2014-2021 Mercedes C Class 4 Door Driving and parking -> Driving User Manual
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Driving and parking -> Driving for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

146 Climate control  
#
Switching off immediately  
Further possible displays:  
Press the u and ^ buttons simultane‐  
ously.  
#
R
Time: the activated departure time.  
Press and hold the ^ button.  
The Î symbol on the remote control display  
flashes.  
R
Zero minutes: the running time for the sta‐  
Overview of the remote control displays (sta‐  
tionary heater/ventilation)  
tionary heater is extended, as the engine has  
not yet reached operating temperature when  
it is started.  
#
Press the , and . buttons to set the  
desired departure time.  
#
Press the u and ^ buttons simultane‐  
R
OFF: the stationary heater/ventilation is  
ously.  
switched off.  
The new departure time will be stored.  
Replacing the remote control battery (sta‐  
tionary heater)  
Up to three departure times can be stored.  
#
To activate the departure time: select the  
&
DANGER Serious damage to health  
caused by swallowing batteries  
desired departure time and press and hold  
the u button.  
The Í symbol, the departure time and,  
depending on the selected departure time,  
the letter A, B or C will appear on the display.  
Batteries contain toxic and corrosive sub‐  
stances. Swallowing batteries may cause  
serious damage to health.  
1
Stationary ventilation switched on  
Stationary heater switched on  
Selected departure time  
Remaining time for the stationary heater/  
ventilation (in minutes)  
Stationary heater/ventilation active  
Departure time activated  
Signal strength  
2
3
4
#
To deactivate the departure time: select  
There is a risk of fatal injury.  
the desired departure time and press and  
hold the ^ button.  
OFF will appear on the display.  
To check the status of the active station‐  
ary heater: briefly press the u button.  
#
Keep batteries out of the reach of chil‐  
dren.  
5
6
7
#
If batteries are swallowed, seek medical  
attention immediately.  
#
Climate control 147  
Problems with the remote control for the  
stationary heater/ventilation  
ENVIRONMENTAL NOTE Environmental  
damage due to improper disposal of bat‐  
teries  
+
FAIL ¨ appears on the remote control dis‐  
play  
Possible cause:  
R
The signal transmission between the trans‐  
Batteries contain toxic and corro‐  
mitter and the receiver is malfunctioning.  
sive substances.  
#
#
Change your position in relation to the vehi‐  
cle, moving closer if necessary.  
#
#
Push a pointed object into recess 1.  
FAIL appears on the remote control display  
Slide battery cover 2 backwards in the  
direction of the arrow.  
Insert new battery 3 with the lettering  
facing upwards.  
Slide battery cover 2 in the opposite direc‐  
tion to the arrow onto the remote control  
until the battery cover engages.  
Take discharged batteries to a  
qualified specialist workshop or to a  
collection point for used batteries.  
Possible cause:  
R
#
#
The starter battery is not sufficiently  
charged.  
Requirements:  
#
Charge the starter battery.  
R
a CR2450 lithium battery  
Possible cause:  
R
The fuel tank content is below the reserve  
fuel level.  
#
Refuel at the nearest filling station.  
148 Climate control  
Adjusting the rear air vents  
To guarantee the flow of fresh air through the air  
vents into the vehicle interior, comply with the  
following:  
FAIL ¯ appears on the remote control dis‐  
play  
Possible cause:  
R
Always keep the vents and vent grilles in the  
vehicle interior free.  
R
There is a malfunction in the stationary  
heater.  
R
Keep the air inlet free of deposits  
(/ page 379).  
#
Have the stationary heater checked at a  
qualified specialist workshop.  
Air vents  
Adjusting the front air vents  
#
To open or close: turn controller 2 to the  
left or right as far as it will go.  
To set the airflow direction: hold air  
&
WARNING Risk of burns and frostbite  
due to being too close to the air vents  
#
vent 1 in the centre and move it up or down  
or to the left or right.  
Very hot or very cold air can flow from the air  
vents.  
