Downloaded from www.Manualslib.com manuals search engine The driver has fastened the seat belt.
The bonnet is closed.
The driving speed exceeded 4 km/h after the last stop.
No trailer is coupled.
Some additional conditions for the system to function cannot be either influ-
enced or recognised by the driver. Therefore, the system can react differently
in situations which are identical from the driver's view.
The information as to whether the conditions are met for the automatic en-
gine shut-off, are shown in the display » Fig. 114.
The motor is automatically switched off.
The engine is not turned off when you stop (the conditions for the auto-
matic motor shut-down are not met).
Reasons for the engine running
Running the engine can be essential, for the following reasons.
› The engine temperature for the proper function of the system has not yet
been reached.
› The charge state of the vehicle battery is too low.
› The current consumption is too high.
› High air-conditioning or heating capacity (high fan speed, big difference be-
tween the desired and actual indoor temperature).
When the engine is shut-down automatically and the system detects that the
engine is required such as when the brake pedal is pressed repeatedly then
the system automatically starts the engine.
Infotainment display
Information about the current status of the system can be displayed in the In-
fotainment display » operating instructions for Infotainment , chapter CAR -
Vehicle settings (CAR button) .
Note
■
If the vehicle remains outdoors for a long time in minus temperatures or in
direct sunlight, it can take several hours until the internal temperature of the
vehicle battery reaches a suitable temperature for proper operation of the sys-
tem.■
If the driver's seat belt is removed for more than approx. 30 seconds or the
driver's door is opened during stop mode, the engine will have to be started
manually.
■ No automatic engine shut-down takes place when a vehicle with automatic
transmission is moving at low speed (e.g. during a traffic jam) and remains sta-
tionary after pressing the brake pedal lightly. Automatic engine shutdown
takes place if you press the brake pedal down with more force.■
For vehicles with automatic transmission there is no automatic engine shut-
down when the system detects a manoeuvring action due to a large steering
angle.
Manually deactivating/activating
Fig. 115
Button for the START-STOP sys-
tem
Deactivate/activate
›
Press the button
» Fig. 115 .
When system is deactivated, the warning light in the button illuminates.
Note
If the system is automatically deactivated when the engine is turned off, then
the automatic start process takes place.
Information messages
The warning symbols are shown in the instrument cluster display. Start the engine manually!
START MANUALLY
If for example the driver's seat belt is stored, the engine must be started man-
ually.
On vehicles with the starter button the ignition is turned off by the first press
of the start button, only after pressing for the second time is the start process
initiated.
Error: start-stop system
START STOP ERROR
105Starting-off and driving
Downloaded from www.Manualslib.com manuals search engine Checking the battery electrolyte levelFig. 163
Vehicle battery: Electrolyte level
indicator
Read and observe and on page 157 first.
On vehicles with a vehicle battery fitted with a colour indicator, » Fig. 163 the
colouring of the display can indicate the acidic level.
Air bubbles can influence the colour of the indicator. For this reason carefully knock on the indicator before carrying out the check.
› Black colour - electrolyte level is correct.
› Colourless or light yellow colour - electrolyte level too low, the battery must
be replaced.
Vehicles with a START-STOP system are fitted with a battery control unit for
checking the energy level for the recurring engine start.
We recommend you have the electrolyte level checked by a specialist garage from time to time, especially in the following cases.
› High external temperatures.
› Longer day trips.
› After each charge.
Winter time
The vehicle battery only has some of its starting power at low temperatures. A
discharged vehicle battery may freeze at temperatures just below 0 °C .
We therefore recommend that you have the battery checked and, if necessary,
recharged by a specialist garage before the start of the winter.
Note
■ The battery electrolyte level is also periodically checked by a specialist ga-
rage as part of the Inspection Service.■
For technical reasons, on vehicles with the description “AGM”, the electrolyte
level cannot be checked.
Charging
Read and observe
and on page 157 first.
A properly charged vehicle battery is essential for reliably starting the engine.A charging operation can be performed if the following conditions are satis-
fied.
The engine is turned off.
The ignition is switched off.
All consumers are turned off.
The bonnet is open.
“Fast charging” with high currents
›
Disconnect both battery cables (first of all “negative”, then “positive”).
