reset MERCEDES-BENZ CLS 2018 User Guide

pants – particularly children – could become
trapped. There is a risk of injury.
While the memory function is making adjust-
ments, make sure that no one has any body
parts in the sweep of the seat or steering
wheel. If somebody becomes trapped, imme-
diately release the memory function position
button. The adjustment process is stopped.
The memory function can be used at any time,
e.g. even when the SmartKey is not in the igni-
tion lock.
Storing settings With the memory function, you can store up to
three different settings, e.g. for three different
people.
The following settings are stored as a single
memory preset: R
position of the seat, backrest and head
restraint R
active multicontour seat: seat contour,
dynamic function level R
driver's side: position of the exterior mirrors
on the driver's and front-passenger sides
X
Adjust the seat ( Y
page 94).X
On the driver's side, adjust the steering wheel
( Y
page 99) and the exterior mirrors
( Y
page 101).X
Press memory button M and then press one of
the memory position buttons 1 , 2 or 3 within
three seconds.
The settings are stored in the selected preset
position. A tone sounds when the settings
have been completed. Calling up a stored setting X
Press and hold the relevant memory position
switch 1 , 2 or 3 , until the seat, steering wheel
and exterior mirrors are in the stored position.
i The setting procedure is interrupted as soon
as you release the storage position button.104
Memory function
Seats, steering wheel and mirrors

change dynamically at the beginning of the
journey. On longer journeys, there are fewer
changes. For more dynamic changes, carry
out a manual reset.
For further information on the ECO display, see
( Y
page 191).
Braking
Important safety notes
G WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
Downhill gradients
! On long and steep gradients, you must
reduce the load on the brakes by shifting to a
lower gear in good time. This allows you to
take advantage of the engine's braking effect.
This helps you to avoid overheating the
brakes and wearing them out excessively.
When you take advantage of engine braking, a
drive wheel may not turn for some time, e.g.
on a slippery road surface. This could cause
damage to the drive train. This type of damage
is not covered by the Mercedes-Benz war-
ranty.
Change into a lower gear in good time on long
and steep downhill gradients. This is especially
important if the vehicle is laden.
Heavy and light loads
G WARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This
increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest. Never
depress the brake pedal and the accelerator
pedal at the same time. ! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately, but
drive on for a short while. This allows the airflow
to cool the brakes more quickly.
Wet roads If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
Limited braking performance on salt-
treated roads If you drive on salted roads, a layer of salt resi-
due may form on the brake discs and brake
pads. This can result in a significantly longer
braking distance. R
In order to prevent any salt build-up, apply the
brakes occasionally while paying attention to
the traffic conditions. R
Carefully depress the brake pedal and the
beginning and end of a journey. R
Maintain a greater distance to the vehicle
ahead.
Servicing the brakes
! The brake fluid level may be too low, if: R
if the red brake warning lamp lights up in
the instrument cluster and R
you hear a warning tone while the engine is
running
Observe additional warning messages in the
multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines. Driving tips 145
Driving and parking Z

Trip computer "From Start" or "From
Reset"
C
DistanceD
Driving time

You can reset the values of the following func-
tions: R
Trip odometer R
"From Start" trip computer R
"From Reset" trip computer R
ECO display
i If you reset the values in the ECO display,
the values in the "From Start" trip computer
are also reset. If you reset the values in the
"From Start" trip computer, the values in the
ECO display are also reset.
Navigation system menu
Displaying navigation instructions In the Navi menu, the multifunction display
shows navigation instructions.
Observe the additional information on naviga-
tion in the Digital Operator's Manual of the mul-
timedia system. X
Switch on the multimedia system. X
Press the Y or e button on the steering
wheel to select the Navi menu.
Route guidance not active
C
Direction of travelD
Current road
Route guidance active
No change of direction announced
C
Distance to destination
D
Distance to the next change of direction