#
Make sure that all vehicle occupants  
always maintain a sufficient distance  
from the air vents.  
If necessary, direct the airflow to  
another area of the vehicle interior.  
#
To open or close: hold air vent 1 in the  
centre and turn it to the left (open) or right  
(closed) as far as it will go.  
To set the airflow direction: hold air  
vent 1 in the centre and move it up or down  
or to the left or right.  
#
#
Driving and parking 149  
Switching on the power supply or the igni‐  
tion (without engine start)  
#
#
Driving  
When leaving the vehicle, always take  
the key with you and lock the vehicle.  
Keep the key out of reach of children.  
Notes on Mercedes-AMG vehicles  
&
WARNING Risk of accident and injury  
due to children left unattended in the  
vehicle  
Observe the notes on the following topics in the  
Supplement, otherwise you may fail to recognise  
dangers.  
This also applies to the Digital Vehicle Key  
sticker.  
Requirements:  
% The availability of certain functions depends  
If children are left unsupervised in the vehi‐  
cle, they could, in particular:  
on the equipment and model of the vehicle.  
R
the key is in the vehicle and is recognised.  
R
Emotion Start  
R
open doors, thereby endangering other  
persons or road users.  
R
or: a Digital Vehicle Key sticker is located in  
the marked space (/ page 151).  
R
Rear axle locking differential  
R
get out and be struck by oncoming traf‐  
fic.  
R
AMG Performance exhaust system  
R
Vehicles with automatic transmission: the  
brake pedal is not depressed.  
R
AMG ceramic high-performance composite  
brake system  
R
operate vehicle equipment and become  
trapped, for example.  
R
Vehicles with manual transmission: the  
clutch pedal is not depressed.  
R
Traction control  
In addition, the children could also set the  
vehicle in motion, for example by:  
R
RACE START  
AMG RIDE CONTROL  
AMG steering-wheel buttons  
R
R
releasing the parking brake.  
R
R
changing the transmission position.  
R
starting the vehicle.  
#
Never leave children unattended in the  
vehicle.  
150 Driving and parking  
#
Starting the vehicle  
To switch on the ignition: press button 1  
twice.  
Starting the vehicle with the start/stop but‐  
ton  
The indicator lamps in the instrument cluster  
light up.  
The ignition is switched off again if one of the  
following conditions is met:  
&
DANGER Risk of death caused by  
exhaust gases  
R
vehicles with automatic transmission:you  
Combustion engines emit poisonous exhaust  
gases such as carbon monoxide. Inhaling  
these exhaust gases is hazardous to health  
and leads to poisoning.  
do not start the vehicle within 15 minutes  
and the transmission is in position j or the  
electric parking brake is applied.  
Vehicles with manual transmission: you  
do not start the vehicle within 15 minutes  
and the electric parking brake is applied.  
R
#
Never leave the engine or, if present,  
the auxiliary heating running in an  
enclosed space without sufficient venti‐  
lation.  
R
you press button 1 once.  
#
To switch on the power supply: press but‐  
ton 1 once.  
You can activate the windscreen wiper, for  
example.  
&
WARNING Risk of fire due to flammable  
material in the engine compartment or  
the exhaust system  
Flammable materials may ignite.  
#
The power supply is switched off again if the fol‐  
lowing conditions are met:  
Therefore, check regularly that there  
are no flammable materials in the  
engine compartment or on the exhaust  
system.  
R
You open the driver's door.  
you press button 1 twice more.  
R
Driving and parking 151  
#
Requirements:  
Using the Digital Vehicle Key sticker for the  
first time  
Key not detected Place smartphone in charg-  
ing bracket: place the mobile phone in the  
marked space (/ page 118).  
R
the key is in the vehicle and is recognised.  
R
or: a Digital Vehicle Key sticker is located in  
% You can switch off the engine while driving  
by pressing button 1 for about three sec‐  
onds or by pressing button 1 three times  
within three seconds. Be sure to observe the  
safety notes under "Driving tips"  
the marked space and is recognised  
(/ page 151).  