›
Attach the terminal clamps of the charger to the battery terminals (red =
“positive”, black = “negative”).
›
Plug the mains cable of the charger into the power socket and switch the
charger on.
›
Once charging is complete: Switch off the charger and remove the mains ca-
ble from the power socket.
›
Only then disconnect the charger's terminal clamps.
›
Reconnect the cables to the battery (first “positive”, then “negative”).
Charging with low voltages
It is not necessary to disconnect the cables from the battery if you recharge
the vehicle battery, for example from a mini-charger.
Refer to the charger manufacturer's instructions .
A charging current of 0.1 multiple of the total vehicle battery capacity (or low-
er) must be used until full charging is achieved.
The vent plugs of the vehicle battery should not be opened for charging.
158General Maintenance
Downloaded from www.Manualslib.com manuals search engine WARNING■When you charge a battery, hydrogen is released, and a highly explosive
gas mixture is also produced. An explosion can be caused through sparkling
over during unclamping or loosening of the cable plug while the ignition is
on.■
Creating a bridge between the poles on the battery (e.g. with metal ob-
jects - cables) creates a short circuit - risk of damage to the battery, explo-
sion and burning of the battery, jets of acid spurting out.
■
Avoid creating sparks when working with cables and electrical devices.
Strong sparking represents a risk of injury.
■
Before carrying out any work on the electrical system, switch off the en-
gine, the ignition and all electrical consumers and disconnect the negative
terminal
.
■
“Quick-charging” the vehicle battery is dangerous and requires a special
charger and specialist knowledge.
■
We therefore recommend that vehicle batteries be “rapidly charged” by a
specialist garage.
CAUTION
On vehicles with the START/STOP system or additional heating (auxiliary heat-
ing), the pole terminal of the charger must not be connected directly to the
negative terminal of the vehicle battery, but only to the engine earth
» page 174 .
Replacing
Read and observe
and on page 157 first.
The new vehicle battery must have the same capacity, voltage, current and thesame size as the original battery. Suitable vehicle battery types can be pur-
chased from a specialist garage.
We recommend that the battery is replaced by a specialist garage, where the
new vehicle battery will be installed properly and the original battery will be
disposed of in accordance with national regulations.
Disconnecting or reconnecting
Read and observe
and on page 157 first.
Disconnecting
›
Switch off the ignition.
›First, disconnect the negative terminal
first, then the positive terminal
of the battery.
Connecting›
First, connect the positive
first, then the negative
battery terminal.
After disconnecting and re-connecting the vehicle battery, the following func-
tions or devices are partially or completely inoperative.
Function / deviceOperating measureElectric windows» page 59RadioEnter code » operating instruc-
tions for the Infotainment dis-
play radioTime settings» page 31
CAUTION
■ Disconnect the vehicle battery only with the ignition turned off - there is a
risk of damaging the electrical system of the vehicle.■
Under no circumstances must the battery cables be connected incorrectly –
risk of a cable fire.
Note
■ After disconnecting and re-connecting the vehicle battery, we recommend
having the vehicle checked by a specialist to ensure that the full functionality
of all electrical systems is guaranteed.■
The data of the multi-function display will be reset.
Automatic load deactivation
Read and observe
and on page 157 first.
The vehicle voltage control unit automatically prevents the battery from dis-
charging when the battery is subjected to heavy loads. This may be noticed
from the following.
› The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
› Where appropriate large convenience consumers, e.g. seat heaters, rear win-
dow heaters, have their power limited or shut off completely if necessary.
159Inspecting and replenishing
Downloaded from www.Manualslib.com manuals search engine Fig. 179
Engine earth: START-STOP sys-
tem
Read and observe on page 174 first.
The starting process using the battery of another vehicle requires the use of
jumper cables.
The jump-start cables must be attached in the following sequence.
›
Attach clamp
1
to the positive terminal of the discharged battery
A
» Fig. 178 .
›
Attach clamp
2
to the positive terminal of the battery supplying power
B
.
›
Attach clamp
3
to the negative terminal of the battery supplying power
B
.
›
Attach the clamp
4
to a solid metal component firmly connected to the en-
gine block or to the engine block itself.
