Get Driving and parking -> Driving systems Guide for Mercedes B Class SUV Second Generation (2011-2017)

their traction. There is an increased danger of

skidding and accidents.

Do not increase the recuperation level on slip-

pery road surfaces.

Have your vehicle winter-proofed at a qualified

specialist workshop at the onset of winter.

Drive particularly carefully on slippery road sur-

faces. Avoid sudden acceleration, steering and

braking maneuvers. Do not use cruise control.

If the vehicle threatens to skid or cannot be

stopped when moving at low speed:

Shift the DIRECT SELECT lever to position N.

The outside temperature indicator is not

designed to serve as an ice-warning device and

is therefore unsuitable for that purpose.

Changes in the outside temperature are dis-

played after a short delay.

Indicated temperatures just above the freezing

point do not guarantee that the road surface is

free of ice. The road may still be icy, especially in

wooded areas or on bridges.

You should pay special attention to road condi-

tions when temperatures are around freezing

point.

For more information on driving with snow

chains, see (Y page 259).

For more information on driving with summer

tires, see (Y page 259).

Observe the notes in the "Winter operation" sec-

tion (Y page 259).

Driving systems

Cruise control

General notes

Cruise control maintains a constant road speed

for you. It brakes automatically in order to avoid

exceeding the set speed. Change into transmis-

sion position D

(Y page 115) on long and steep

downhill gradients. This increases recuperation

in overrun mode. This relieves the load on the

brake system and prevents the brakes from

overheating and wearing too quickly.

When the engine is running, you can use the

cruise control lever to limit the speed to any

speed between 20 mph (30 km/h) and the tech-

nically permitted maximum speed of the vehicle.

Use cruise control only if road and traffic con-

ditions make it appropriate to maintain a steady

speed for a prolonged period.

The speed indicated in the speedometer may

differ slightly from the speed stored.

Important safety notes

If you fail to adapt your driving style, cruise con-

trol can neither reduce the risk of an accident

nor override the laws of physics. Cruise control

cannot take into account the road, traffic and

weather conditions. Cruise control is only an

aid. You are responsible for the distance to the

vehicle in front, for vehicle speed, for braking in

good time and for staying in your lane.

Do not use cruise control:

in road and traffic conditions which do not

allow you to maintain a constant speed e.g. in

heavy traffic or on winding roads

on slippery road surfaces. Braking or accel-

erating could cause the drive wheels to lose

traction and the vehicle could then skid

in poor visibility, e.g. due to fog, heavy rain or

snow

If there is a change of drivers, advise the new

driver of the speed stored.

Cruise control lever

Activates or increases speed

;

Activates or reduces speed

Deactivates cruise control

Activates at the current speed/last stored

speed

When you activate cruise control, the stored

speed is shown in the multifunction display for

five seconds.

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Driving systems

Driving and parking

Activation conditions

To activate cruise control, all of the following

activation conditions must be fulfilled:

the electric parking brake must be released.

ESP

must be active, but not intervening.

the transmission must be in position D.

Storing, maintaining and calling up a

speed

Storing and maintaining the current

speed

You can store the current speed if you are driv-

ing faster than 20 mph (30 km/h).

Accelerate the vehicle to the desired speed.

Briefly press the cruise control lever up : or

down ;.

Remove your foot from the accelerator pedal.

Cruise control is activated. The vehicle auto-

matically maintains the stored speed.

Cruise control may be unable to maintain

the stored speed on uphill gradients. The

stored speed is resumed when the gradient

evens out. Cruise control maintains the

stored speed on downhill gradients by auto-

matically applying the brakes.

Storing the current speed or calling up the

last stored speed

WARNING

If you call up the stored speed and it differs

from the current speed, the vehicle acceler-

ates or decelerates. If you do not know the

stored speed, the vehicle could accelerate or

brake unexpectedly. There is a risk of an acci-

dent.

Pay attention to the road and traffic condi-

tions before calling up the stored speed. If you

do not know the stored speed, store the

desired speed again.

Briefly pull the cruise control lever towards

you ?.

