OperationFig. 113
Display
Vehicles with manual transmission
The engine is automatically switched off as soon as the vehicle comes to a
halt, the shift lever is moved into neutral and the clutch pedal is released.
The engine is automatically started as soon as the clutch pedal is depressed.
Vehicles with automatic transmission
The engine is automatically switched off as soon as the vehicle comes to a
halt and the brake pedal is operated.
The engine is automatically started as soon as the brake pedal is released.
Requirements for the system to function correctly
The following conditions must be met for the system to function correctly.
The driver's door is closed.
The driver has fastened the seat belt.
The bonnet is closed.
The driving speed was higher than 4 km/h after the last stop.
No trailer is coupled.
System status
The system status is shown in the display when the vehicle comes to a halt
» Fig. 113 .
The engine is switched off automatically; when moving off, the ignition
process will be initiated automatically.
The engine is not switched off automatically.
Reasons for the engine running
It may be essential for the engine to keep running when the vehicle comes to
a halt, 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 interior 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 » Owner´s Manual Infotainment , chapter CAR - Vehicle set-
tings (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
START STOP system.■
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 shut-down
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.
100Driving
Checking the battery electrolyte levelFig. 158
Vehicle battery: Electrolyte level
indicator
Read and observe and on page 151 first.
On vehicles with a vehicle battery fitted with a colour indicator, the electrolyte
level can be determined by looking at the change in colour of this display.
Air bubbles can influence the colour of the indicator. For this reason carefully
knock on the indicator before carrying out the check.
Check
Black colour – electrolyte level is correct.
Colourless or light yellow colour – electrolyte level too low, the battery must
be replaced.
For technical reasons, on vehicles with the description “AGM”, the electrolyte
level cannot be checked.
Vehicles with the START STOPsystem are fitted with a battery control unit for
checking the energy level for recurring engine starts.
We recommend that you have the acid level checked regularly by a specialist
garage, especially in the following cases. ▶ High external temperatures.
▶ Longer day trips.
▶ After each charge.
Winter time
The vehicle battery only has a proportion of the starting power in lower tem-
peratures. A discharged vehicle battery may already 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.
NoteThe battery acid level is also checked regularly by a specialist garage as part of
the inspection service.
Charging
Read and observe
and on page 151 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 on the
device.
›
After charging has been successful: Switch off the charger and remove the
mains cable 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 instructions of the charger manufacturer .
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.
152General Maintenance
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, 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 168, Jump-starting using the battery from
another vehicle .
Replacing
Read and observe
and on page 151 first.
The new vehicle battery must have the same capacity, voltage, current and
size as the original battery. Suitable vehicle battery types can be purchased
from a specialist garage.
We recommend you have the battery replaced by a specialist garage.
Disconnecting and reconnecting
Read and observe
and on page 151 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 / deviceCommissioningTime 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 151 first.
The vehicle's electrical system automatically prevents the battery from dis-
charging when the battery is being heavily used. This manifests itself by the
following. ▶ The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
▶ Where necessary, large convenience consumers such as seat heaters and
rear window heaters have their power limited or are shut off completely in
the event of an emergency.
CAUTION
■ Despite such intervention by the vehicle electric system management, the
vehicle battery may be drained. For example, when the ignition is switched on
a long time with the engine turned off or the side or parking lights are turned
on during longer parking.■
Consumers that are supplied via a 12-V power socket can cause the vehicle
battery to discharge when the ignition is switched off.
153Inspecting and replenishing
The jump-start cable must be connected to the engine earthing point C» Fig. 172 only on vehicles with the START-STOP system.
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.
›
Remove the jump start cables in the reverse order as attachment.
Engines in vehicles with the vehicle battery in the boot
The positive terminal
A
is located under a cover in the engine compartment
» Fig. 173 .
›
Unlock the retainer tab on the cover in direction of arrow
1
.
›
Open the cover in the direction of the arrow
2
.
