
the Parking Package in some countries.%The availability of individual functions is coun-
try and equipment-dependent.
= Reversing camera (  page 232)
= 360° Camera (  page 236)
= Parking Assist PARKTRONIC (  page 242)
= Active Parking Assist (  page 245)
Functions of ABS (Anti-lock Braking System)
ABS regulates the brake pressure in critical driv-
ing situations:
= During braking, e.g. at maximum full-stop
braking or insuPcient tyre traction, the wheels
are prevented from locking.
= Vehicle steerability while braking is ensured.
If ABS intervenes when braking, you will feel a pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road con-
ditions and can serve as a reminder to take extra
care while driving.
Driving and parking191

System limits= ABS is active from speeds of approx. 5 km/h.
= ABS may be impaired or may not function if a
malfunction has occurred and the yellow 0025
ABS warning lamp lights up continuously in
the instrument cluster aser the engine is star-
ted.
Function of BAS
&WARNING Risk of an accident caused by a
malfunction in BAS (Brake Assist System)
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased.
Depress the brake pedal with full force in
emergency braking situations. ABS pre-
vents the wheels from locking.
The Brake Assist System (BAS) supports your emergency braking situation with additional brakeforce.
If you depress the brake pedal quickly, BAS is
activated:
= BAS automatically boosts the brake pressure.
= BAS can shorten the braking distance.
= ABS prevents the wheels from locking.
The brakes will function as usual once you release the brake pedal. BAS is deactivated.
Function of ESP n
(Electronic Stability Program)
&WARNING Risk of skidding if ESP n
is
deactivated
If you deactivate ESP n
, ESP n
cannot carry out
vehicle stabilisation.
ESP n
should only be deactivated in the
following situations.
ESP n
can monitor and improve driving stability
and traction in the following situations, within
physical limits:
= When pulling away on wet or slippery carriage-
ways.
= When braking.
If the vehicle deviates from the direction desired
by the driver, ESP n
can stabilise the vehicle by
intervening in the following ways:
= One or more wheels are braked.
= The engine output is adapted according to the
situation.
When ESP n
is deactivated, the 00BB warning
lamp lights up continuously:
= Driving stability will no longer be improved.
= The drive wheels could spin.
= ETS/4ETS traction control is still active.%When ESP n
is deactivated, you are still assis-
ted by ESP n
when braking.
When the 00E5 warning lamp Oashes, one or sev-
eral wheels has reached its grip limit:
= Adapt your driving style to suit the current
road and weather conditions.
= Do not deactivate ESP n
.
= Only depress the accelerator pedal as far as is
necessary when pulling away.
192Driving and parking

Deactivate ESPn
in the following situations to
improve traction:
= When using snow chains.
= In deep snow.
= On sand or gravel.%Spinning the wheels results in a cutting
action, which enhances traction.
If the 00E5 ESPn
warning lamp lights up continu-
ously, ESP n
is not available due to a malfunction.
Observe the following information:
= Warning and indicator lamps (  page 525)
= Display messages (  page 463)
ETS/4ETS (Electronic Traction System)
ETS/4ETS traction control is part of ESP n
and
makes it possible to pull away and accelerate on a slippery carriageway.
ETS/4ETS can improve the vehicle's traction by
intervening in the following ways:
= The drive wheels are braked individually if they
spin.
= More drive torque is transferred to the wheel
or wheels with traction.
*nOuence of drive programs on ESP n
The drive programs enable ESP n
to adapt to dif-
ferent weather and road conditions as well as the
driver's preferred driving style. Depending on the
selected drive program, the appropriate ESP n
mode will be activated. You can select the drive
programs using the DYNAMIC SELECT switch (  page 171).
Function of ESP n
Crosswind Assist
ESP n
Crosswind Assist detects sudden gusts of
side wind and helps the driver to keep the vehicle in the lane:
= ESP n
Crosswind Assist is active at vehicle
speeds between approx. 75 km/h and
200 km/h when driving straight ahead or cor-
nering slightly.
= The vehicle is stabilised by means of individual
brake application on one side.
Function of ESP n
trailer stabilisation&WARNING Risk of accident in poor road
and weather conditions
In poor road and weather conditions, the
trailer stabilisation cannot prevent lurching of
the vehicle/trailer combination. Trailers with a high centre of gravity may tip over before
ESP n
detects this.
Always adapt your driving style to suit
the current road and weather conditions.
When driving with a trailer, ESP n
can stabilise
your vehicle if the trailer begins to swerve from
side to side:
= ESP n
trailer stabilisation is active above
speeds of 65 km/h.
= Slight swerving is reduced by means of a tar-
geted, individual brake application on one
side.
= In the event of severe swerving, the engine
output is also reduced and all wheels are
braked.
Driving and parking193