Remove your foot from the accelerator pedal.

The first time cruise control is activated, it

stores the current speed or regulates the

speed of the vehicle to the previously stored

speed.

Setting a speed

Keep in mind that it may take a brief moment

until the vehicle has accelerated or braked to

the speed set.

To adjust the set speed in10 km/hincre-

ments:briefly press cruise control lever : up

beyond the pressure point for a higher speed,

or down ; for a lower speed.

Keep the cruise control lever pressed beyond

the point of resistance until the desired speed

is set. Press cruise control lever up : for a

higher speed or down ; for a lower speed.

To adjust the set speed in1 km/hincre-

ments:briefly press cruise control lever up :

to the pressure point for a higher speed or

down ; for a lower speed.

Keep the cruise control lever pressed to the

point of resistance until the desired speed is

set. Press cruise control lever up : for a

higher speed or down ; for a lower speed.

Cruise control is not deactivated if you

depress the accelerator pedal. For example, if

you accelerate briefly to overtake, cruise con-

trol adjusts the vehicle's speed to the last

speed stored after you have finished overtak-

ing.

Deactivating cruise control

There are several ways to deactivate cruise con-

trol:

Briefly press the cruise control lever forwards

Brake.

Cruise control is automatically deactivated if:

the vehicle is secured with the electric park-

ing brake

you are driving at less than 20 mph (30 km/h)

ESP

intervenes or you deactivate ESP

you shift the transmission to position N while

driving

If cruise control is deactivated, you will hear a

warning tone. You will see the

Cruise Con‐Cruise Con‐

trol Off

trol Off message in the multifunction display

for approximately five seconds.

Driving systems

137

Driving and parking

When you switch off the engine, the last

speed stored is cleared.

HOLD function

General notes

The HOLD function can assist the driver in the

following situations:

when pulling away, especially on steep slopes

when maneuvering on steep slopes

when waiting in traffic

The vehicle is kept stationary without the driver

having to depress the brake pedal.

The braking effect is canceled and the HOLD

function deactivated when you depress the

accelerator pedal to pull away.

Important safety notes

WARNING

When leaving the vehicle, it can still roll away

despite being braked by the HOLD function if:

there is a malfunction in the system or in

the voltage supply.

the HOLD function has been deactivated by

pressing the accelerator pedal or the brake

pedal, e.g. by a vehicle occupant.

the electrical system in the engine com-

partment, the battery or the fuses have

been tampered with.

the battery is disconnected

There is a risk of an accident.

If you wish to exit the vehicle, always turn off

the HOLD function and secure the vehicle

against rolling away.

If the HOLD function is activated, the vehicle

brakes automatically in certain situations.

To prevent damage to the vehicle, deactivate

the HOLD function in the following or other

similar situations:

when towing the vehicle

in the car wash

Deactivating the HOLD function (Y page 138).

Activation conditions

You can activate the HOLD function if:

the vehicle is stationary

the engine is running or if it has been auto-

matically switched off by the ECO start/stop

function

the driver's door is closed or your seat belt is

fastened

the electric parking brake is released

the transmission position D, R or N is engaged

Activating the HOLD function

Make sure that the activation conditions are

met.

Depress the brake pedal.

Quickly depress the brake pedal further

until : appears in the multifunction display.

The HOLD function is activated. You can

release the brake pedal.

If depressing the brake pedal the first time

does not activate the HOLD function, wait

briefly and then try again.

Deactivating the HOLD function

The HOLD function is deactivated automatically

if:

you accelerate. On vehicles with automatic

transmission: only when the transmission is in

position D or R.

the transmission is in position P.

you depress the brake pedal again with a cer-

tain amount of pressure until : disappears

from the multifunction display.

you secure the vehicle using the electric park-

ing brake.

After a time, the electric parking brake

secures the vehicle and relieves the service

brake.

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Driving systems

Driving and parking

The electric parking brake secures the vehicle

automatically if the HOLD function is activated

and:

the driver's seat belt is not fastened and the

driver's door is open.

the engine is switched off, unless it is auto-

matically switched off by the ECO start/stop

function.

a system malfunction occurs.

the power supply is insufficient.