The jump-start cable must only be connected to the engine earthing point on
vehicles with the START-STOP system » Fig. 179.
Starting engine
›
Start the engine on the vehicle providing the power and allow it to idle.
›
Start the engine of the vehicle with the discharged battery.
›
If the engine does not start, halt the attempt to start the engine after 10 sec-
onds and wait for 30 seconds before repeating the process.
›
Detach the jumper cables in the exact reverse order that they were attached.
Both batteries must have a rated voltage of 12 V. The capacity (Ah) of the bat-
tery supplying the power must not be significantly less than the capacity of
the discharged battery in your vehicle.
Jump-start cables
Only use jump-start cables which have an adequately large cross-section and
insulated terminal clamps. Obey the instructions of the jump start cable manu-
facturer.
Positive cable - colour coding in the majority of cases is red.
Negative cable - colour coding in the majority of cases is black.
WARNING■
Do not clamp the jump-start cable to the negative terminal of the dis-
charged battery. There is the risk of detonating gas seeping out the battery
being ignited by the strong spark which results from the engine being star-
ted.■
The non-insulated parts of the terminal clamps must never touch each
other – risk of short circuit.
■
The jump-start cable connected to the positive terminal of the battery
must not come into contact with electrically conducting parts of the vehicle
– risk of short circuit.
■
Route the jump-start cables so that they cannot be caught by any rotat-
ing parts in the engine compartment.
■
There must not be any contact between the two vehicles otherwise cur-
rent may flow as soon as the negative terminals are connected.
Towing the vehicle
Introduction
Fig. 180
Braided tow ropes/spiral tow rope
This chapter contains information on the following subjects:
Front towing eye
176
Rear towing eye
177
Vehicles with a tow hitch
177
A braided tow rope must be used for towing » Fig. 180 -
.
The following guidelines must be observed when towing.
Vehicles with manual transmission may be towed with a tow bar or a tow rope
or with the front or rear wheels raised.
175Emergency equipment, and self-help
Downloaded from www.Manualslib.com manuals search engine T
Tailgate
55
Taking care of your vehicle Automatic car wash system
140
High-pressure cleaner140
Washing by hand140
Wash system140
TCS Operation
115
Warning light33
Technical data192
Tiptronic110
Tools167
TOP TETHER24
Towing175
Towing a trailer134
Towing device Accessories
132
Description128
Operation and maintenance144
Towing eye Front
176
Rear177
Towing protection55
Traction control (TCS)115
Trailer132
13-pin socket 133
connect and disconnect133
Loading133
Safety eye133
Towing a trailer134
Trailer operation127
Transmission Warning messages
36
Transport Luggage compartment
83
Roof rack93
Transporting74
Transporting children safely20
Triangle166
Turn signal61
Turn signal system Warning light
35
Tyre Damage
163
Explanation of the label164
see wheels164
Tyre load-bearing capacity see Wheels
164
Tyre pressure161
Warning light34
Tyre pressure monitor refer to the tyre pressure monitoring
125
Tyre pressure monitoring125
Display34
Infotainment display126
Save tyre pressure values126
Save tyre pressure values - button127
Save tyre pressure values - Infotainment126
Tyre repair General notes
173
Preparations173
Pressure test174
Sealing and inflating the tyre173
Tyres160
new111
Tyre pressure161
Wear and tear162
Wear indicators162
Tyre size164
see wheels164
U
Under-body Vehicle care
144
Under-body protection144
Unlocking Individual settings
52
KESSY51
Key50
Remote control50
Unlocking and locking49
USB82
Used vehicles Acceptance and recycling
139
Useful equipment Ashtray
77
Car park ticket holder75
Cigarette lighter77
Clothes hook81
Cup holders76
Glasses compartment80
Multimedia holder79
Storage compartment74
Useful Features 12-volt power outlet
78
Using the selector lever109
V
Variable loading floor
88
Inserting90
Lower position89
Removing90
Upper position89
Vehicle battery Automatic load deactivation
159
Charging158
Checking the battery electrolyte level158
Cover157
Disconnecting and reconnecting159
Operation in winter158
Replacing159
Safety instructions156
warning light36
Vehicle care Alcantara
145
Anodized parts142
Artificial leather145
Cavity protection143
208Index