2020 MERCEDES-BENZ CLS COUPE bonnet

fi
ed based on the actual operating conditions
and/or loads.
Examples of arduous operating conditions:
R regular city driving with frequent intermedi‐
ate stops
R mainly short-dis tance driving
R frequent operation in mountainous terrain or
on poor road sur faces
R when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil
and oil filter etc. changed more frequent ly. The
ty re s must be checked more frequently if the
ve hicle is operated under increased loads. Fur‐
th er information can be obtained at a qualified
specialist workshop. Battery disconnection periods
The ASS
YST PLUS se rvice inter val display
can only calculate the service due da tewhen
th e bat tery is connected. #
Notedown the service due date displa yed on
th e instrument display before disconnecting
th e battery (/ page 292). Engine compartment
Ac
tive bonn et(pedestrian pr otection) Operation of
the active bonnet (pedestrian
pr otection)
In cer tain accident situations, the actuation of
th e active bonn etreduces therisk of injury to
pedestrians. The rear area of the bonn etis
ra ised byappr oximately 85 mm.
Fo rth e drive tothewo rkshop, reset the actuated
active bonn etyourself (/ page 293).
Af terth e active bonn ethas been actuated,
pedestrian pr otection may be limited.
Ha ve the full functionality of the active bonn et
re stored in a qualified specialist workshop. Re
setting the active bonnet &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. Maintenance and care
293

#
With your hand flat, push down active bonnet
1 inthe area around the hinges on bo th
sides (ar rows).
In doing so, the actuator is depressurised
and you may hear a hissing sound.
The engine bonnet must en gage in position. #
Ifth e active bonn etcan be raised slight lyat
th ere ar in the area of the hinges, repeat the
st ep until it engages cor rectl y. Opening and closing
the bonnet &
WARNING Risk of accident due todriv‐
ing with the bonn etunlo cked
The bonn etmay open and block your vie w. #
Neverre lease the bonn etwhen driving. #
Before every trip, ensure that the
engine bonn etis loc ked. &
WARNING Risk of accident and inju ry
when opening and closing the bonn et
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the bon‐
net's range of mo vement. #
Open or close the bonn etonly when
th ere is nobody in the bonn et's range of
mo vement. &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. &
WARNING Risk of inju rydue tomoving
parts
Components in the engine compartment may
continue running or start up sudden ly,even if
th e ignition is switched off.
Make sure of thefo llowing before per form ing
ta sks in the engine compartmen t: #
Switch the ignition off. #
Neverre ach into the danger zone sur‐
ro unding moving co mponents, e.g. the
ro tation area of thefa n. #
Remo vejewe llery and watches. #
Keep items of clo thing and hair away
from moving parts. &
WARNING Risk of inju ryfrom touching
co mp onents under voltage
The ignition sy stem and the fuel injection
sy stem workunder high voltage. You could
re cei vean electric shoc k.294
Maintenance and care

#
Neverto uch co mponents of the ignition
sy stem or the fuel injection sy stem
when the ignition is switched on. &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in
th efo llowing. &
WARNING Risk of inju ryfrom using the
windscreen wipers while the engine bon‐
net is open
When the engine bonn etis open, and the
windscreen wipers are set in motion, you can
be trapped bythe wiper linkage. #
Alw ays switch off the windscreen wip‐
ers and ignition before opening the
engine bonn et. Opening
the bonnet #
Torelease the bonn et, pull on handle 1. #
Push handle 1ofthe bonn etcatch up wards
and lift the bonn etby appr oximately 40 cm.
Closing the bonnet #
Lowe rth e bonn etto a height of around
20 cm and then allow it tofall, applying a lit‐
tle forc e as you let it go. Main
tenance and care 295

Obser
vethe additional following points during
st arting assistance:
R Starting assis tance may only be pr ovided
using vehicles, batteries or other jump start
devices with a nominal voltage of 12V.
R The vehicles must not touch.
R Vehicles with a petrol engine: jump-start
th eve hicle only when the engine and exhaust
sy stem are cold. St
arting assi stance and charging the12 V
battery Requ
irements:
R The vehicle is secured with the electric park‐
ing brake.
R Vehicles with automatic transmission: the
transmission is in position j.
R The ignition and all electrical consumers are
switched off.
R The bonnet is open. Example: engine compartment
#
Slide co ver1 of positive clamp 2onthe
jump-s tarting connection point in the direc‐
tion of the ar row. #
Connect positive clamp 2onyour vehicle to
th e positive pole of the donor battery using
th e jump lead/charging cable. Alw ays begin with positive clamp
2onyour ow nve hicle
fi rs t. #
During starting assi stance: start the
engine of the donor vehicle and run at idle
speed. #
Connect the negative pole of the donor bat‐
te ry and ear thpoint 3ofyour ow nve hicle
by using the jump lead/charging cable. Begin
with the donor battery firs t. #
During starting assi stance: start the
engine of your ow nve hicle. #
During thech arging process: start the
ch arging process. #
During starting assi stance: letthe engines
ru nfo r se veral minutes. #
During starting assi stance: before discon‐
necting the jump lead, switch on an electrical
consumer in your ow nve hicle, e.g. there ar
wind owheater or lighting.
When thest arting assis tance/charging process
is compl ete, per form thefo llowing steps: 318
Breakdown assis tance

Display messages
Possible causes/consequences and M
MSolutions #
Consult a qualified specialist workshop. Active bonnet malfunction
See Owner's Manual
*T
he active bonnet (pedestrian pr otection) is malfunctioning or inoperative af ter having already been triggered. #
Consult a qualified specialist workshop.
C *A
t least one door is open. #
Close all doors.
M *T
he bonnet is open. &
WARNING Risk of accident due todriving with the bonn etunlo cked
The bonn etmay open and block your vie w. #
Neverre lease the bonn etwhen driving. #
Before every trip, ensure that the engine bonn etis loc ked. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions. #
Close the bonn et.
N *T
he boot lid is open. Display messages and
warning/indicator lamps 373