#
Vehicles with manual transmission:  
depress the clutch pedal.  
(/ page 155).  
#
Vehicles with automatic transmission:  
shift the transmission to position j or i.  
Depress the brake pedal and press button  
1 once.  
Starting the vehicle with a Digital Vehicle  
Key sticker  
Requirements:  
#
#
If the vehicle does not start: switch off non-  
R
the vehicle is equipped with the "Digital Vehi‐  
essential consumers and press button 1  
cle Key" function  
once.  
R
a Digital Vehicle Key sticker is present  
If the vehicle still does not start, one of the fol‐  
lowing display messages appears in the multi‐  
function display:  
% Affix the Digital Vehicle Key sticker on your  
smartphone; see Supplement.  
#
Deactivate the key 2 (/ page 71).  
% Mercedes-Benz recommends that you carry  
the emergency key in case of function  
restrictions.  
#
#
Place the key 2 in the marked space 3 on  
the symbol 4.  
Place the key in the marked space See Own-  
er's Manual: Starting the vehicle with the key  
in the marked space (emergency operation  
mode) (/ page 152).  
#
Place the Digital Vehicle Key sticker in the  
marked space 1.  
or  
#
Start the vehicle using the start/stop button.  
152 Driving and parking  
Any further starts with the Digital Vehicle  
Key sticker  
The key is not needed for any further starts.  
must be located in the marked space 2 on  
the symbol 3 during the entire journey.  
#
Have the key 1checked at a qualified spe‐  
cialist workshop.  
#
Place the Digital Vehicle Key sticker in the  
marked space 1.  
If the vehicle does not start:  
#
Start the vehicle using the start/stop button.  
#
place the key 1 in the marked space 2  
and leave it there.  
Vehicles with manual transmission:  
depress the clutch pedal.  
If the Digital Vehicle Key sticker gets stolen, the  
key function can be deactivated at a Mercedes-  
Benz service centre.  
#
#
Starting the vehicle with the key in the  
marked space (emergency operation mode)  
If the vehicle does not start and the Place the  
key in the marked space See Owner's Manual  
message appears in the multifunction display,  
you can start the vehicle in emergency operation  
mode.  
Depress the brake pedal and start the vehi‐  
cle using the start/stop button.  
% You can also switch on the power supply or  
the ignition with the start/stop button.  
#
Make sure that the marked space 2 is  
Starting the vehicle via Remote Online serv‐  
ices  
empty.  
#
#
Remove the key 1 from the key ring.  
Cooling or heating the vehicle interior before  
commencing your journey  
Place the key 1 in the marked space 2 on  
the symbol 3.  
The vehicle will start after a short time.  
If you remove the key 1 from the marked  
space 2 the engine continues running. For  
further engine starts however, the key 1  
Ensure the following before starting the engine:  
R
the legal stipulations in the area where your  
vehicle is parked allow engine starting via  
smartphone.  
Driving and parking 153  
#
R
Starting the vehicle (Remote Online)  
it is safe to start and run the engine where  
your vehicle is parked.  
The fuel tank is sufficiently full.  
Start the vehicle using the smartphone.  
After every engine start, the engine runs for  
ten minutes.  
&
WARNING Risk of crushing or entrap‐  
ment due to unintentional starting of the  
engine  
R
R
The starter battery is sufficiently charged.  
You can carry out a maximum of two consecu‐  
tive starting attempts. You must start the vehicle  
once with the key before trying to start the  
engine again with the smartphone. you can stop  
the vehicle again at any time.  
Charging the starter battery before starting  
the journey  
If the vehicle battery is discharged, you can  
receive a message on your smartphone. You can  
then start the vehicle with the smartphone to  
charge the battery. The vehicle is automatically  
switched off after ten minutes.  
Limbs could be crushed or trapped if the  
engine is started unintentionally during  
service or maintenance work.  
#
Always secure the engine against unin‐  
% Further information can be found in the  
tentional starting before carrying out  
maintenance or repair work.  
smartphone app.  