The

Brake ImmediatelyBrake Immediately message may also

appear in the multifunction display.

Immediately depress the brake firmly until the

warning message in the multifunction display

goes out.

The HOLD function is deactivated. The horn

sounds at regular intervals if you have switched

off the engine, released the seat belt and

opened the driver's door with the HOLD function

activated. The sounding of the horn alerts you to

the fact that the HOLD function is still activated.

If you attempt to lock the vehicle, the tone

becomes louder. The vehicle cannot be locked

until you have deactivated the HOLD function.

After switching off the engine, it can only be

started again once you have deactivated the

HOLD function.

Parking Assist PARKTRONIC

Important safety notes

Parking Assist PARKTRONIC is an electronic

parking aid with ultrasound. It monitors the area

around your vehicle using six sensors in the

front bumper and six sensors in the rear

bumper. Parking Assist PARKTRONIC visually

and audibly indicates the distance between your

vehicle and an object.

Parking Assist PARKTRONIC is only an aid. It is

not a replacement for your attention to your

immediate surroundings. You are always

responsible for safe maneuvering, parking and

exiting a parking space. When maneuvering,

parking or pulling out of a parking space, make

sure that there are no persons, animals or

objects in the area in which you are maneuver-

ing.

When parking, pay particular attention to

objects above or below the sensors, such as

flower pots or trailer drawbars. Parking Assist

PARKTRONIC does not detect such objects

when they are in the immediate vicinity of the

vehicle. You could damage the vehicle or the

objects.

The sensors may not detect snow and other

objects that absorb ultrasonic waves.

Ultrasonic sources such as an automatic car

wash, the compressed-air brakes of a truck or

a pneumatic drill could cause Parking Assist

PARKTRONIC to malfunction.

Parking Assist PARKTRONIC may not function

correctly on uneven terrain.

Parking Assist PARKTRONIC is activated auto-

matically when you:

switch on the ignition

shift the transmission to position D, R or N

release the electric parking brake

Parking Assist PARKTRONIC is deactivated at

speeds above 11 mph (18 km/h). It is reactiva-

ted at lower speeds.

Range of the sensors

General notes

Parking Assist PARKTRONIC does not take into

account obstacles located:

below the detection range, e.g. people, ani-

mals or objects.

above the detection range, e.g. overhanging

loads, tail sections or loading ramps of goods

vehicles.

Sensors in the front bumper, left-hand side

(example)

The sensors must be free from dirt, ice or slush.

They can otherwise not function correctly. Clean

the sensors regularly, taking care not to scratch

or damage them (Y page 237).

Driving systems

139

Driving and parking

Range

Detection range of front sensors

;

Detection range of rear sensors

Front sensors

Center Approx. 40 in (approx.

100 cm)

Corners Approx. 24 in (approx.

60 cm)

Rear sensors

Center Approx. 48 in (approx.

120 cm)

Corners Approx. 32 in (approx.

80 cm)

Minimum distance

Center Approx. 8 in (approx. 20 cm)

Corners Approx. 6 in (approx. 15 cm)

If there is an obstacle within this range, the rel-

evant warning displays light up and a warning

tone sounds. If the distance falls below the min-

imum, the distance may no longer be shown.

Warning displays

Segments on the left-hand side of the vehi-

cle

;

Segments on the right-hand side of the vehi-

cle

Segments showing operational readiness

The warning displays show the distance

between the sensors and the obstacle. The

warning display for the front area is located on

the dashboard above the center air vents. The

warning display for the rear area is located on

the headliner in the rear compartment.

The warning display for each side of the vehicle

is divided into five yellow and two red segments.

Parking Assist PARKTRONIC is operational if yel-

low segments showing operational readiness =

light up.

The transmission position of the automatic

transmission and the direction in which the vehi-

cle is rolling determine which warning display is

active when the engine is running.

Transmission posi-

tion

Warning display

Front area activated

R, N or the vehicle is

rolling backwards

Rear and front areas

activated

No areas activated

One or more segments light up as the vehicle

approaches an obstacle, depending on the vehi-

cle's distance from the obstacle.