ESPn
trailer stabilisation may be impaired or may
not function if:
= The trailer is not connected correctly or is not
detected properly by the vehicle.
Activating/deactivating ESP n
(Electronic Stability
Program)
Multimedia system:
4 © 5

qActivating/deactivating the HOLD function&WARNING Risk of an accident due to the
HOLD function being active when you
leave the vehicle
If the vehicle is only braked with the HOLD
function it could, in the following situations,
roll away:
= If there is a malfunction in the system or in
the power supply.
= If the HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. by a vehicle occupant.
Always secure the vehicle against rolling away before you leave it.
Requirements: = The vehicle is stationary.
= The driver's door is closed or the seat belt on
the driver's side is fastened.
= The engine is running or has been automati-
cally switched oM by the ECO start/stop func-
tion.
= The electric parking brake is released.
= Active Distance Assist DISTRONIC is deactiva-
ted.
= The transmission is in position 005B, 005E or 005C.
Activating the HOLD functionDepress the brake pedal, and aser a short
time quickly depress further until the 00D9
display appears in the driver display.Release the brake pedal.
Deactivating the HOLD function
Depress the accelerator pedal to pull away.
or
Depress the brake pedal until the 00D9 display
disappears from the driver display.
The HOLD function is deactivated in the following situations:
= Active Distance Assist DISTRONIC is activa-
ted.
= The transmission is shised to position 005D.
= The vehicle is secured with the electric park-
ing brake.
In the following situations, the vehicle is held by transmission position 005D and/or by the electric
parking brake:
= The seat belt is unfastened and the driver's
door is opened.
= The vehicle is switched oM.
= There is a system malfunction.
= The power supply is insuPcient.
In addition, the Brake immediately message may
appear in the driver display and a horn tone may
sound at regular intervals.Immediately depress the brake pedal Nrmly
until the warning message disappears.
The HOLD function is deactivated.Additionally secure the vehicle against rolling
away.
Function of Hill Start Assist
Hill Start Assist holds the vehicle for a short time
when pulling away on a hill under the following conditions:
= The transmission is in position 005B or 005E.
Driving and parking195

=The electric parking brake is released.
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal and
depress it before the vehicle begins to roll away.&WARNING Risk of accident and injury due
to the vehicle rolling away
Aser a short time, Hill Start Assist no longer
holds the vehicle.
Swisly move your foot from the brake
pedal to the accelerator pedal. Do not
leave the vehicle when it is being held by
Hill Start Assist.
Function of Adaptive Brake Lights
Adaptive Brake Lights warn following traPc in an
emergency braking situation with the following
actions:
= By Oashing the brake lamps
= By activating the hazard warning lights
If the vehicle is braked sharply from speeds above
50 km/h, the brake lamps Oash rapidly. This pro-
vides traPc travelling behind you with an even
more noticeable warning.
If the vehicle is travelling at speeds of more than
70 km/h at the beginning of the brake applica- tion, the hazard warning lights switch on once thevehicle is stationary. When you pull away again, the hazard warning lights will switch oM automati-
cally at approximately 10 km/h. You can also switch oM the hazard warning lights using the haz-
ard warning button.
ATTENTION ASSIST

q Function of ATTENTION ASSIST
ATTENTION ASSIST assists you on long, monoto-
nous journeys, e.g. on motorways and trunk
roads. If indicators of fatigue or increasing lapses
in concentration on the part of the driver are
detected, the system suggests taking a break.
ATTENTION ASSIST is only an aid. It cannot
always detect fatigue or lapses in concentration in
time. The system is not a substitute for a well-res-
ted and attentive driver. On long journeys, take regular breaks in good time that allow for ade-
quate recuperation.
You can choose between two settings:
= Standard: normal system sensitivity.
= Sensitive: increased system sensitivity: the
driver is warned earlier and the attention level detected by the system is adapted accord-ingly.
If drowsiness or increasing lapses in concentra-
tion are detected, the ATTENTION ASSIST Take
a break! warning appears in the driver display.
You can acknowledge the message and take a break where necessary. If you do not take a break
and ATTENTION ASSIST continues to detect
increasing lapses in concentration, you will bewarned again aser a minimum of 15 minutes.196Driving and parking

