The automatic start procedure takes place again. The warning symbol goes
out.
Further information on automatic transmission Engine shut down takes place when the selector lever is in positions P, D , S and N
and in Tiptronic mode.
When the selector lever is in position P, the engine remains shut down even after
you release the brake pedal. Start the engine by pressing the gas pedal or by moving the selector lever into a different mode and releasing the brake pedal.
If the selector lever is moved into position R during the STOP phase , the engine
will re-start.
No automatic engine shutdown takes place when the vehicle is moving at low speed (e.g. during a traffic jam or when tuning) and remains stationary after
pressing the brake pedal lightly. Automatic engine shutdown takes place if you
press the brake pedal down with more force.
Operating conditions of the system
First read and observe the introductory information and safety warn-ings
on page 116.
The START-STOP system is very complex. Some of the procedures are hard to check without servicing.
No engine shut down is carried out
Before each STOP phase, the system checks whether certain conditions have
been met. No engine shut down takes place in the following situations.
› The engine has not reached the minimum temperature for the START STOP
mode.
› The temperature inside the vehicle has not reached the desired temperature
set in the air-conditioning system/heating.
› The external temperature is very low/high.
› The intensive windscreen heater (Climatronic) or windscreen heater/ventilation
is switched on with the maximum air temperature setting (manual air condition-
ing system).
› The parking aid is activated.
› The charge state of the vehicle battery is too low.
› The stationary vehicle is on a steep slope or a steep downhill section.
› The idling speed is too high.
› The steering angle is too large (manoeuvring).
› The selector lever position
R is selected (e.g. when parking).
The warning symbol appears in the instrument cluster display.
The automatic start procedure takes place again
During the STOP phase, the engine fires up without any active driver intervention, e.g. in the following situations.
› The vehicle begins to roll, e.g. on a slope.
› The difference between the temperature setting of the air-conditioning sys-
tem/heating and the temperature of the interior is too large.
› The intensive windscreen heater (Climatronic) or windscreen heater/ventilation
is switched on with the maximum air temperature setting (manual air condition-
ing system).
› The brake pedal was pressed several times (the pressure in the braking system
is too low).
› The charge state of the vehicle battery is too low.
› The current consumption is too high.
Manually activating/deactivating the system
Fig. 103
Button for the START-STOP sys-
tem
First read and observe the introductory information and safety warn-
ings on page 116.
Activation/deactivation
›
Press the symbol button
» Fig. 103 .
When start-stop mode is deactivated, the warning light in the button lights up.
Note
If the system is deactivated during the STOP phase, the automatic start proce-
dure takes place.
117Assist systems
No.Power consumer39Air blower for heating40Not assigned41Heated front seats42Rear window heater43Horn44Windscreen wipers45Boot lid lock, central locking system46Alarm47Cigarette lighter, power socket in the luggage compartment48ABS49Turn signal lights, brake lights50DC-DC converter, radio51Electric windows (driver's window and rear left window)52Electric windows (front passenger's window and rear right)53Windscreen washer54START-STOP instrument cluster, steering wheel module, multi-function
steering wheel55Control unit for automatic gearbox56Headlight cleaning system57Low beam on the left58Low beam on the right
Fuses in the engine compartment
Fig. 167
Vehicle battery: Cover for the
fuse box (variant 1)
Fig. 168
Vehicle battery: Cover for the
fuse box (variant 2)
First read and observe the introductory information and safety warn-
ings on page 197.
Replacing fuses
›
Press the lock buttons on the cover together simultaneously in the direction of
the arrow
1
» Fig. 167 or » Fig. 168 .
›
Remove the cover in the direction of the arrow
2
.
›
Replace the appropriate fuse.
›
Place the cover on top of the fuse box.
›
Push in the interlocks on the cover and lock.
The cover must engage firmly.
199Fuses and light bulbs
