button button Fig. 126
(arrow) goes out.
The electronic parking brake switches on automatically to hold the vehicle securely. However, the
electronic parking brake will not switch on if the brake pedal is depressed when the Auto Hold
function is switched off
Temporarily switching off the Auto Hold function with the button
It can sometimes be necessary to switch off the Auto Hold function temporarily to enable the vehicle
to roll more easily, for example when manoeuvring.
Press the brake pedal when the engine is on.
Press the button. The Auto Hold function is deactivated.
The Auto Hold function will be reactivated as soon as the brake pedal is depressed again when the
vehicle has come to a standstill.
System limits
If the clutch slips during switching off of the ignition or opening of the driver door, the vehicle may
not be secured against rolling away by either the Auto Hold function or the electronic parking brake
lamp in the instrument cluster displaylights upred. The electronic parking brake is switched on.
WARNING
The intelligent Auto Hold function cannot overcome the laws of physics, and operates only within
the limits of the system. Do not let the extra convenience afforded by the Auto Hold function tempt
you into taking any safety risks when driving.
Make sure that the indicator lamp lights up green or red on the instrument cluster display if the
vehicle is to be held securely. The vehicle is being held by the Auto Hold function if the green
indicator lamp is lit and by the electronic parking brake if the red warning lamp is lit.
Never leave the vehicle if the engine is running and the Auto Hold function is switched on.
In some cases, the Auto Hold function cannot sufficiently hold the vehicle on uphill gradients or
brake it sufficiently on downhill gradients, e.g. if the ground is slippery or icy.
NOTICE
Switch off the Auto Hold function before driving into a car wash. Damage may otherwise be caused
by automatic activation of the electronic parking brake.
Safety notes on the parking systems
The parking systems include the following:
Park Distance Control Park Distance Control
-on parts, e.g. bicycle carriers.
Changes have been made to the paintwork in the area of the camera or structural modifications
have been made, e.g. on the running gear.
No camera visibility, error message, system switches itself off
Clean the camera or remove stickers or accessories from the camera Caring for and cleaning the
vehicle exterior
Check whether any damage is visible.
Possible solution
Switch off the system temporarily.
Check whether any of the causes described apply.
You can switch the system back on again once you have rectified the cause of the problem.
If the system still fails to respond as expected, have the system checked by a qualified workshop.
Park Assist
Introduction
This chapter contains information on the followingsubjects:
Prerequisites
Looking for a parking space
Driving into a parking space
Driving out of a parking space
Troubleshooting
Park Assist shows parking spaces which are suitable for parking and assists the driver when driving
into and out of parking spaces.
Park Assist is an extension of Park Distance Control Park Distance Control
Park Assist automatically steers the vehicle. The driver must control the accelerator, gear changes
and brake Safety notes on the parking systems
WARNING
Fast steering wheel movements can cause serious injury.
During the manoeuvring operation, do not reach for the steering wheel until prompted to do so by
the system.
Exception: if a dangerous situation occurs, intervene and take over the steering.
NOTICE
Park Assist uses parked vehicles, the kerbs and other objects as guidance. Make sure that the tyres
and wheel rims are not damaged when parking the vehicle. If necessary, stop the parking procedure
in good time to prevent damage to the vehicle.
Prerequisites
First read and observe the introductoryinformation and safety warnings
The following prerequisites must be met for driving into and out of parking spaces:
The traction control system (TCS) must be switched on Brake support systems
Distance: maintain a distance of 0.5 2.0 metres when driving past the parking space.
The parking space must have at least the dimensions required by Park Assist.
Speed when driving past the parking space (for parking spaces parallel to the road): not above
40 km/h (25 mph).
Speed when driving past the parking space (for parking spaces perpendicular to the road): not above
20 km/h (12 mph).
Maximum speed: 7 km/h (4 mph). An automatic braking intervention can take place when driving
into a parking space.
No trailer is connected electrically with the factory-fitted towing bracket Notes on towing a
trailer
The parking manoeuvre can be continued after the automatic brake intervention.
The automatic braking intervention takes place a maximum of once per parking manoeuvre. The
parking manoeuvre will be cancelled if a speed of approximately 7 km/h (4 mph) is exceeded again.
WARNING
Do not let the automatic braking intervention triggered by Park Assist tempt you to take any risks
while driving. The system is not a substitute for the full concentration of the driver.
Park Assist has system-related limitations. In some situations, automatic braking intervention may
function only in a limited way or not at all.
You should always be prepared to brake the vehicle yourself.
The automatic braking intervention is ended after approximately 1.5 seconds. Depress the brake
pedal of the vehicle yourself following the automatic braking intervention.
Looking for a parking space
Fig. 131 On the instrument cluster display: parking perpendicular to the road.
First read and observe the introductoryinformation and safety warnings
Key to Fig. 131
Choose parking space.Position for parking.Align the vehicle in the parking space.1Prompt to
drive forward.2Your vehicle.3Parked vehicle or obstacle.4Detected parking space.5Prompt to select
reverse gear.6Prompt to press the brake pedal.7Progress bar. Symbolically shows the relative
distance still to be driven.
The prerequisites for parking space selection must be met Prerequisitesand the vehicle must be
stationary.
Let go of the steering wheel
Select reverse gear when a reverse arrow appears on the instrument cluster display.
Accelerate carefully.
Brake when an acoustic signal sounds to indicate that you should change direction, an arrow
Fig.
0 lights up, the display lights up or a message is shown.
Drive forwards until an acoustic signal sounds or until the prompt to reverse is shown on the
instrument cluster display.
Repeat reversing and driving forwards until a corresponding message is displayed on the instrument
cluster. A signal tone may also sound.
Driving out of a parking space
Fig. 132 On the instrument cluster display: driving out of a parallel parking space.
