engine MERCEDES-BENZ CLS-Class 2017 W218 Workshop Manual

pedal, the engine starts automatically and the
braking effect of the HOLD function is deac-
tivated.
Automatic engine switch-off can take place a
maximum of four times in a row (initial stop, then
three subsequent stops).
Mercedes-AMG vehicles: the number of con-
secutive automatic engine switch-offs is unlimi- ted.
All other models: automatic engine switch-off
can take place a maximum of four times in a row
(initial switch-off, then three subsequent switch-
offs).
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function by
pressing the ECO button
Rin transmission position Dor Nthe brake
pedal is released and the HOLD function is not
active
Ryou depress the accelerator pedal
Ryou engage reverse gear R
Ryou move the transmission out of position P
Ryou switch to drive programS,S+ orM
(Mercedes-AMG vehicles)
Ryou unfasten your seat belt or open the driv-
er's door
Rthe vehicle starts to roll
Rthe brake system requires this
Rthe temperature in the vehicle interior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on
Rthe battery's condition of charge is too low
iShifting the transmission to position Pdoes
not start the engine.
Deactivating or activating the ECO
start/stop function
Mercedes-AMG vehicles
XTo deactivate: in drive program C, press ECO
button :.
or
XSwitch to drive program S,S+ or
M(Ypage 134).
Indicator lamp ;goes out.
XTo activate: press ECO button :.
Indicator lamp ;lights up.
If drive program S,S+ orMis active, the auto-
matic transmission switches to drive program
C.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will then
not be switched off automatically when the vehi- cle stops.
All other models
XTo deactivate: press ECO button :.
Indicator lamp ;goes out.
XTo activate: press ECO button :.
Indicator lamp ;lights up.
Driving127
Driving and parking
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If indicator lamp;is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will then not be switched off automatically when the vehi-
cle stops.
Problems with the engine
ProblemPossible causes/consequences and
MSolutions
The engine does not
start.The HOLD function or DISTRONIC PLUS is activated.
XDeactivate the HOLD function (Ypage 157) or DISTRONIC PLUS
(Ypage 155).
XTry to start the engine again.
The engine does not
start. The starter motor
can be heard.RThere is a malfunction in the engine electronics.
RThere is a malfunction in the fuel supply.
Before attempting to start the engine again:
XTurn the SmartKey back to position 0in the ignition lock.
or
XPress the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out.
XTry to start the engine again (Ypage 124). Avoid excessively long
and frequent attempts to start the engine as these will drain the
battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak or
discharged.
XJump-start the vehicle (Ypage 285).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
XAllow the starter motor to cool down for approximately two minutes.
XTry to start the engine again.
If the engine still does not start:
XConsult a qualified specialist workshop.
128Driving
Driving and parking

ProblemPossible causes/consequences andMSolutions
The engine is not running
smoothly and is misfir-
ing.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
XHave the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
gauge shows a value
above 248 ‡ (120 †).The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 268). Observe the warning notes
as you do so and add coolant if necessary.
Automatic transmission
Important safety notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
Selector lever (Mercedes-AMG vehi-
cles)
Overview of transmission positions
jPark position with parking lock
kReverse gear
iNeutral
hDrive
Transmission position and drive pro-
gram display
The current transmission position and drive pro-
gram appear in the multifunction display.
Automatic transmission129
Driving and parking
Z

Engaging park position P
!If the engine speed is too high or the vehicle
is moving, do not shift the automatic trans-
mission directly from Dto R, from Rto Dor
directly to P. The automatic transmission
could otherwise be damaged.
XPush the DIRECT SELECT lever in the direction of arrow P.
Transmission position display Pis shown in
the multifunction display.
Depressing the brake and pushing the DIRECT
SELECT lever up or down disengages the park-
ing lock. The transmission is in Nneutral.
In order to shift from park position Pdirectly into
R or D:
Rdepress the brake pedal and
Rpush the DIRECT SELECT lever up or down
past the first point of resistance
Engaging park position P automatically
Park position Pis automatically engaged if:
Ryou switch off the engine using the Smartkey
and remove the SmartKey
Ryou switch off the engine using the Smartkey
or using the Start/Stop button and open the
driver's door or front-passenger door
Rthe driver's door is opened when the vehicle is
stationary or driving at very low speed and the
transmission is in position Dor R
Under certain conditions, the automatic trans-
mission shifts automatically to transmission
position Pif the HOLD function or DISTRONIC
PLUS is activated. Observe the information on
the HOLD function (
Ypage 158) and on
DISTRONIC PLUS (Ypage 153).
Engaging reverse gear R
!Only shift the automatic transmission to R
when the vehicle is stationary.
XIf the transmission is in position Dor N: push
the DIRECT SELECT lever up past the first
point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT
lever up past the first point of resistance.
The ECO start/stop function is not available
when reverse gear is engaged. Further informa- tion on the ECO start/stop function
(
Ypage 126).
Shifting to neutral N
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart 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.
XIf the transmission is in position Dor R: push
the DIRECT SELECT lever up or down to the
first point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever up or down to the first point of resist-
ance.
If you switch the engine off with the transmis-
sion in position Ror D, the automatic transmis-
sion shifts to Nautomatically.
With the Smartkey: if you then open the driv-
er's door or the front-passenger door or remove
the Smartkey from the ignition, the automatic
transmission shifts to Pautomatically.
With KEYLESS-GO: if you then open thedriver's
or f

