Fig. 118 To the right of the steering wheel: positions of the vehicle key in the ignition lock.
First read and observe the introductoryinformation and safety warnings⇒
Introduction
When there is no vehicle key in the ignition lock, the steering column lock can be activated.
Vehicle key positions ⇒ Fig. 118
Ignition switched off. The vehicle key can be removed.
Ignition switched on. The steering lock can be released. The diesel engine is pre-heated
and the yellow indicator lamp lights up yellow.
Depress the brake pedal when the indicator lamp lights up green. Start the engine.
Release the vehicle key as soon as the engine starts. Once released, the vehicle key moves
back to position ⇒ Fig. 118①.
m/k/a995MKDepending on the market, in vehicles with a DSG dual clutch gearbox: If
you cannot remove the vehicle key from the ignition lock when the vehicle is stationary, move the
selector lever to position P. If necessary, press the lock button in the selector lever and then
release it.
Starter button
First read and observe the introductoryinformation and safety warnings⇒
Introduction
The starter button replaces the ignition
lock (Press & Drive).
Fig. 119 In the lower section of the centre console: starter button for starting the engine.
The starter button is used to start the vehicle (Press & Drive).
The vehicle can be activated only if there is a valid vehicle key in the vehicle.
When leaving the vehicle, the electronic steering column lock will be activated when the ignition is
switched off and the driver door is opened ⇒ Steering.
Switching the ignition on and off
Press the starter button once without depressing the brake or clutch pedals ⇒.
Careless or unsupervised use of the vehicle key can lead to accidents or injuries.
•Always take all vehicle keys with you every time you leave the vehicle. The engine can
be started and electrical equipment such as the window controls can be operated. This
can cause serious injury.
•Never leave children or people requiring assistance alone in the vehicle when the
vehicle is locked. They could become trapped in the vehicle in an emergency and may
not be able to get themselves to safety. For example, locked vehicles may be subjected
to very high or very low temperatures depending on the season. This can cause
serious injuries and illness or fatalities, especially among small children.
•Never remove the vehicle key from the ignition lock when the vehicle is in motion. The
steering column lock may be activated and you will no longer be able to steer the
vehicle.
•The key bit in the vehicle key needs to be folded out fully and locked in position.
•Only attach light objects weighing under 100 g to the vehicle key.
WARNING
The 12-volt vehicle battery may run down and prevent the motor from restarting if the
ignition is switched on while the engine is switched off.
•Always switch off the ignition before leaving the vehicle.
NOTICE
Automatic ignition switch-off
The ignition switches off automatically after a short time if the driver moves away from the vehicle
with the vehicle key when the ignition is switched on. If the dipped beam headlights were switched
on at the time, the side lights will remain switched on for approximately 30 minutes. The side lights
can be switched off manually ⇒ Lights or by locking the vehicle ⇒ Central and manual locking.
Once the vehicle detects that the driver is absent when the engine stop is active, the ignition will
switched off automatically after a certain period of time.
Automatic ignition switch-off in vehicles with a start/stop system
When all the following conditions are fulfilled at the same time, the vehicle ignition will be switched
off automatically when engine stop is active and when the vehicle is stationary:
•The driver removes their seat belt.
•No pedals are depressed.
•The driver door is opened.
If the ignition is deactivated automatically while the dipped beam headlights are switched on ,
the side lights remain switched on for around 30 minutes.
The side lights can be switched off manually or will go off when the vehicle is locked.
Engine restart function
If no valid vehicle key is detected in the vehicle interior once the engine has been switched off, the
engine can be restarted within approximately 5 seconds. A corresponding message appears on the
instrument cluster display.
After this time, the engine cannot be re-started without a valid vehicle key in the vehicle interior.
Before leaving the vehicle, always switch off the ignition manually and observe any
information shown in the instrument cluster display.
Leaving the vehicle stationary for long periods with the ignition switched on can discharge
the 12-volt vehicle battery so that the engine can no longer be started.
The engine cannot, for example, be started with the starter button if the button cell in the
vehicle key is weak or flat. In this case, use the emergency start function ⇒ Emergency start
function.