able to complete the next two changes of direc-
tion without changing lane.
Other status indicators of the naviga-
tion system
The navigation system displays additional infor-
mation and the vehicle status.
Possible displays: R
New Route... or Calculating Route
A new route is calculated. R
Road Not Mapped
The vehicle position is inside the area of the
digital map but the road is not recognized, e.g.
newly built streets, car parks or private land. R
No Route
No route could be calculated to the selected
destination. R
K : you have reached the destination or an
intermediate destination.
Audio menu
Selecting a radio station
C
Active station list
D
Station frequency with memory position
The menu shows station D with station fre-
quency or station name. The preset position is
only displayed along with station D if this has
been stored. X
Switch on the multimedia system and select
Radio. X
Press the Y or e button on the steering
wheel to select the Audio menu. X
To select a preset list or station list: press
and briefly hold the c or d button until
the preset list or station list in the desired
frequency range is shown. X
To select a station: briefly press c
or d .
i SIRIUS XM satellite radio functions like a
normal radio.
For more information on radio operation, see
"Satellite radio" in the separate operating
instructions.
Operating an audio player or audio
media
Audio data from various audio devices or media
can be played, depending on the equipment
installed in the vehicle. X
Switch on the multimedia system and select
audio CD or MP3 mode. X
Press the Y or e button on the steering
wheel to select the Audio menu.X
To select the next/previous track: briefly
press the c or d button.X
To select a track from the track list (rapid
scrolling): press and hold the c or d
button until desired track C appears.
If you press and hold c or d , the rapid
scrolling speed is increased. Not all audio
drives or data carriers support this function.
If track information is stored on the audio
device or medium, the multifunction display
will show the number and title of the track.
Video DVD operationMenus and submenus 193
On-board computer and displays Z

any body parts in the sweep of the steering
wheel.
If somebody becomes trapped: R
press one of the memory function position
buttons, or R
move the switch for steering wheel adjust-
ment in the opposite direction to that in
which the steering wheel is moving.
The adjustment process is stopped. X
Press the Y or e button on the steering
wheel to select the Sett. menu.X
Press the d or c button to select the
Convenience submenu.X
Press v to confirm.X
Using d or c , select the Easy Entry/
Exit function.
If the Easy Entry/Exit function is activated,
the vehicle steering wheel is displayed in
orange in the multifunction display. X
Press the v button to save the setting.
Further information on the EASY-ENTRY/EXIT
feature ( Y
page 100).
Switching the seat belt adjustment on/off X
Press the Y or e button on the steering
wheel to select the Sett. menu.X
Press the d or c button to select the
Convenience submenu.X
Press v to confirm.X
Press the d or c button to select the
Belt Adjustment function.
When the Belt Adjustment function is acti-
vated, the seat belt is displayed in orange in
the multifunction display. X
Press the v button to save the setting.
For further information on belt adjustment, see
( Y
page 45).
Switching the fold-in mirrors when lock-
ing feature on/off
This function is only available when the vehicle is
equipped with the electrical fold-in function.
When you switch on the Auto. Mirror Fold‐
ing function, the exterior mirrors are folded in
when the vehicle is locked. If you unlock the
vehicle and then open the driver's or front-
passenger door, the exterior mirrors fold out
again. X
Press the Y or e button on the steering
wheel to select the Settings menu.X
Press the d or c button to select the
Convenience submenu. X
Press v to confirm. X
Press the d or c button to select the
Auto. Mirror Folding function.
If the Auto. Mirror Folding function is
switched on, the multifunction display shows
the vehicle's exterior mirror in orange. X
Press the v button to save the setting.
If you have switched on the Auto. Mirror
Folding function and you fold in the exterior
mirrors by pressing button C , the exterior mir-
rors will not fold out automatically ( Y
page 101).
You can then only fold out the exterior mirrors
using button C .
Restoring the factory settings X
Press the Y or e button on the steering
wheel to select the Sett. menu.X
Press the d or c button to select the
Factory Setting submenu.X
Press v to confirm.
The Reset All Settings? function
appears. X
Press the d or c button to select No or
Yes . X
Press v to confirm the selection.
If you have selected Yes and confirmed, the
multifunction display shows a confirmation
message.
For safety reasons, the Day Lights function in
the Lights submenu is only reset if the vehicle
is stationary.200
Menus and submenus
On-board computer and displays