The following information is displayed in the driverdisplay:
= The length of the journey since the last break
= The attention level determined by ATTENTION
ASSIST:
- The more segments 1 of the circle dis-
played, the higher the detected attention level.
- Fewer segments 1 are displayed in the
circle as the attention level decreases.
If ATTENTION ASSIST is unable to calculate the
attention level and cannot issue a warning, the
System suspended message appears.
If a warning is given in the driver display, the mul- timedia system oMers to search for a rest area.
You can select a rest area and start navigation to this rest area.
ATTENTION ASSIST is activated automatically
when the engine is re-started. The last selected sensitivity level remains stored.
System limits
ATTENTION ASSIST is active in the 60 km/h to
200 km/h speed range.
Particularly in the following situations, ATTENTION ASSIST only functions in a restricted manner and
warnings may be delayed or not occur:
= If you have been driving for less than approx-
imately 30 minutes.
= If the road condition is poor (uneven road sur-
face or potholes).
= If there is a strong side wind.
= If you adopt a sporty driving style (high corner-
ing speeds or high rates of acceleration).
= If the Steering Assist function of Active Dis-
tance Assist DISTRONIC is active.
= If the clock is set to the incorrect time.
= If you change lanes and vary your speed fre-
quently In active driving situations.
Also observe any information regarding display
messages that can be displayed in the driver dis- play.
The ATTENTION ASSIST drowsiness or alertness assessment is reset and restarted when continu-ing the journey in the following situations:
= If you switch oM the engine.=
If you unfasten your seat belt and open the
driver's door (e.g. to change drivers or take abreak).
Cruise control and limiter

q Function of cruise control
Cruise control regulates the speed to the value
selected by the driver.
If you accelerate to overtake, for example, the
stored speed is not deleted. If you remove your foot from the accelerator pedal aser overtaking,
cruise control will resume speed regulation back
to the stored speed.
You can store any speed above 20 km/h up to the
maximum design speed or up to the set winter tyre limit.
Observe the notes on driving systems and your responsibility; you may otherwise fail to recognisedangers (  page 189).
Messages in the driver display
= J (grey): cruise control is selected but not
yet active, or temporarily passive.
= J (green): cruise control is active.
Driving and parking197

A stored speed appears under the J display
and is indicated in the speedometer.
System limits
Cruise control may be unable to maintain the
stored speed on uphill gradients. The stored
speed is resumed when the gradient evens out.
Change into a lower gear in good time on long andsteep downhill gradients. Take particular note of
this when driving a laden vehicle. By doing so, you
will make use of the engine's braking eMect. This
relieves the load on the brake system and pre-
vents the brakes from overheating and wearing
too quickly.
Do not use cruise control in the following situa-
tions:
= In traPc situations which require frequent
changes of speed, e.g. in heavy traPc, on
winding roads.
= On slippery roads. Accelerating can cause the
drive wheels to lose traction and the vehicle
could then skid.
= If you are driving when visibility is poor.
qFunction of the limiter
The limiter restricts the speed of the vehicle. To
reduce the speed to the set speed, the limiter applies the brakes automatically.
You can limit the speed as follows:
= Variable: for a short-term speed restriction,
e.g. in built-up areas
= Permanent: for a longer-term speed restric-
tion, e.g. in winter tyre mode
You can store any speed above 20 km/h up to the
maximum design speed or up to the set winter
tyre limit. You can also perform settings while the
vehicle is stationary if the vehicle has been star-
ted.
Observe the notes on driving systems and your responsibility; you may otherwise fail to recognisedangers (  page 189).
Messages in the driver display = 00A9 (grey): variable limiter is selected but not
yet activated.
= 00A9 (Oashes grey): variable limiter is tempo-
rarily passive.= 00A9 (green): variable limiter is activated.
A stored speed appears under the 00A9 display
and is indicated in the speedometer.
If you depress the accelerator pedal beyond the
pressure point (kickdown), the variable limiter
switches to passive mode. The 00A9 passive
message appears in the driver's display and the 00A9 display Oashes.
The variable limiter is reactivated in the following situations:
= If the vehicle speed drops below the stored
speed.
= If the stored speed is called up.
= If you store a new speed.

q Operating cruise control or the variable limiter&WARNING Risk of accident due to stored
speed
If you call up the stored speed and this is
lower than your current speed, the vehicle
decelerates.
198Driving and parking