Securing the engine against starting before  
carrying out maintenance or repair work:  
Ensure the following before starting the engine:  
R
Requirements:  
#
switch on the hazard warning light system.  
the legal stipulations in the area where your  
vehicle is parked allow engine starting via  
smartphone.  
it is safe to start and run the engine where  
your vehicle is parked.  
R
park position j is selected.  
or  
#
R
the anti-theft alarm system is not activated.  
unlock the doors.  
R
the panic alarm is not activated.  
R
or  
#
R
the hazard warning light system is switched  
off.  
open a side window or the sliding sunroof.  
R
The fuel tank is sufficiently full.  
R
The bonnet is closed.  
R
the doors are closed and locked.  
R
the windows and sliding sunroof are closed.  
154 Driving and parking  
Running-in notes  
R
R
Notes on optimised acceleration  
vehicles with automatic transmission: do  
not depress the accelerator pedal beyond the  
pressure point (kickdown).  
only increase the engine speed gradually and  
accelerate the vehicle to full speed after  
1,500 km.  
If all necessary requirements and activation con‐  
ditions are fulfilled, the best possible accelera‐  
tion can be achieved from a standstill.  
Do not use the optimised acceleration on public  
roads. Individual wheels could spin and you  
could lose control of the vehicle. There is an  
increased risk of skidding and/or accident.  
NOTE Mercedes-AMG vehicles  
*
#
Observe the notes in the Supplement.  
You could otherwise fail to recognise  
dangers.  
This also applies when the engine or parts of the  
drivetrain have been replaced.  
Please also observe the following running-in  
notes:  
To preserve the engine during the first 1,500 km:  
R
drive at varying road speeds and engine  
speeds.  
Be sure to observe the safety notes and informa‐  
tion on ESP® (/ page 186).  
R
do not drive at speeds greater than  
140 km/h.  
R
in certain driving and driving safety systems,  
the sensors adjust automatically while a cer‐  
tain distance is being driven after the vehicle  
has been delivered or after repairs. Full sys‐  
tem effectiveness is not reached until the  
end of this teach-in process.  
Pulling away with optimised acceleration  
R
drive the vehicle in drive program A  
or ;.  
&
WARNING Risk of skidding and having  
an accident from wheels spinning  
R
shift to the next highest gear at the very lat‐  
est when the needle reaches the last third  
before the red area in the rev counter.  
When you use optimised acceleration, indi‐  
vidual wheels could spin and you could lose  
control of the vehicle.  
If ESP® is deactivated, there is a risk of skid‐  
ding and accident!  
R
brakepads, brake discs and tyres that are  
either new or have been replaced only ach‐  
ieve optimum braking effect and grip after  
several hundred kilometres of driving. Com‐  
pensate for the reduced braking effect by  
applying greater force to the brake pedal.  
R
do not shift down a gear manually in order to  
brake.  
R
avoid overstraining the vehicle, e.g. driving at  
full throttle.  
#
Make sure that no persons or obstacles  
are in the close vicinity of your vehicle.  
Driving and parking 155  
#
#
#
Requirements:  
Notes on driving  
Depress and hold the brake pedal firmly with  
your left foot.  
With your right foot, fully depress the accel‐  
erator pedal.  
After no more than five seconds, take your  
left foot quickly off the brake, but keep the  
accelerator pedal depressed.  
The vehicle pulls away at maximum accelera‐  
tion.  
Switch on ESP® once the acceleration proce‐  
dure is complete.  
R
The vehicle is run in (/ page 154).  
&
WARNING Risk of accident due to  
objects in the driver's footwell  
R
the vehicle and tyres are in good condition.  
R
you are on a high-grip roadway.  
Objects in the driver's footwell may impede  
pedal travel or block a depressed pedal.  
This jeopardises the operating and road  
safety of the vehicle.  
R
the engine and transmission are at normal  
operating temperature.  
NOTE Increased wear due to optimised  
acceleration  
*
#
Stow all objects in the vehicle securely  
#
so that they cannot get into the driver's  
footwell.  