Displaying service messages X
Switc h on th e ignition .X
Press th e Y or e butto n on th e steerin g
whee l to selec t th e Serv. menu.X
Press th e c or d butto n to selec t th e
ASSYST PLU S submen u and confirm by press-
in g th e v button.
The servic e due dat e appears in th e multi-
function display.
Information about Service Resetting th e ASSYS T PLUS service inter -
va l display
! If th e ASSYST PLU S servic e interval display
has bee n inadvertentl y reset , this setting can
be correcte d at a qualified specialis t work-
shop.
Hav e servic e wor k carrie d out as described in
th e Maintenance Booklet . Thi s may otherwise
lead to increase d wear and damage to th e
major assemblies or th e vehicle.
A qualified specialis t workshop , e.g. an author -
ized Mercedes-Ben z Center, will reset th e
ASSYST PLU S servic e interval display after th e
servic e wor k has bee n carrie d out . You can also
obtain further information on maintenance
work, fo r example.
Specia l service requirement sThe specifie d maintenance interval take s only
th e normal operation of th e vehicle into
account. Under arduous operatin g condition s or
increase d load on th e vehicle, maintenance
wor k mus t be carrie d out more frequently, fo r
example: R
regular city drivin g wit h frequent intermediate
stops R
if th e vehicle is primarily used to trave l short
distances R
use in mountainous terrain or on poo r road
surfaces R
if th e engin e is ofte n lef t idling fo r lon g periods
Under these o r similar conditions, have, fo r
e xample, th e air filter, engin e oil and oil filte r
replaced or changed more frequently. Under
arduous operatin g conditions, th e tires mus t be
checke d more often. Further information can be
obtained at a qualified specialis t workshop , e.g.
an authorized Mercedes-Ben z Center. Drivin g abroadAn extensive Mercedes-Ben z Servic e networ k is
also available in other countries. You can obtain
further information from any authorized
Mercedes-Ben z Center.
Car e
General notes
H Environmental not e
Dispose of empty packagin g and cleanin g
cloths in an environmentally responsible man -
ner.
! Fo r cleanin g your vehicle, do no t use any of
th e following: R
dry, rough or har d clothsR
abrasiv e cleanin g agentsR
solvents R
cleanin g agents containin g solvents
Do no t scrub .
Do no t touch th e surfaces or protective films
wit h har d objects , e.g. a rin g or ic e scraper.
You could otherwise scratch or damage th e
surfaces and protective film.
! Do no t par k your vehicle fo r a lon g period of
time directl y after cleaning, particularly after
cleanin g th e whee l rim wit h whee l cleaner.
Wheel cleaner can lead to th e increase d cor-
rosio n of th e brake discs and pads . Therefore,
drive fo r a fe w minutes after cleaning. By
heatin g up th e brakes, th e brake discs and
pads dry. The vehicle can then be parke d fo r a
lon g period of time.
Regular car e of your vehicle is a condition fo r
retainin g th e qualit y in th e lon g term .
Use car e products and cleanin g agents recom -
mended and approved by Mercedes-Benz.
Washing th e vehicle an d cleaning th e
paintwor k
Automatic car was h
G WARNING
Brakin g efficiency is reduce d after washin g
th e vehicle. There is a ris k of an accident.270
Care
Maintenance and care

Mercedes-Benz. These batteries provide
increased impact protection to prevent vehicle
occupants from suffering acid burns should the
battery be damaged in the event of an accident.
In order for the battery to achieve the maximum
possible service life, it must always be suffi-
ciently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the vehicle.
In this case, have the battery disconnected at a
qualified specialist workshop. You can also
charge the battery with a charger recommended
by Mercedes-Benz. Contact a qualified special-
ist workshop for further information.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly for
short trips or if you leave it standing idle for a
lengthy period. Consult a qualified specialist
workshop if you wish to leave your vehicle
parked for a long period of time.
Remove the SmartKey if you park the vehicle
and do not require any electrical consumers.
The vehicle will then use very little energy, thus
conserving battery power.
If the power supply has been interrupted, e.g. if
you reconnect the battery, you will have to: R
set the clock; see the Digital Operator's Man-
ual
On vehicles with a multimedia system, the
time is set automatically. R
reset the function for folding the exterior mir-
rors in/out automatically, by folding the mir-
rors out once ( Y
page 101).
Charging the battery
! Only use battery chargers with a maximum
charging voltage of 14.8 V.
G WARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a
risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over a battery.
G WARNING
Battery acid is caustic. There is a risk of injury. Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean over
the battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion.
G WARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only charge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment ( Y
page 285).X
Open the hood. X
Connect the battery charger to the positive
terminal and ground point in the same order
as when connecting the donor battery in the
jump-starting procedure ( Y
page 285).
Keep away from fire and open flames. Do not
lean over a battery. Never charge the battery if it
is still installed in the vehicle, unless you use a
battery charger which has been tested and
approved by Mercedes-Benz. A battery charger
unit specially adapted for Mercedes-Benz vehi-
cles and tested and approved by Mercedes-
Benz is available as an accessory. It permits the
charging of the battery in its installed position.
Contact an authorized Mercedes-Benz Center
for further information and availability. Read the
battery charger's operating instructions before
charging the battery.
If the warning and indicator lamps do not light up
on the instrument cluster when temperatures
are low, it is probably because the discharged
battery has frozen. In this case, you may neither
charge the battery nor jump-start the vehicle.
The service life of a thawed-out battery may be
shorter. The starting characteristics can be
impaired, particularly at low temperatures. Have
the thawed-out battery checked at a qualified
specialist workshop.284
Battery (vehicle)
Breakdown assistance