ront-passenger door, the automatic trans-
mission shifts to P.
If you want the automatic transmission to
remain in neutral N, e.g. when having the vehicle
cleaned in an automatic car wash with a towing system:
Automatic transmission131
Driving and parking
Z

XVehicles with KEYLESS-GO:remove the
Start/Stop button from the ignition lock.
XInsert the Smartkey into the ignition lock.
XAll vehicles: switch the ignition on.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the parking brake.
XSwitch off the ignition and leave the Smartkey
in the ignition lock.
Engaging drive position D
XIf the transmission is in position Ror N: push
the DIRECT SELECT lever down past the first
point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever down past the first point of resistance.
Transmission positions
BPark position
Only shift the transmission into posi-
tion Pwhen the vehicle is stationary
(
Ypage 142). The parking lock
should not be used as a brake when
parking. Always apply the parking
brake in addition to the parking lock
in order to secure the vehicle.
If the vehicle electronics are malfunc-
tioning, the transmission may be
locked in position P. Have the vehicle
electronics checked immediately at a
qualified specialist workshop.
Park position Pis automatically
engaged if:
Ryou switch off the engine using the
SmartKey and remove the Smart-
Key
Ryou switch off the engine using the
SmartKey or using the Start/Stop
button and open the driver's door
or front-passenger door
Rthe driver's door is opened when
the vehicle is stationary or driving
at very low speed and the trans-
mission is in position Dor R
CReverse gear
Only shift the transmission into posi-
tion Rwhen the vehicle is stationary.
132Automatic transmission
Driving and parking

ANeutral
Do not shift the transmission toN
while driving. Otherwise, the auto-
matic transmission could be dam-
aged.
No power is transmitted from the
engine to the drive wheels.
Releasing the brakes will allow you to
move the vehicle freely, e.g. to push
it or tow it.
If ESP
®is deactivated or faulty: shift
the transmission only to position Nif
the vehicle is in danger of skidding,
e.g. on icy roads.
If you switch the engine off with the
transmission in position Ror D, the
automatic transmission shifts to N
automatically.
!Rolling in neutral Ncan damage
the drive train.
7Drive
The automatic transmission changes
gear automatically. All forward gears
are available.
Driving tips
Changing gear
The automatic transmission shifts to the indi-
vidual gears automatically when it is in trans-
mission position D. This automatic gear shifting
behavior is determined by:
Rthe selected drive program
Rthe position of the accelerator pedal
Rthe road speed
Accelerator pedal position
Your style of driving influences how the auto-
matic transmission shifts gear:
Rlittle throttle: early upshifts
Rmore throttle: late upshifts
Mercedes-AMG vehicles
When shifting down, the double-clutch function
is active regardless of the currently selected
drive program. The double-clutch function reduces load change reactions and is conducive
to a sporty driving style. The sound generated by
the double-clutch function depends on the drive
program selected.
Kickdown
Use kickdown for maximum acceleration:
XDepress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to a lower
gear depending on the engine speed.
XEase off the accelerator pedal once the
desired speed is reached.
The automatic transmission shifts back up.
Rocking the vehicle free
Rocking the vehicle free by shifting back and
forth between transmission positions
Dand R
can help to free a vehicle that has become stuck
in mud or snow. The vehicle's engine manage-
ment restricts switching between transmission
positions Dand Rto speeds up to a maximum of
5 mph (9 km/h). To shift back and forth between
transmission positions Dand R, move the
DIRECT SELECT lever up and down past the
point of resistance.
Program selector button
General notes
All vehicles (except Mercedes-AMG vehicles and
vehicles with AMG sports package)
XPress program selector button :repeatedly
until the letter for the desired drive program
appears in the multifunction display.
Automatic transmission133
Driving an d parking
Z