From the:

sixth segment onwards, you will hear an inter-

mittent warning tone for approximately two

seconds.

seventh segment onwards, you will hear a

warning tone for approximately two seconds.

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Driving systems

Driving and parking

This indicates that you have now reached the

minimum distance.

Deactivating or activating Parking

Assist PARKTRONIC

Indicator lamp

;

Deactivates or activates Parking Assist

PARKTRONIC

If indicator lamp : is lit, Parking Assist

PARKTRONIC is deactivated.

Parking Assist PARKTRONIC is automati-

cally activated when you turn the SmartKey to

position 2 in the ignition lock.

Problems with Parking Assist PARKTRONIC

Problem

Possible causes/consequences and MM Solutions

Only the red segments in

the Parking Assist

PARKTRONIC warning

displays are lit. You also

hear a warning tone for

approximately two sec-

onds.

Parking Assist

PARKTRONIC is then

deactivated and the indi-

cator lamp on the

PARKTRONIC button

lights up.

Parking Assist PARKTRONIC has malfunctioned and has been deacti-

vated.

If problems persist, have Parking Assist PARKTRONIC checked at a

qualified specialist workshop.

Only the red segments in

the Parking Assist

PARKTRONIC warning

displays are lit. Parking

Assist PARKTRONIC is

then deactivated.

The Parking Assist PARKTRONIC sensors are dirty or there is inter-

ference.

Clean the Parking Assist PARKTRONIC sensors (Y page 237).

Switch the ignition back on.

The problem may be caused by an external source of radio or ultra-

sound waves.

Check to see if Parking Assist PARKTRONIC works at a different

location.

Driving systems

141

Driving and parking

Parking Pilot

General notes

Parking Pilot is an electronic parking aid with

ultrasound. It measures the road on both sides

of the vehicle. A parking symbol indicates a suit-

able parking space. Active steering intervention

can assist you during maneuvering and parking.

Parking Assist PARKTRONIC is also available

(Y page 139).

Important safety notes

Parking Pilot is only an aid. It is not a replace-

ment for your attention to your immediate sur-

roundings. You are always responsible for safe

maneuvering, parking and exiting a parking

space. Make sure that no persons, animals or

objects are in the maneuvering range.

When Parking Assist PARKTRONIC is deactiva-

ted, Parking Pilot is also unavailable.

WARNING

While parking or pulling out of a parking

space, the vehicle swings out and can drive

onto areas of the oncoming lane. This could

result in a collision with another road user.

There is a risk of an accident.

Pay attention to other road users. Stop the

vehicle if necessary or cancel the Parking Pilot

parking procedure.

If unavoidable, you should drive over obsta-

cles such as curbs slowly and not at a sharp

angle. Otherwise, you may damage the

wheels or tires.

Parking Pilot may also display spaces not suita-

ble for parking, e.g.:

where parking or stopping is prohibited

in front of driveways or entrances and exits

on unsuitable surfaces

Parking tips:

On narrow roads, drive as close to the parking

space as possible.

Parking spaces that are littered or overgrown

might be identified or measured incorrectly.

Parking spaces that are partially occupied by

trailer drawbars might not be identified as

such or be measured incorrectly.

Snowfall or heavy rain may lead to a parking

space being measured inaccurately.

Pay attention to the warning messages of

Parking Pilot PARKTRONIC during the parking

procedure (Y page 140).

You can intervene to correct the steering pro-

cedure at any time. Parking Pilot will then be

canceled.

When transporting a load that protrudes from

your vehicle, you must not use Parking Pilot.

Never use Parking Pilot when snow chains are

mounted.

Make sure that the tire pressures are always

correct. This has a direct influence on the

parking characteristics of the vehicle.

Use Parking Pilot for parking spaces that are:

parallel to the direction of travel

on straight roads, not bends

on the same level as the road, e.g. not on the

pavement

Detecting parking spaces

Objects located above the detection range of

Parking Pilot will not be detected when the park-

ing space is measured. These are not taken into

account when the parking procedure is calcula-

ted, e.g. overhanging loads, truck overhangs or

loading ramps.