When pulling away with optimised accelera‐  
tion, all components of the drivetrain are  
subjected to a very high load.  
#
Always fit the floor mats securely and  
Ending optimised acceleration  
#
as prescribed in order to ensure that  
there is always sufficient room for the  
pedals.  
Remove your foot from the accelerator pedal.  
Reactivate the ESP®.  
This can lead to increased component wear.  
#
#
Do not always pull away with optimised  
acceleration.  
% After you pull away with optimised accelera‐  
tion, components of the drivetrain can  
become very hot, which means that opti‐  
mised acceleration values may be reached  
again only after a few minutes.  
#
Do not use loose floor mats and do not  
place floor mats on top of one another.  
#
Engage the h drive position (/ page 167).  
#
#
#
Move the steering wheel to the straight-  
ahead position.  
Select the sportiest available drive program  
B or C(/ page 163).  
Deactivating ESP® (/ page 187).  
156 Driving and parking  
&
&
&
WARNING Risk of accident due to incor‐  
rect footwear  
DANGER Risk of death caused by  
exhaust gases  
DANGER Risk of fatal injury due to poi‐  
sonous exhaust gases  
Incorrect footwear includes, for example:  
Combustion engines emit poisonous exhaust  
gases such as carbon monoxide. Inhaling  
these exhaust gases is hazardous to health  
and leads to poisoning.  
If the tailpipe is blocked or sufficient ventila‐  
tion is not possible, poisonous exhaust gases  
such as carbon monoxide may enter the vehi‐  
cle. This is the case when the vehicle  
R
shoes with platform soles  
R
shoes with high heels  
R
slippers  
becomes stuck in snow, for example.  
#
Never leave the engine or, if present,  
#
the auxiliary heating running in an  
enclosed space without sufficient venti‐  
lation.  
Keep the tailpipe and the area around  
#
Always wear suitable footwear so that  
you can operate the pedals safely.  
the vehicle free from snow when the  
engine or the stationary heater are run‐  
ning.  
&
WARNING Risk of accident if the ignition  
is switched off while driving  
#
Open a window on the side of the vehi‐  
&
WARNING Risk of skidding and of an  
accident due to shifting down on slippery  
road surfaces  
cle facing away from the wind to ensure  
an adequate supply of fresh air.  
If you switch off the ignition while driving,  
safety functions are restricted or no longer  
available.  
You will then need, for example, to use con‐  
siderably more force to steer and brake.  
If you shift down on slippery road surfaces to  
increase the engine braking effect, the drive  
wheels may lose traction.  
&
WARNING Risk of accident due to the  
brake system overheating  
#
Do not shift down on slippery road sur‐  
If you leave your foot on the brake pedal  
when driving, the brake system may over‐  
heat.  
#
Do not switch off the ignition while driv‐  
ing.  
faces to increase the engine braking  
effect.  
This increases the braking distance and the  
brake system may even fail.  
Driving and parking 157  
Therefore, observe the following notes:  
#
#
Never use the brake pedal as a footrest.  
NOTE Damage to the drivetrain and  
engine when pulling away  
*
R
due to salt build-up on the brake disks and  
brakepads, the braking distance can increase  
considerably or result in braking only on one  
side  
Do not depress the brake pedal and the  
accelerator pedal at the same time  
while driving.  
#
Do not warm up the engine while the  
vehicle is stationary. Pull away immedi‐  
ately.  
Avoid high engine speeds and driving at  
full throttle until the engine has reached  
its operating temperature.  
R
maintain a much greater safe distance to the  
vehicle in front  
NOTE Engine damage due to excessively  
high engine speeds  
*
#
To remove salt build-up:  
The engine will be damaged if you drive with  
the engine in the overrevving range.  
R
brake occasionally while paying attention to  
the traffic conditions  
NOTE Damage to the catalytic converter  
due to non-combusted fuel  
*
#
Do not drive with the engine in the over‐  
revving range.  
R
carefully depress the brake pedal at the end  
of the journey and when starting the next  
journey  
The engine is not running smoothly and is  
misfiring.  