Removing the towing eye X
Unscrew and remove the towing eye. X
Position cover C on top of the bumper and
press it in at the bottom until it engages. X
Attach cover D to the bumper and press until
it engages. X
Place the towing eye in the vehicle tool kit.
Towing a vehicle with both axles on
the ground It is important that you observe the safety
instructions when towing away your vehicle
( Y
page 287).
The automatic transmission automatically shifts
to position P when you open the driver's or front-
passenger door or when you remove the Smart-
Key from the ignition lock. In order to ensure
that the automatic transmission stays in posi-
tion N when towing the vehicle, you must
observe the following points: X
Make sure that the vehicle is stationary. X
Turn the SmartKey to position 2 in the ignition
lock.
On vehicles with KEYLESS-GO, use the Smart-
Key instead of the Start/Stop button
( Y
page 124). X
Depress and hold the brake pedal. X
Shift the automatic transmission to position
N . X
Release the brake pedal. X
Release the parking brake. X
Switch on the hazard warning lamps
( Y
page 107). X
Leave the SmartKey in position 2 in the igni-
tion lock.
In order to signal a change of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination switch
as usual. In this case, only the turn signals for
the desired direction flash. After resetting the
combination switch, the hazard warning lamp
starts flashing again. Towing the vehicle with the rear axle
raised
! Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised, as
doing so will damage the transmission.
! Vehicles with automatic transmission must
not be towed with the rear axle raised. The
vehicle/trailer combination may otherwise
swerve or even roll over.
Transporting the vehicle
4MATIC vehicles/vehicles with auto-
matic transmission
! When the vehicle is loaded for transport, the
front and rear axles must be stationary and on
the same transportation vehicle. Positioning
over the connection point of the transport
vehicle is not permitted. The drive train may
otherwise be damaged.
All vehicles
! You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
The towing eye can be used to pull the vehicle
onto a trailer or transporter for transporting pur-
poses. X
Turn the SmartKey to position 2 in the ignition
lock. X
Shift the automatic transmission to position
N .Towing and tow-starting 289
Breakdown assistance Z

Tire and Loading Information placard
C
Recommended tire pressures
The Tire and Loading Information placard is on
the B-pillar on the driver's side ( Y
page 302).
The Tire and Loading Information placard con-
tains the recommended tire pressures for cold
tires. The recommended tire pressures are valid
for the maximum permissible load and up to the
maximum permissible vehicle speed.
Tire pressure table The tire pressure table is on the inside of the fuel
filler flap. It shows the tire pressure for all tires
permitted at the factory for this vehicle; see
illustration (example).
The tire pressure table contains the recommen-
ded pressures for cold tires for various operat-
ing conditions, i.e. differing load and speed con-
ditions.
If a tire size precedes a tire pressure, the fol-
lowing tire pressure information is only valid for
that tire size; see illustration (example). The load conditions "partially laden" and "fully
laden" are defined in the table for different num-
bers of occupants and amounts of luggage. The
actual number of seats may differ.
Some tire pressure tables show only the rim
diameters instead of the full tire size, e.g. R18 .
Rim diameter is part of the tire size and can be
found on the tire sidewall ( Y
page 307).
If the tire pressures have been set to the lower
values for lighter loads and/or lower road
speeds, the pressures should be reset to the
higher values: R
if you want to drive with an increased load
and/or R
if you want to drive at higher road speeds
The tire pressures for increased loads and/or
higher road speeds, shown in the tire pressure
table, may have a negative effect on driving
comfort.
If the tire pressure is not set correctly, this can
lead to an excessive build up of heat and a sud-
den loss of pressure.
For more information, contact a qualified spe-
cialist workshop.296
Tire pressure
Wheels and tires