Starting the engine
First read and observe the introductoryinformation and safety warnings⇒
Introduction
•m/k/a995MKVehicles with ignition lock: Turn the vehicle key to position ⇒ Fig. 118①.
The ignition is switched on.
•m/k/a995MKVehicles with a starter button: Press the starter button once. The ignition is
switched on.
•m/k/a995MK Vehicles with a diesel engine: During the diesel engine preheating phase,
the indicator lamp in the instrument cluster lights up.
•Depress and hold the brake pedal until the electronic parking brake has been switched off.
•m/k/a995MKVehicles with manual gearbox: fully depress the clutch pedal and hold it
until the engine has been started. Move the gear lever to neutral position.
•m/k/a995MKVehicles with DSG dual clutch gearbox: move the selector lever to
position P or N.
Unintentional vehicle movements can cause serious injury.
•Do not depress the brake or clutch pedal when switching on the ignition as the engine
will then start immediately.
WARNING
Careless or unsupervised use of the vehicle key can lead to accidents or injuries.
•Always take all vehicle keys with you every time you leave the vehicle. Children or third
parties could lock the vehicle, start the engine, switch on the ignition or operate
electrical equipment such as the electric windows.
WARNING
Conditions that require a manual engine start
The engine must be started manually under the following conditions:
•If the driver door is opened.
•If the bonnet is opened.
Activating and deactivating the start/stop system manually
•Press the button in the centre console ⇒ Fig. 121 to deactivate the system. If the
start/stop system has been deactivated, the indicator lamp in the button lights up.
•Press the button in the centre console again ⇒ Fig. 121 to reactivate the system.
The instrument cluster shows the status of the start/stop system every time the button is
pressed.
If the start/stop system has switched the engine off, it will start again as soon as the system has
been deactivated manually with the button.
Always deactivate the start/stop system manually when driving through water.
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 via an active braking intervention ⇒ Adaptive Cruise Control (ACC).
m/k/a995MKVehicles with DSG dual clutch gearbox: when the Adaptive Cruise Control
(ACC) is active, the DSG dual clutch gearbox can shift into coasting mode and the engine can be
switched off with the engine-off coasting function.
In the following instances, the engine will restart when the Adaptive Cruise Control (ACC) is active:
•If the accelerator is depressed.
•When the Adaptive Cruise Control (ACC) has resumed speed and automatic distance control.
•If the vehicle ahead has moved on.
•If the Adaptive Cruise Control (ACC) is deactivated and the vehicle driving in front moved away.
Troubleshooting
The engine stop function may be deactivated if the temperature is above around 38°C (100°F).
In some cases, it may be necessary to restart the engine manually. Follow any
corresponding messages on the instrument cluster display.
The start/stop function is activated automatically if the Eco driving profile is selected on
vehicles with driving profile selection ⇒ Driving profile selection and 4MOTION Active Control.
Always deactivate the start/stop system manually when driving through water.
Manual gearbox: selecting a gear
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Never switch off the engine or the ignition while the vehicle is in motion. This can lead to a
loss of vehicle control, accidents and serious injuries.
•The airbags and belt tensioners will not work if the ignition is switched off.
•The brake servo will not work when the engine is switched off. That is why more
pressure on the brake pedal is needed to brake the vehicle when the engine is
switched off.
•The power steering will not work when the engine is not running. More power is
needed to steer the vehicle when the engine is switched off.
•When the ignition is switched off, the steering lock may activate and you will no longer
be able to steer the vehicle.
•The start/stop system must be deactivated if work is to be carried out in the engine
compartment.
WARNING
If the start/stop system is used in very high outside temperatures over a long period, the
12-volt vehicle battery can be damaged.
NOTICE
•After manual release, carefully press the cover onto the centre console while ensuring that the
electrical wires are positioned correctly.
Emergency programme
There is a fault in the system if all the displays on the instrument cluster for the selector lever
positions have a light background. The DSG dual clutch gearbox is running in an emergency
programme. The vehicle can still be driven in the emergency programme, but only at reduced
speed and not in all gears.