Non-combusted fuel may get into the cata‐  
lytic converter.  
NOTE Causing wear to the brake linings  
by permanently depressing the brake  
pedal  
*
Notes on aquaplaning  
Aquaplaning can take place once a certain  
amount of water has accumulated on the road  
surface.  
Observe the following notes during heavy precip‐  
itation or in conditions in which aquaplaning may  
occur:  
#
#
#
Do not permanently depress the brake  
pedal while driving.  
To use braking effect of the engine,  
shift to a lower gear in good time.  
Only depress the accelerator pedal  
slightly.  
#
Have the cause rectified immediately at  
a qualified specialist workshop.  
R
Notes on driving on salt-treated roads  
The braking effect is limited on salt-treated  
roads.  
reduce speed  
avoid tyre ruts  
R
158 Driving and parking  
R
avoid sudden steering movements  
brake carefully  
the traffic conditions until braking power has  
been fully restored.  
tion i when travelling at a low speed and  
then release the clutch pedal.  
R
R vehicles with automatic transmission:  
you brake the vehicle to a standstill in trans‐  
mission position h or i.  
R vehicles with automatic transmission  
and a 48 V on-board electrical system:  
you depress the brake pedal when travelling  
at a low speed.  
% Also observe the notes on regularly checking  
wheels and tyres (/ page 409).  
ECO start/stop function  
Operation of the ECO start/stop function  
Notes on driving through water on the road  
surface  
Water which has entered into the vehicle can  
damage the engine, electrics and transmission.  
Water can also enter the air intake of the engine  
and cause engine damage.  
Observe the following if you must drive through  
water:  
NOTE Mercedes-AMG vehicles  
*
#
Observe the notes in the Supplement.  
You could otherwise fail to recognise  
dangers.  
If the system has detected one of the following  
situations, the engine will not stop:  
R
Mercedes-AMG vehicles: observe the notes in  
the Supplement. You could otherwise fail to rec‐  
ognise dangers.  
% The ECO start/stop function is available only  
in the C, A, ; and = drive pro‐  
grams (depending on the setting).  
If all vehicle-related conditions for an automatic  
engine stop are met, the engine is switched off  
automatically:  
you stop at a stop sign and there is no vehi‐  
cle in front of you.  
R
The water, when calm, may only reach the  
lower edge of the vehicle body.  
R
the vehicle that stopped in front of you starts  
up again.  
R
Drive at walking pace at most, otherwise  
R
you manoeuvre, turn the steering wheel  
sharply or engage reverse gear.  
water can enter the vehicle interior or engine  
compartment.  
% When the HOLD function is active and in  
transmission position j, the engine can  
stop in spite of an intelligent stop inhibitor.  
R
Vehicles travelling in front, or oncoming vehi‐  
cles, can create waves which may exceed the  
maximum permissible depth of the water.  
R
vehicles with manual transmission: you  
brake the vehicle, shift to transmission posi‐  
The braking effect of the brakes is reduced after  
fording. Brake carefully while paying attention to  
Driving and parking 159  
R
R
Deactivating or activating the ECO start/  
stop function  
The engine is restarted automatically if:  
the symbol ç (yellow) appears when the  
vehicle is at a standstill: not all vehicle condi‐  
tions for an engine stop have been met.  
R
vehicles with manual transmission: you  
depress the clutch pedal.  
neither the symbol è nor ç appears  
when the vehicle is at a standstill: an intelli‐  
gent stop inhibitor was detected, e.g. a stop  
sign.  
R vehicles with automatic transmission:  
you shift into transmission position h or  
k.  
R
you depress the accelerator pedal.  
If the engine was switched off by the ECO start/  
stop function and you leave the vehicle, a warn‐  
ing tone sounds and the engine is not restarted.  
In addition, the display message Vehicle is  
operational Switch off ignition before exiting  
appears in the multifunction display. If you do  
not switch off the ignition, the ignition is auto‐  
matically switched off after three minutes.  
R
an automatic engine start is required by the  
vehicle.  