Vehicles with the AMG Sports package
XPress program selector button:repeatedly
until the letter for the desired drive program
appears in the multifunction display.
The program selector button allows you to
choose between different driving characteris-
tics.
iFurther information about permanent drive
program M(Ypage 136).
As well as this permanent drive program M,
you can also activate temporary drive pro-
gram M(
Ypage 135).
EEconomyComfortable, economical
driving
S SportSporty driving style
M ManualManual gear shifting
iFor further information on the automatic
drive program, see (Ypage 135).
iThe automatic transmission shifts to auto-
matic drive program Eeach time the engine is
started.
Mercedes-AMG vehicles
Drive program selector with manual drive program
XTurn drive program selector :until the
desired drive program appears in the multi-
function display in the speedometer.
The drive program indicator on drive program
selector :lights up in red.
iFurther information about permanent drive
program M(Ypage 136).
As well as this permanent drive program M,
you can also activate temporary drive pro-
gram M(
Ypage 135).
CControlled
EfficiencyComfortable, economical
driving
S SportSporty driving style
S+ SportPlusParticularly sporty driving
style
MManualManual gear shifting
RS RACE
STARTOptimal vehicle accelera-
tion from a standstill
iFor further information on the automatic
drive program, see (Ypage 135).
iThe automatic transmission shifts to auto-
matic drive program Ceach time the engine is
started.
iRS cannot be selected during normal driv-
ing. For further information on RACE START,
see (
Ypage 158).
134Automatic transmission
Driving and parking

Steering wheel paddle shifters
In the manual drive program, you can change
gears manually using steering wheel paddle
shifters:and ;.
Further information about permanent drive pro-
gram M(
Ypage 136).
Further information about temporary drive pro-
gram M(
Ypage 135).
iYou can only change gear with the steering
wheel paddle shifters when the transmission
is in position D.
Automatic drive program
Automatic drive program E (C)
Drive program E(drive program Con Mercedes-
AMG vehicles) is characterized by the following:
Rcomfort-oriented engine and automatic trans-
mission settings.
Roptimal fuel consumption resulting from the
automatic transmission shifting up sooner.
Rthe vehicle pulls away more gently in forward
and reverse gears, unless the accelerator
pedal is depressed fully.
Rthe vehicle has improved driving stability, for
example on slippery road surfaces.
Rthe automatic transmission shifting up
sooner. This results in the vehicle being driven
at lower engine speeds and the wheels being
less likely to spin.
Automatic drive program S
Drive program S(or, in the case of Mercedes-
AMG vehicles, drive programs Sand S+) is char-
acterized by the following:
Rsporty engine and automatic transmission
settings.
Rthe automatic transmission shifts up later.
The fuel consumption possibly being higher
as a result of the later automatic transmission shift points.
Manual drive program M
General notes
In this drive program, you can briefly change
gear yourself by using the steering wheel paddle
shifters. The transmission must be in position D.
You can activate manual drive program Min
automatic drive programs E,Cand S.
Mercedes-AMG vehicles and vehicles with
AMG sports package: as well as temporary
drive program Myou can also activate perma-
nent drive program M(
Ypage 133).
Further information about permanent drive pro-
gram M(
Ypage 136).
Activating
XShift the transmission to position D.
XPull the left or right steering wheel paddle
shifter (Ypage 135).
Manual drive program Mis temporarily acti-
vated. The multifunction display shows Mand
the selected gear.
Shifting gears
If you pull on the left or right steering wheel
paddle shifter, the automatic transmission
switches to manual drive program Mfor a limi-
ted amount of time. In cases where it is permis-
sible, the automatic transmission shifts up or
down to the next gear.
XTo shift up: pull the right-hand steering wheel
paddle shifter (Ypage 135).
The automatic transmission shifts up to the
next gear.
iIf the maximum engine speed on the cur-
rently engaged gear is reached and you con-
tinue to accelerate, the automatic transmis-
Automatic transmission135
Driving and parking
Z