In vehicles with a DSG dual clutch gearbox, you may no longer be able to select reverse gear.
In all cases you should have the DSG dual clutch gearbox checked by a qualified workshop
immediately.
Overheating of the DSG dual clutch gearbox
The DSG dual clutch gearbox can become too hot, for example, if the vehicle pulls off
frequently, drives at crawling speed for long periods, or in stop-and-go traffic. Overheating is
indicated by the warning lamp and in some cases by a text message in the instrument cluster
display. A signal tone may also be given. Stop the vehicle and allow the gearbox to cool down ⇒
.
The vehicle does not move forwards or backwards even though a position
has been selected
If the vehicle will not move in the required direction, the system may have selected the position
incorrectly. Depress the brake pedal and reselect the position.
If the vehicle still does not move in the required direction, there is a system fault. Seek expert
assistance and have the system checked.
Downhill speed control
If the vehicle is being held on the Auto Hold function, the green indicator lamp lights up.
Switch off Auto Hold if necessary ⇒ Auto Hold function.
The Hill Descent Control system in vehicles with a DSG dual clutch gearbox helps when braking
and travelling downhill ⇒. This system uses the braking power of the engine, rather than the
brakes directly.
The DSG dual clutch gearbox selects the best gear for the circumstances, depending on the
steepness of the hill and the current speed. The selector lever must be in position D/S. The downhill
speed control is not active in Tiptronic mode.
As the downhill speed control system can shift down only as far as third gear, it may be necessary
to activate the Tiptronic mode when driving down particularly steep inclines. When in Tiptronic
mode, select second or first gear manually in order to make use of the braking effect of the engine
and to relieve the load on the brakes.
The start/stop system is automatically deactivated as long as downhill speed control is active.
Activating downhill speed control automatically:
•If the downhill gradient is greater than approximately 6%.
•AND: if the selector lever is in position D/S.
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Never move the selector lever out of the position P if the electronic parking brake is not
switched on. Otherwise the vehicle could move unexpectedly if it is stopped on an incline,
which could lead to accidents and serious injuries.
WARNING
The DSG dual clutch gearbox will become damaged if the vehicle is allowed to roll for a
long period of time or at a high speed (for example while being towed) with the selector
lever in position N and the engine switched off.
NOTICE
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•If the display indicates that the gearbox is overheating for the first time, the vehicle will
have to be parked safely or driven faster than 20 km/h (12 mph).
•If the text message and signal tone are repeated every ten seconds, the vehicle must be
parked safely immediately and the engine switched off. Allow the gearbox to cool down.
•In order to prevent damage to the gearbox, you should not drive on until the acoustic
warning stops. You should not pull away or drive the vehicle at very low speeds while
the gearbox is overheated.
NOTICE
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•In addition, if the cruise control system or Adaptive Cruise Control (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 cruise control system or Adaptive Cruise Control (ACC) is active: if the
stored speed is exceeded.
Deactivating downhill speed control automatically:
•If the downhill gradient becomes less steep.
•OR: if the gearbox shifts up a gear because the engine speed is higher than approximately
4,500 rpm.
•Or in addition if the cruise control system or Adaptive Cruise Control (ACC) is active: if
the stored speed can be maintained.
Hill Descent Control
When Hill Descent Control is active, the indicator lamp lights up white.
When Hill Descent Control is not active, the indicator lamp lights up grey. The system is
switched on, but is not regulating.
The Hill Descent Control system automatically brakes all four wheels to limit the speed when driving
forwards and reversing on steep downhill gradients. The wheels will not lock as the anti-lock brake
system remains active. In vehicles with a manual gearbox, Hill Descent Control adjusts the target
speed so that the engine speed does not drop below the idling speed.
If you enter a downhill slope travelling at a speed under 30 km/h (18 mph), the vehicle speed will be
limited to a speed between min. 2 km/h (1 mph) and max. 30 km/h (18 mph). The driver can use the
accelerator pedal and the brakes to alter the speed in this range. The control speed will be set
again as soon as the driver takes their foot off the accelerator or brake pedal.
