92Instruments and controlsIlluminates when the engine is
running
Stop, switch off engine. Vehiclebattery is not charging. Engine
cooling may be interrupted. The
brake servo unit may cease to be
effective. Seek the assistance of a
workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is
running
Fault in the emission control system.
The permitted emission limits may be
exceeded. Seek the assistance of a
workshop immediately.Flashes when the engine is
running
Fault that could lead to catalytic converter damage. Ease up on the
accelerator until the flashing stops.
Seek the assistance of a workshop
immediately.
Brake and clutch system
R illuminates red.
The brake and clutch fluid level is too low 3 190.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates after the ignition is
switched on if the manual parking
brake is applied 3 150.
Operate pedal - illuminates or flashes yellow.
Illuminates
Brake pedal must be depressed to release the electric parking brake
3 150.
Clutch pedal must be depressed to
start the engine in Autostop mode.
Stop-start system 3 140.
Flashes
Clutch pedal must be depressed to
start the engine with the key 3 18,
3 139.
On some versions, the message to
operate the clutch pedal is indicated
in the Driver Information Centre
3 103.
Electric parking brake m illuminates or flashes red.
Illuminates
Electric parking brake is applied
3 150.
104Instruments and controls● If a warning message appears inthe Driver Information Centre.
● If the parking assist detects an object.
● If unintended lane change occurs.
● If the exhaust filter has reached the maximum filling level.
When the vehicle is parked and/or the driver's door is opened
● With exterior lights on.
During an Autostop ● If the driver's door is opened.
Battery voltage When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.1. Switch off immediately any electrical consumers which are
not required for a safe ride, e.g.
seat heating, heated rear window or other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.
The warning message will disappear
after the engine has been started
twice consecutively without a voltage
drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.Vehicle personalisation
The vehicle's behaviour can be
personalised by changing the settings
in the Info-Display.
Some of the personal settings for
different drivers can be memorised individually for each vehicle key.
Memorised settings 3 23.
Depending on vehicle equipment and
country-specific regulations, some of
the functions described below may
not be available.
Some functions are only displayed or
active when the engine is running.
Personal settings in the
Graphic-Info-Display
CD 400plus/CD 400/CD 300
114LightingLightingExterior lighting.......................... 114
Light switch .............................. 114
Automatic light control .............115
High beam ............................... 116
High beam assist .....................116
Headlight flash ......................... 117
Headlight range adjustment ....117
Headlights when driving abroad .................................... 117
Daytime running lights .............118
Adaptive forward lighting .........118
Hazard warning flashers ..........121
Turn lights ................................ 122
Front fog lights ......................... 122
Rear fog light ........................... 122
Parking lights ........................... 123
Reversing lights .......................123
Misted light covers ...................123
Interior lighting ........................... 123
Instrument panel illumination control ..................................... 123
Interior lights ............................ 124
Reading lights .......................... 124
Sunvisor lights ......................... 124Lighting features ........................125
Entry lighting ............................ 125
Exit lighting .............................. 125
Battery discharge protection ....126Exterior lighting
Light switch
Turn light switch:
7:lights off8:sidelights9:headlights
Control indicator 8 3 95.
126LightingExit lighting is switched off
immediately if the turn signal lever is
pulled while the driver's door is open.
Activation, deactivation and duration of this function can be changed in the Info-Display. Vehicle personalisation
3 104.
The settings can be saved for the key
being used 3 23.
Battery discharge protection Vehicle battery state of charge
function
The function guarantees longest
vehicle battery life via a generator
with controllable power output and
optimised power distribution.
To prevent discharge of the vehicle
battery when driving, the following
systems are reduced automatically in two stages and finally switched off:
● auxiliary heater
● heated rear window and mirrors
● heated seats
● fanIn the second stage, a message
which confirms activation of the
vehicle battery discharge protection will be displayed in the Driver
Information Centre.
Switching off electric lights To prevent discharge of the vehicle
battery when the ignition is switched
off, some interior lights are switched
off automatically after some time.