›
Clamp the positive terminal of the jumper cable to the position
A
» Fig. 173 .
›
Clamp the negative terminal of the jumper cable to the earthing point of the
engine
D
» Fig. 172 or to a metal part firmly connected to the engine block or
directly to the engine block.
›
Remove the jump start cables in the reverse order as attachment.
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. Observe the instructions of the jumper lead 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 of the bat-
tery being ignited by the strong spark resulting from the engine being star-
ted.■
The non-insulated parts of the terminal clamps must never touch each
other – there is a risk of short circuit!
WARNING (Continued)■ The jump-start cable connected to the positive terminal of the battery
must not come into contact with electrically conducting parts of the vehicle
– there is a risk of short circuit!■
Route the jump-start cables so that they cannot be caught by any rotat-
ing parts in the engine compartment.
Towing the vehicle
Introduction
Fig. 174
Braided tow rope / Spiral tow rope
This chapter contains information on the following subjects:
Front towing eye
170
Rear towing eye
171
Vehicles with a tow hitch
171
For towing a braided tow rope is to be used » Fig. 174-
.
When towing, the following guidelines must be observed.
Vehicles with manual transmission may be towed in with a tow bar or a tow
rope or with the front or rear wheels raised.
Vehicles with automatic transmission may be towed in with a tow bar or a tow
rope or with the front wheels raised. If the vehicle is raised at the rear, the au-
tomatic gearbox will be damaged! If possible, the vehicle should be towed with
the engine running or at least with the ignition on.
Driver of the tow vehicle
›
Engage the clutch gently when starting off or depress the accelerator partic-
ularly gently if the vehicle is fitted with an automatic gearbox.
169Emergency equipment and self-help
Towing deviceAccessories126
Description122
Operation and maintenance137
Towing eye Front
170
Rear171
Towing protection54
Towing the vehicle169
Traction control (TCS)110
Trailer126
13-pin socket127
connection and disconnection127
Load128
Loading127
Safety eye127
Towing a trailer128
Trailer operation121
Trailer stabilization system (TSA)111
Transmission Warning messages
36
Transport Luggage compartment
81
Roof rack89
Transporting73
Transporting children safely19
TSA111
Turn signal60
Turn signal system Warning light
35
Tyre Damage
157
Explanation of the label158
see wheels158
Tyre load-bearing capacity Refer to Wheels
158
Tyre pressure155
Warning light34
Tyre pressure monitoring119
Display34
Infotainment display120
Save tyre pressure values120
Save tyre pressure values - button121
Save tyre pressure values - Infotainment120
Tyre repair General notes
166
Preparations167
Pressure test167
Sealing and inflating the tyre167
Tyres154
new106
Tyre pressure155
Wear and tear156
Wear indicators156
Tyre size158
see wheels158
U
Under-body Vehicle care
138
Under-body protection138
Unlock Key
50
Unlocking Individual settings
52
KESSY51
Remote control50
Unlocking and locking49
USB80
Used vehicles Acceptance and recycling
133
Useful equipment Ashtray
75
Car park ticket holder73
Cigarette lighter75
Clothes hook79
Cup holders74
Glasses compartment78
Multimedia holder77
Storage compartment73
Using the selector lever104
V
Variable loading floor
86
Folding up88
Inserting88
Lower position87
Parking position88
Removing88
Upper position87
Vehicle battery Automatic load deactivation
153
charging152
Checking the battery electrolyte level152
Cover151
Operation in winter152
Replacing153
Safety instructions150
Warning light36
Vehicle care Alcantara
139
Anodized parts136
Artificial leather139
Cavity protection137
Chrome parts136
Cleaning vehicle exterior134
Cleaning wheels137
Decorative and protective films135
Door locking cylinder137
Headlight glasses136
Interior care138
Maintenance135
Materials139
Natural leather138
Plastic parts135
Polishing vehicle paint work135
Rubber seals136
Safety belt140
Seat covers140
198Index