However, this can work only if the tyres have sufficient grip on the road. Hill Descent Control
cannot work on an icy or slippery slope, for example.
Hill Descent Control is automatically activated if the following conditions are met:
•The engine is running.
•The Off-road driving profile is selected ⇒ Driving profile selection and 4MOTION Active
Control.
•The speed is under 30 km/h (18 mph) (the function display is visible on the instrument
cluster display).
•The downhill gradient is at least 10 %.
•You do not brake or accelerate.
The Hill Descent Control function will be deactivated when the downhill gradient is less than 5 %.
The intelligent downhill speed control technology cannot overcome the laws of physics,
and functions only within the limits of the system. Never allow the extra convenience
afforded by pull-away assist systems to tempt you into taking any risks when driving.
•Unintentional vehicle movements can cause serious injury.
•The downhill speed control cannot replace the full concentration of the driver.
•Always adapt your speed and driving style to suit visibility, weather, road and traffic
conditions.
•Downhill speed control cannot hold the vehicle in all hill start situations or brake it
sufficiently on all slopes going downhill (e.g. if the ground is slippery or icy).
WARNING
Always be prepared to brake the vehicle. Accidents and injuries could occur if this is not
ensured.
•The downhill speed control is only a support function and may not be able to brake the
vehicle sufficiently in all situations when driving downhill.
•The vehicle may become faster despite the downhill speed control being in operation.
WARNING
•Proactive occupant protection system
In vehicles with a DSG dual clutch gearbox, the system automatically changes to gear
position S when the Sport driving profile is selected. The system automatically switches to gear
position D when the Eco driving profile is selected. Since coasting is active in the Eco driving
profile, the gearbox programme E is additionally displayed on the instrument cluster display.
The driver can adjust certain vehicle functions irrespective of the selected driving profile. For
example, the driver can switch to gear position S when the Eco driving profile is selected.
Selecting a driving profile (4MOTION Action Control)
Fig. 129 In the lower section of the centre console: control for the 4MOTION Active Control in
vehicles with all-wheel drive.
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Key to ⇒ Fig. 129:
MODE button: Selects Onroad driving profiles and opens menu in the Infotainment system.
Snow driving profile.
On-road driving profile.
Off-road driving profile.
Off-road Individual driving profile.
Selecting the driving profile
•Switch on the ignition.
•Turn the control for the 4MOTION Active Control until the LED next to the desired driving profile
lights up ⇒ Fig. 129.
•To switch through the Onroad driving profiles, press the MODE button or press an Onroad
driving profile in the Infotainment system.
•Touch the function button to display additional information about the active driving mode.
•Touch the function button for the required driving profile in the Infotainment system.
When the ignition is switched off, the set driving profile and the individual settings will remain
selected.
If one of the driving profiles Snow, Off-road or Off-road Individual was the last active profile, the
most recently active On-road driving profile is activated if the ignition remains switched off for a
relatively long period.
The driving profile Sport will also remain selected after the ignition has been switched off. However,
sport functions, e.g., for the engine and gearbox, can be deactivated when switching on the ignition
again. To reactivate the sports functions, tip the gearbox selector lever to the rear ⇒ DSG dual
clutch gearbox.
Recommended driving situations for each driving profile
•Snow: The Snow driving profile improves the efficiency of the accelerator on icy or snowy
roads. In addition, the lane holding when cornering and the power in straight driving are also
improved. The dynamic of the ACC Adaptive Cruise Control is restricted. The dynamic
cornering light is adjusted to provide better support in poor visibility. It is not possible to shift into
the S position in the Snow driving profile.
•Off-road: The Off-road driving profile improves the efficiency of the accelerator when driving
off-road. The engine brake is always available and gearshifts can be prevented in critical
situations. In the Off-road driving profile, the Hill Start Assist and Hill Descent Control are
active. The dynamic cornering light is adjusted to provide better support in poor visibility. It is
not possible to shift into the S position in the Off-road driving profile. When the driving profile is
active, the instrument cluster displays the symbol m/k/s562MK.