First read and observe the introductoryinformation and safety warnings
Key to Fig. 132
Parked vehicle.
Own vehicle with reverse gear engaged.
Progress bar. Symbolically shows the relative distance still to be driven.
Direction indicator for next manoeuvre for driving out of the parking space.
Park Assist can drive out of parallel parking spaces if the prerequisites for this are met
Prerequisites
Press the button.
Use the turn signal lever to select the direction (left or right) in which you would like to drive out of
the parking space.
Select reverse gear.
Release the steering wheel when the following message is shown: Steer. intervention active.
Monitor vehicle area.
Accelerate carefully.
Brake when an acoustic signal sounds, the display lights up or until the prompt to drive forward
appears on the instrument cluster display.
Depress the brake pedal until Park Assist has finished steering or until the display in the
instrument cluster display will go out.
Repeat reversing and driving forwards until a corresponding message is displayed on the instrument
cluster. A signal tone may also sound.
Take over steering with the steering angle set by Park Assist.
Drive the vehicle out of the parking space when permitted by the traffic situation.
In some countries, Park Assist can assist the driver with an automatic braking intervention in certain
situations
Depending on the vehicle equipment and certain conditions, e.g. weather, load or inclination of the
vehicle, Park Assist can automatically brake the vehicle before an obstacle. Following this
intervention, the driver must depress the brake pedal.
The parking manoeuvre is ended if an automatic braking intervention occurs.
Rear Traffic Alert
Fig. 133 Illustration of Rear Traffic Alert: monitored area around the vehicle leaving the parking
space.
Fig. 134 Display in the Infotainment system: Rear Traffic Alert.
Rear Traffic Alert is part of the Blind Spot Monitor Driving with the Blind Spot Monitor
Switching on and off
By means of the Assist systems menu in the instrument cluster Vehicle setti
OR: with some equipment levels, by means of the button for the driver assist systems Button for
driver assist systems
OR: with some equipment levels, in the Driver assistance menu in the Infotainment system
Infotainment system controls and
Function
ng
space or manoeuvring. Rear Traffic Alert functions using radar sensors in the rear bumper.
Key to Fig. 134
Critical situation. Do not drive on!Possible critical situation.
Detection of a critical situation can also take place acoustically:
A warning signal will sound and a text message will be displayed in the instrument cluster for
vehicles without Park Distance Control.
In vehicles with Park Distance Control, an acoustic signal will sound with the continuous tone of Park
Distance Control. If the Park Distance Control is deactivated, no warning can be given to the driver
and the Rear Traffic Alert system will also be switched off temporarily.
If there is a system fault in the scanned area, the indicator lamp will light up yellow on the
instrument cluster display.
Automatic braking intervention to minimise damage
If Rear Traffic Alert detects an approaching road user and the driver has not pressed the brake, the
system can brake automatically.
Automatic braking intervention is activated when reversing at speeds of between 1 km/h (1
mph). The vehicle is held stationary for up to two seconds after vehicle standstill has been
detected.
After automatic braking intervention is activated to prevent damage to the vehicle, the system
requires approximately ten seconds before it can activate another automatic braking intervention.
Automatic braking intervention can be interrupted by pressing the accelerator or brake pedal
sharply and taking control of the vehicle.
Automatic deactivation
Rear Traffic Alert is deactivated automatically and cannot be switched on if the factory-fitted towing
bracket is electrically connected to a trailer or similar Notes on towing a trailer
electrically connected to the vehicle and the driver pulls away, a text message appears in the
instrument cluster display to inform the driver that Rear Traffic Alert has been deactivated. Rear
Traffic Alert will be automatically activated again when the trailer has been unhitched from the
vehicle. This applies if the functions were previously activated. Rear Traffic Alert must be switched
off manually for trailer towing if a non-factory-fitted towing bracket is used.
WARNING
The intelligent Rear Traffic Alert technology cannot overcome the laws of physics, and functions only
within the limits of the system. Do not let the assistance function of Rear Traffic Alert tempt you to
take any safety risks while driving. The system is not a substitute for the full concentration of the
driver.
busy roads or across several lanes.
Always pay attention to the area around the vehicle, since cyclists and pedestrians are often not
reliably detected, for example.
The Rear Traffic Alert will not always independently bring the vehicle to a complete stop.
Brake support systems
Information on brake support systems
The vehicle is fitted with brake support systems. The systems can support the driver in critical driving
or braking situations. Brake support systems cannot overcome the limits of physics and cannot
always keep the vehicle under control in every single critical driving or braking situation. The driver is
responsible for driving safety
Driving with brake support systems
The brake support systems work when the engine is running. They do not need to be operated
separately.
The brake pedal may pulsate or noises may occur while the brake support systems are regulating.
Continue to apply the necessary amount of brake pressure. Apply the necessary pressure to the
brake pedal consistently. If necessary, steer the vehicle while the brake pedal is depressed.
Electronic Stability Control (ESC)
ESC helps to reduce the risk of skidding and to improve driving stability in certain driving situations
ESC is always switched on.
Traction control system (TCS)
The TCS reduces the drive output if wheelspin occurs and adapts the drive output to suit road
surface conditions Troubleshooting
hills.
With some equipment levels, the TCS can be switched off in exceptional circumstances Switching
the TCS on and off
Anti-lock brake system (ABS)
The anti-lock brake system can prevent the wheels from locking when the brakes are applied up until
the point where the vehicle is nearly stationary and assists the driver in steering the vehicle and
keeping it under control Troubleshooting
Brake assist system
The brake assist system can help to reduce the stopping distance. The brake assist system reinforces
the braking force when the driver depresses the brake pedal quickly in an emergency situation.
If you reduce the pressure on the brake pedal, the brake assist system will switch off the brake
servo.