Driving and operating137Driving and
operatingDriving hints ............................... 137
Control of the vehicle ...............137
Steering ................................... 138
Ground clearance ....................138
Starting and operating ...............138
New vehicle running-in ............138
Ignition switch positions ...........139
Retained power off ..................139
Starting the engine ..................139
Overrun cut-off ........................ 140
Stop-start system ....................140
Parking .................................... 142
Engine exhaust .......................... 143
Exhaust filter ............................ 143
Catalytic converter ...................144
Automatic transmission ..............145
Transmission display ...............145
Selector lever .......................... 146
Manual mode ........................... 147
Electronic driving programmes 147
Fault ........................................ 147
Interruption of power supply ....147
Manual transmission ..................148Brakes........................................ 149
Antilock brake system .............149
Parking brake .......................... 150
Brake assist ............................. 151
Hill start assist ......................... 152
Ride control systems .................152
Traction Control system ..........152
Electronic Stability Control ......153
Interactive driving system ........154
Driver assistance systems .........156
Cruise control .......................... 156
Speed limiter ........................... 157
Forward collision alert .............159
Following distance indication ...161
Parking assist .......................... 162
Side blind spot alert .................169
Rear view camera ...................170
Traffic sign assistant ................172
Lane departure warning ..........176
Fuel ............................................ 177
Fuel for petrol engines .............177
Refuelling ................................ 178
Trailer hitch ................................ 180
General information .................180
Driving characteristics and towing tips .............................. 180
Trailer towing ........................... 180
Towing equipment ...................181Driving hints
Control of the vehicle
Never coast with engine not
running (except during Autostop)
Many systems will not function in this
situation (e.g. brake servo unit, power
steering). Driving in this manner is a
danger to yourself and others. All
systems function during an Autostop,
but there will be a controlled reduction
in power steering assist and vehicle
speed is reduced.
Stop-start system 3 140.
Idle boost
If charging of the battery is required
due to battery condition, the power
output of the generator has to be
increased. This will be achieved by an idle boost which may be audible. A
message is displayed in the Driver
Information Centre.
138Driving and operatingPedals
To ensure the pedal travel is
uninhibited, there must be no mats in
the area of the pedals.
Use only floor mats, which fit properly and are fixed by the retainers on the
driver's side.
Steering If power steering assist is lost
because the engine stops or due to a
system malfunction, the vehicle can
be steered but may require increased
effort.
Control indicator c 3 93.Caution
Vehicles equipped with hydraulic
power steering:
If the steering wheel is turned until it reaches the end of its travel, and
is held in that position for more
than 15 seconds, damage may
occur to the power steering
system and there may be loss of
power steering assist.
Ground clearance
Due to the reduced ground clearance,
the vehicle can be damaged
depending on the vehicle loading and
appearance of the ground. Take
special care and drive slowly on steep driveways, entry and exit of parking
garages, high kerbs and uneven
surfaces. If possible, drive diagonally
with one wheel after another when running over kerbs or uneven
surfaces.Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system. Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period fuel and engine oil consumption may be
higher and the cleaning process of the exhaust filter may take place more
often. Autostop may be inhibited to
allow for charging the vehicle battery.
Exhaust filter 3 143.
Driving and operating139Ignition switch positions0:ignition off1:steering wheel lock released,
ignition off2:ignition on3:starting
Retained power off
The following electronic systems can
work until the driver's door is opened
or for a maximum of 10 minutes after
the ignition is switched off:
● power windows
● power outlets
Starting the engine
Manual transmission: operate clutch.
Automatic transmission: operate
brake and move the selector lever to
P or N.
Do not operate the accelerator pedal. Turn the key briefly to position 3 and
release: an automatic procedure operates the starter with a short delay
as long as the engine is running, see
'Automatic Starter Control'.
Before restarting or to switch off the
engine, turn the key back to position
0 .
During an Autostop, the engine can
be started by depressing the clutch
pedal.
Starting the vehicle at low
temperatures
Starting the engine without additional
heaters is possible down to -25 °С for diesel engines and -30 °C for petrol
engines. Required is an engine oil
with the correct viscosity, the correct fuel, performed services and a
sufficiently charged vehicle battery.
With temperatures below -30 °C the
automatic transmission needs a
warming phase of approx. 5 minutes.
The selector lever must be in position
P .
Automatic Starter Control This function controls the engine
starting procedure. The driver does
not have to hold the key in position 3.
Once applied, the system will go on starting automatically until the engine
is running. Because of the checking
procedure, the engine starts running
after a short delay.
140Driving and operatingPossible reasons for a non-starting
engine:
● Clutch pedal not operated (manual transmission).
● Brake pedal not operated or selector lever not in P or N
(automatic transmission).
● Timeout occurred.
Turbo engine warm-up
Upon start-up, engine available
torque may be limited for a short time,
especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully
protect the engine.
Overrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but accelerator pedal is released.
Depending on driving conditions, the
overrun cut-off may be deactivated.Stop-start system
The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam. It starts the engine
automatically as soon as the clutch is depressed. A vehicle battery sensor
ensures that an Autostop is only
performed if the vehicle battery is
sufficiently charged for a restart.
Activation
The stop-start system is available as
soon as the engine is started, the
vehicle starts-off and the conditions
as stated below in this section are
fulfilled.Deactivation
Deactivate the stop-start system
manually by pressing eco. The
deactivation is indicated when the
LED in the button extinguishes.
Autostop If the vehicle is at a low speed or at a
standstill, activate an Autostop as
follows:
● Depress the clutch pedal.
● Move the selector lever to neutral.
● Release the clutch pedal.