R vehicles with automatic transmission  
and a 48 V on-board electrical system:  
-
you release the brake pedal on a downhill  
gradient and the vehicle does not roll.  
-
the vehicle rolls downhill; at 20 km/h  
glide mode is not activated automatically.  
ECO start/stop function symbols in the multi‐  
function display:  
#
Press button 1.  
R
the symbol è (green) appears when the  
vehicle is at a standstill: the engine was  
If indicator lamp 2 lights up, the ECO start/  
stop function is activated.  
switched off by the ECO start/stop function.  
% Depending on the model and the vehicle  
equipment, the button may also be located  
at a different position in the centre console.  
160 Driving and parking  
ECO display function  
The inner segment will light up and the outer  
segment will fill up when the following driving  
style is adopted:  
from start. The range displayed does not indicate  
a fixed reduction in consumption.  
The ECO display summarises your driving char‐  
acteristics from the start of the journey to its  
completion and assists you in achieving the  
most economical driving style.  
You can influence consumption by doing the fol‐  
lowing:  
R
1 Moderate acceleration  
ECO Assist function  
R
2 Gentle deceleration and rolling  
NOTE Plug-in hybrid  
*
R
3 Consistent speed  
#
Observe the notes in the Supplement.  
You could otherwise fail to recognise  
dangers.  
The inner segment will not light up and the outer  
segment will empty when the following driving  
style is adopted:  
R
Driving with particular care  
R
Driving the vehicle in drive program ;  
R
Observing the gearshift recommendations  
R
1 Sporty acceleration  
ECO Assist analyses data for the vehicle's expec‐  
ted route. This allows the system to optimally  
adjust the driving style for the route ahead, save  
fuel and recuperate. If the system detects an  
event ahead, e.g. a speed limit or a roundabout,  
it will appear on the multifunction display. The  
following symbols can be displayed:  
R
2 Heavy braking  
R
3 Fluctuations in speed  
The ECO display will show you when you have  
driven economically:  
R
The three outer segments are completely fil‐  
led simultaneously.  
R
The ECO display lights up.  
The additional range achieved as a result of your  
driving style in comparison with a driver with a  
very sporty driving style is shown under Bonus  
Driving and parking 161  
The segments of distance display 2 show the  
distance to the event ahead as follows:  
Foot off the accelerator prompt, the segments  
will remain white.  
R
A few segments light up: the event ahead is  
If the event involves a vehicle in front, all seg‐  
ments will immediately turn green once there is  
a response to the Foot off the accelerator  
prompt.  
near.  
R
Many segments light up: the event ahead is  
further away.  
For active ECO Assist in drive program ;,  
symbol 3 will appear on the multifunction dis‐  
play and on the head-up display beside transmis‐  
sion position h. Symbol 3 will also appear  
when the assistant display is not selected.  
If the system does not intervene during the  
event ahead, nothing will be displayed. The sys‐  
tem will be passive.  
When the vehicle nears the event, ECO Assist  
will calculate the optimal speed for maximum  
fuel economy and recuperative energy based on  
the distance, speed and gradient. The Foot off  
the accelerator 3 message will appear on the  
multifunction display. The first segments in front  
of the vehicle will turn green. The remaining seg‐  
ments will initially stay white. If the driver takes  
their foot off the accelerator pedal in good time,  
the remaining segments on the display will suc‐  
cessively turn green until the event shown is  
reached. The drivetrain will be set for maximum  
fuel economy. Recuperation will charge the bat‐  
tery. Recuperation will be adapted to the selec‐  
ted drive program.  
Examples of an event ahead  
ECO Assist is active only in drive programs ;  
and A.  
System limits  
ECO Assist can function even more precisely if  
the route is adhered to when route guidance is  
active. The basic function is also available with‐  
out active route guidance. Not all information  
and traffic situations can be foreseen. The qual‐  
ity depends on the map data.  
1
2
3
Event ahead  
Distance display for the event ahead  
"Foot off the accelerator" prompt  
The event will be shown for a short time after it  
has been passed. If there is no response to the  

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