Changing the driving profile can alter the vehicle handling. Never allow the driving profile
selection to tempt you into taking any risks when driving.
•Always adapt your speed and driving style to suit visibility, weather, road and traffic
conditions.
WARNING
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•Off-road Individual: Enhanced version of the off-road driving profile that can be adjusted to the
driver's needs ⇒ Adjusting the driving profile to suit your requirements. When the driving profile
is active, the instrument cluster displays the symbol m/k/s562MK.
•Onroad:The Onroad driving profile enables you to choose between Eco, Comfort, Normal,
Sport and Individual.
Adjusting the driving profile to suit your requirements
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Selecting the Individual driving profile
•Switch on the ignition.
•Switch on the Infotainment system.
•Press the driving profile selection button or turn the control for 4MOTION Active Control
until the LED next to the Onroad driving profile ⇒ Fig. 129③ lights up.
•Touch the Change function button to open the Individual menu.
Selecting the Off-road Individual driving profile
•Switch on the ignition.
•Switch on the Infotainment system.
•If necessary, turn the control ⇒ Fig. 129 for the 4MOTION Active Control until the LED next to
the Off-road Individual driving profile ⇒ Fig. 129⑤ lights up.
•If the Off-road Individual driving profile is already selected, press the MODE button on the
control ⇒ Fig. 129.
•Touch the Change function button to open the Individual menu.
Troubleshooting
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Fault in adaptive chassis control (DCC): go to a qualified workshop and have the system checked.
If there is a fault in the adaptive chassis control (DCC), the message Fault: damping control may
be shown on the instrument cluster display.
Off-road display
The off-road display contains digital
instruments that show additional
information about the vehicle and its
surroundings. This makes it possible to
assess the current driving situation
more precisely.
Fig. 130 In the Infotainment system: off-road display.
Opening the off-road display
Changing the driving profile can alter the vehicle handling. Never allow the driving profile
selection to tempt you into taking any risks when driving.
•Always adapt your speed and driving style to suit visibility, weather, road and traffic
conditions.
WARNING
Accidents and injuries can occur if the driver is distracted. Operating the Infotainment
system can distract you from the road.
WARNING
Fig. 135 On the left of the steering column: cruise control system lever.
Fig. 136 On the instrument cluster display: cruise control system status displays (illustration).
First read and observe the introductoryinformation and safety warnings⇒
Introduction
Key to ⇒ Fig. 136:
Cruise control system not regulating, stored speed shown small or darkened.
System fault. Go to a qualified workshop.
Cruise control system not regulating, no speed stored.
Cruise control system regulating, stored speed displayed in large figures.
Switching on
•Move the lever ⇒ Fig. 135① to position .
No speed has been stored and the speed is not yet controlled.
Starting control
•Press the button ⇒ Fig. 135③ while driving.
The current speed is stored and controlled. The green indicator lamp also lights up.
Setting the speed
•+ 1 km/h (1 mph): tip the lever ⇒ Fig. 135① to position .
•+ 10 km/h (5 mph): push the lever briefly towards ⇒ Fig. 135⊕.
•- 1 km/h (1 mph): press the button ⇒ Fig. 135③.
•- 10 km/h (5 mph): push the lever briefly towards ⇒ Fig. 135㊀.
To keep changing the speed on a continuous basis, press and hold the lever towards
⇒ Fig. 135⊕ or ⇒ Fig. 135㊀. The vehicle adapts the current speed by
accelerating or closing the throttle. The vehicle does not actively brake.
Interrupting control
•Press the lever ⇒ Fig. 135① to position or depress the brake.
The speed remains stored in the memory.
Resuming control
•Move the lever ⇒ Fig. 135① to position .
The stored speed is resumed and controlled.
Switching off
•Move the lever ⇒ Fig. 135① to position .
The cruise control system is switched off and the stored speed is deleted.
Operating the cruise control system via the multifunction steering
wheel