Fu
nction .............................................. 209
Sy stem limitations ...............................2 09
Blo wer
see Climate control
BlueTEC see AdBlue ®
Bonn et
Re setting (active bonnet) .................... 293
Boot lid Closing .................................................. 79
HANDS-FREE ACCESS .......................... .81
Locking separa tely ................................ 83
Opening ................................................ .78
Opening dimensions ............................3 56
Brake Assist Sy stem
see BAS (Brake Assi stSystem)
Brake fluid Notes ................................................... 354
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion) ..................................................... 183
Brakes ABS (Anti-lock Braking Sy stem) ........... 181Ac
tive Brake Assi st.............................. 200
Ad aptive brake lights .......................... .185
BA S (Brake Assi stSystem) ...................1 81
Driving tips .......................................... 15 3
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 183
HOLD function .................................... .184
Limited braking ef fect (salt-trea ted
ro ads) .................................................. 15 3
New/replaced brakepads/brake
discs .................................................... 151
Ru nning-in no tes ..................................1 51
Braking assistance see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions .............. 16
To w- starting ........................................ 324
To wing away ........................................ 320
Tr ansporting theve hicle ......................3 22
Wheel change ...................................... 337
Breakdown see Flat tyre
Buttons Steering wheel .....................................2 45 C
Calls Mercedes me ....................................... 273
Camera see 360° Camera
see Reversing camera
Car key
see Key
Car wash
see Care
Car wash (care) ....................................... 299
Car-to-X-Communication Displaying hazard warnings ................ .267
Care .......................................................... 304
360° camera ...................................... .302
Air-water duct ...................................... 299
Car wash ............................................. 299
Carpet .................................................3 04
Decorative foil .................................... .301
Displ ay................................................ 304
Exterior lighting ................................... 302
High-pressure cleaner ......................... 300
Matt finish ........................................... 301 Index
433

Ø
XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss. ............................................ .409
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual .........391
Ac tive Blind Spot Assi stinope rative .... 391
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual ................................................ 391
Ac tive bonnet malfunction See Own‐
er's Manual .......................................... 373
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ...... 399
Ac tive Brake Assi stFunctions limited
See Owner's Manual ........................... 400
Ac tive Dis tance Assi stavailable
again .................................................. .387
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual .........387
Ac tive Dis tance Assi stinope rative ....... 387 Ac
tive Lane Keeping Assist cur rently
una vailable See Owner's Manual .........391
Ac tive Lane Keeping Assist inopera‐
tive ...................................................... 392
Ac tive Parking Assist and
PA RKTRONIC inoperati veSee Own‐
er's Manual ......................................... 396
Ac tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops ......................................... 388
Ac tive Steering Assist cur rently
una vailable See Owner's Manual .........388
Ac tive Steering Assist inoperative .......388
Ac tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual .........389
Ac tive Stop-and-Go Assist inopera‐
tive See Owner's Manual ..................... 389
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual .........368 Ad
aptive Highbeam Assist inopera‐
tive ...................................................... 368
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual ...................................................... .368
Ad aptive Highbeam Assist Plus inop‐
erative ................................................ .368
Apply brake todeselect Park (P)
position ...............................................3 77
App lybrake toselect D or R ................378
App lybrake toselect R ........................ 378
Au xilia rybattery malfunction ...............379
Beginning emer gency stop .................. 389
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 390
Blind Spot Assist inope rative ............... 390
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...3 90
Cannot start engine See Owner's
Manual ................................................ 403 Index
439

Engine number .................................... 345
St arting (eme rgency operation
mode) .................................................. 14 9
St arting (Remo teOnline) ..................... 15 0
St arting (s tart/s top button) .................1 49
St arting assis tance .............................. 318
Switching off (s tart/s top button) .........1 72
Engine bonnet Function (active bonnet) ...................... 293
Opening/closing ................................. 294
Engine data Displaying ............................................ 161
Engine electronics Notes .................................................. 343
Engine number ........................................3 45
Engine oil ................................................. 296
Ad ditives .............................................3 53
Capacity .............................................. 353
Che cking the oil le vel using the on-
board computer ................................... 296
MB-Fr eigabe or MB-Appr oval .............. .353
Quality ................................................. 353
To pping up ...........................................2 96EQ Boost
Operating saf ety .................................... 22
ERA-G LONA SS test mode
St arting/ending .................................. 283
Er ro r message
see Displ aymessa ge
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Crosswind Assist ................................. 182
Tr ailer stabilisation .............................. 182
ESP ®
(Electronic Stability Prog ram) ....... 181
Ac tivating/deactivating ...................... .183
Fu nction/no tes .................................... 181
EU general operating permit number ....345
Exterior lighting see Lights
Exterior lighting (care) ............................ 302 F
Fa tigue de tection
see ATTENTION ASSIST Fi
re extinguisher ..................................... 307
Firs t-aid kit (soft sided) .......................... 307
Flacon Inse rting/ removing .............................. 141
Flat towing
see Tow- bar sy stem
Flat tyre ....................................................3 08
MOExtended tyres ............................... 309
No tes .................................................. 308
TIREFIT kit ............................................ 310
Wheel change ...................................... 337
Floor mats ................................................ 11 8
Fo g light (extended range) ......................1 24
Fo il co vering
Ra dar and ultrasonic sensors .............. 17 9
Fr ag rance
see Frag rance sy stem
Fr ag rance sy stem .................................... 141
Inserting/removing theflacon ............ .141
Setting ................................................. 14 0
Fr ee software ............................................ 35 Index
443