sion automatically shifts up in order to pre-
vent engine damage.
XTo shift down:pull on the left-hand steering
wheel paddle shifter (Ypage 135).
The automatic transmission shifts down to
the next gear.
If the engine exceeds the maximum engine
speed when shifting down, the automatic
transmission protects against engine damage
by not shifting down.
iAutomatic down shifting occurs when
coasting.
Shift recommendation
The gearshift recommendations assist you in
adopting an economical driving style. The mul-
tifunction display shows you the recommended
gear.
XShift to recommended gear ;according to
gearshift recommendation :when shown in
the multifunction display.
Deactivating
If you have activated manual drive program M, it
will remain active for a certain amount of time.
Under certain conditions the minimum amount
of time is extended, e.g. in the case of lateral
acceleration, during an overrun phase or when
driving on steep terrain.
If manual drive program Mhas been deactiva-
ted, the automatic transmission shifts into the
automatic drive program that was last selected,
i.e. E,Cor S.
You can also deactivate manual drive program
M yourself:
XPull on the right-hand steering wheel paddle
shifter and hold it in place (Ypage 135).
or
XSwitch the transmission position.
RAll vehicles except Mercedes-AMG vehi-
cles: use the DIRECT SELECT lever
(
Ypage 130)
RMercedes-AMG vehicles: use the lever
(Ypage 129)
or
XChange the drive program.
RAll vehicles except Mercedes-AMG vehi-
cles: use the drive program selector button
(
Ypage 133)
RMercedes-AMG vehicles: use the drive
program selector (Ypage 134)
Manual drive program (Mercedes-
AMG vehicles and vehicles with the
AMG sports package)
General notes
In this drive program, you can permanently
change gear yourself by using the steering
wheel paddle shifters. The transmission must be
in position D.
As well as this permanent drive program M, you
can also activate temporary drive program M
(
Ypage 135).
Switching on the manual drive program
XAll vehicles except Mercedes-AMG vehi-
cles: press the program selector button
repeatedly until drive program Mappears in
the multifunction display (
Ypage 133).
XMercedes-AMG vehicles: turn the drive pro-
gram selector until drive program Mappears
in the multifunction display (
Ypage 134).
The indicator Mon the drive program selector
lights up in red.
Manual drive program Mis different from drive
programs Sand S+with regard to spontaneity,
responsiveness and smoothness of gear
changes.
In manual drive program M, you can change gear
using the steering wheel paddle shifters if the
transmission is in position D. The multifunction
display shows the selected and engaged gear.
136Automatic transmission
Driving and parking

Upshifting
XPull the right-hand steering wheel paddle
shifter.
The automatic transmission shifts up to the
next gear.
Mercedes-AMG vehicles
!In manual drive programM, the automatic
transmission does not shift up automatically
even when the engine limiting speed for the
current gear is reached. When the engine lim-
iting speed is reached, the fuel supply is cut to
prevent the engine from overrevving. Always
make sure that the engine speed does not
reach the red area of the tachometer. There is
otherwise a risk of engine damage.
:Gear indicator
;Upshift indicator
Before the engine speed reaches the red area,
an upshift indicator will be shown in the multi-
function display.
XWhen the UPmessage appears in the multi-
function display, pull on the right-hand steer-
ing wheel paddle shifter.
Shift recommendation
The gearshift recommendations assist you in
adopting an economical driving style. The rec- ommended gear is shown in the multifunction
display.
XIf corresponding gearshift recommenda-
tion
:appears in the multifunction display
on the instrument cluster, pull on the right-
hand steering wheel paddle shifter
(
Ypage 135).
The automatic transmission shifts to recom-
mended gear ;.
Downshifting
XPull the left-hand steering wheel paddle
shifter.
The automatic transmission shifts down to
the next gear.
iIf you brake the vehicle or stop without shift-
ing down, the automatic transmission will
shift down to a gear that will allow the vehicle to accelerate or pull away again.
For maximum acceleration, pull the left-hand
steering wheel paddle shifter until the transmis-
sion selects the optimum gear for the current
speed.
Kickdown
You can also use kickdown for maximum accel-
eration in manual drive program M.
XDepress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to a lower
gear depending on the engine speed.
XShift back up once the desired speed is
reached.
Mercedes-AMG vehicles: it is not possible to
use kickdown in manual drive program M.
Switching off the manual drive program
XPress the program selector button
(Ypage 133).
XMercedes-AMG vehicles:turn the drive pro-
gram selector (Ypage 134).
Automatic transmission137
Driving and parking
Z