Downloaded from www.Manualslib.com manuals search engine ~S~ta~~~st~o~p~s~y~s~te~m~--------------------------------------
BSG-0005
Fig. 146 In the centre consol e: butt on for the
s tart/s top syst em
r-T'n First read and observe the introductory
L-lcJJ information and safety warnings .&. on
page
196.
The start/stop system automatically switches the
engine off when the vehicle is stationary . When re
quired , the engine restarts automatically .
The function is automatically activated every time
the ignit ion is switched on. The instrument cluster
display will show information about the current sta
tus .
You can find additional information on the start/
stop mode by pressing
the~ button in the Vehi
cl e status menu in the infota inment system .
Always deactivate the start/stop system manually
when driving through water.
Vehicles with a manual gearbox
• When the vehicle is stat ionary , d isengage the
g e
ar and release the clutch pedal. The engine is
stopped .
• Depress the clutch pedal to restart the engine .
Vehicles with an automatic gearbox
• When the vehicle is stationary , press and hold
the brake pedal. The engine
is stopped.
• Ta ke your foot off the brake pedal, or depress
the acce lerator, to restart the engine .
Important preconditions for automatic
engine switch-off
• The driv er is wearing their seat belt.
• The driver door is closed .
• The bonnet is closed .
• The factory-fitted towing bracket is not attached
ele ctrically to a trailer .
• A minimum engine temperature has been
rea ched .
198 I While driving
• The ve hicle has been moved since the engine
was las t switc he d off.
• F or v ehicle s with Climatronic: the temperatu
inside the ve hicle is within the pre-set temperat~~e
ra nge .
• The de frost function of the air conditioning sys.
tem is not switched on.
• The charging state of the vehicle battery is suf.
ficient.
• The temperature of the vehicle battery is not
too
low or too high .
• The vehicle is not on a steep incline.
• For vehicles with an automatic gearbox: the
front wheels are not angled too sharply .
• The windscreen heating is not switched on.
• Reverse gear is not engaged .
• The park assist system (Park Assist) system is
not active .
When the condit ions
for automatic engine swit ch
off are only fulfilled when the vehicle is stationary,
the engine can also switch off subsequently :
• When the driver creates the required conditions
by performing an action , e .g . by switching off the
defrost function .
• If the @ button in the centre console is pressed
twice ~Fig. 146.
• When selector lever position P is selected in
vehicles with an automatic gearbox.
Conditions for an automatic restart
The engine can start automatically under the fol
lowing conditions :
• If the temperature inside the vehicle substan
tially increases or decreases .
• If the vehicle rolls on.
• If the voltage of the vehicle battery falls.
• If the steering wheel is moved.
Conditions that require a manual engine
start
The engine must be started manually in the folloW·
ing conditions :
• If the driver unfastens their seat belt.
• If the driver door is opened .
• If the bonnet is opened.
Downloaded from www.Manualslib.com manuals search engine Activating and deactivating the start/stop
system manually
• Press the 0 button in the centre console
~Fig. 146.
• If the start/stop system has been deactivated,
the indicator lam p in the button lights up.
The engine will start if the vehicle is in stop mode
when the system is deactivated manually.
Start/stop
mode when adaptive cruise
control (ACC) is active
The engine will be switched off after the adaptive
cruise control (ACC) has brought the vehicle to a
standstill with an active braking intervention
~page 226.
In the following instances, the engine will restart
when the ACC is active:
• If the accelerator is depressed.
• When the ACC has resumed speed and dis
tance control.
• If the vehicle ahead has moved on.
The brake servo and the electromechanical
steering will not function if the engine is
switched off.
• Never allow the vehicle to roll if the engine
is switched off.
• The start/stop system must be deactivated
if work is to be carried out in the engine com
partment.
Downhill driving assistant
rf'n First read and observe the introductory
~ information and safety warnings £ on
page 196.
The downhill driving assistant in veh icles with an
~utomatic gearbox helps when braking and travel
ling downhill ~ £. The downhill driving assistant
uses the braking power of the engine .
The automatic gearbox selects the best gear for
t~e circums tances by taking the steepness of the
h1l.l and the current speed into consideration. To do
th1s the selector lever must be in position D or S.
The downhill driving assistant is not active in Tip
Ironic mode .
As the downhill driving assistant can only shift
down as far as the 3rd gear, it may be necessary
to activate the Tiptronic mode when driving down
If the start/stop system is used in very high
outside temperatures over a long period, the
vehicle battery can be damaged.
m In some cases, it may be necessa ry to restart
L!J the engine manually. F ollow any correspond
ing messag es on the instrument cluste r display.
m The start/stop system is automatically activa
L!J ted when the Eco driving mode is selected in
vehicles that have Driving Mode Selection
~page 248 .
particularly steep inclines . When in Tiptronic mode,
select the 2nd or 1st gear manually in order to
make use of the braking effect of the engine and to
relieve the brakes .
Activating the downhill driving assistant
automatically:
• If the incline is greater than approximately 6%.
• AND: if the selector lever is in position 0 or s.
• In addition, if the CCS or ACC is switched
off: if the vehicle speed is less than approximately
80 km/h (50 mph) or the brake pedal is depressed.
• In addition if the CCS or ACC is active: if the
stored speed is exceeded .
Driver
assist systems 199
..