WARNING

If there are objects above the detection range:

Parking Pilot may steer in too early

the vehicle may not stop in front of these

objects

You may cause a collision as a result. There is

a risk of an accident.

If objects are located above the detection

range, stop and deactivate Parking Pilot.

For further information on the detection range

(Y page 139).

Parking Pilot does not assist you parking in

spaces parallel to the direction of travel if:

the parking space is on a curb

the parking space is apparently blocked, for

example by foliage or grass paving blocks

142

Driving systems

Driving and parking

the range of movement is too small

the parking space is bordered by an obstacle

which is not clearly defined such as a tree or a

trailer

Detected parking space on the left

;

Parking symbol

Detected parking space on the right

Parking Pilot is activated automatically when

driving forwards. The system is operational at

speeds of up to approximately 22 mph

(35 km/h). While in operation, the system inde-

pendently locates and measures parking spaces

on both sides of the vehicle.

Parking Pilot will only detect parking spaces:

parallel to the direction of travel

that are at least 59 in (1.5 m) wide

that are at least 51 in (1.3 m) longer than your

vehicle

When driving at speeds below 19 mph

(30 km/h), you will see parking symbol ; as a

status indicator in the instrument cluster. When

a parking space has been detected, an arrow

towards the right or the left also appears. Park-

ing Pilot only displays parking spaces on the

front-passenger side as standard. Parking

spaces on the driver's side are displayed as

soon as the turn signal on the driver's side is

activated. When parking on the driver's side,

this must remain activated until you confirm the

use of Parking Pilot by pressing the a button

on the multifunction steering wheel.

A parking space is displayed while you are driv-

ing past it, and until you are approximately 50 ft

(15 m) away from it.

Parking

WARNING

Parking Pilot merely aids you by intervening

actively in the steering. If you do not apply the

brakes yourself, there is the risk of an acci-

dent.

Always apply the brakes yourself while

maneuvering and parking.

Stop the vehicle when the parking space sym-

bol shows the desired parking space in the

instrument cluster.

Shift the transmission to position R.

The

Start Parking Pilot?Start Parking Pilot? Yes: OKYes: OK No:No:

% message appears in the multifunction

display.

To cancel the procedure:press the %

button on the multifunction steering wheel or

pull away.

To park using Parking Pilot: press the a

button on the multifunction steering wheel.

The

Parking Pilot Active AccelerateParking Pilot Active Accelerate

and Brake

and Brake Observe SurroundingsObserve Surroundings mes-

sage appears in the multifunction display.

Let go of the multifunction steering wheel.

Back up the vehicle, being ready to brake at all

times. When backing up, drive at a speed

below approximately 6 mph (10 km/h). Oth-

erwise Parking Pilot is canceled.

Maneuvering may be required in tight parking

spaces.

Stop when Parking Assist PARKTRONIC

sounds the continuous warning tone, if not

before.

Maneuvering may be required in tight parking

spaces.

The

Parking Pilot Active Select DParking Pilot Active Select D

Observe Surroundings

Observe Surroundings message appears in

the multifunction display.

Shift the transmission to position D while the

vehicle is stationary.

Parking Pilot immediately steers in the other

direction.

The

Parking Pilot Active AccelerateParking Pilot Active Accelerate

and Brake

and Brake Observe SurroundingsObserve Surroundings mes-

sage appears in the multifunction display.

You will achieve the best results by waiting

for the steering procedure to complete before

pulling away.

Drive forwards and be ready to brake at all

times.

Maneuvering may be required in tight parking

spaces.

Stop when Parking Assist PARKTRONIC

sounds the continuous warning tone, if not

before.

Driving systems

143

Driving and parking

The Parking Pilot Active Select RParking Pilot Active Select R

Observe Surroundings

Observe Surroundings message appears in

the multifunction display.

As soon as the parking procedure is complete,

the

ParkingParking PilotPilot EndedEnded message appears in

the multifunction display and a warning tone

sounds. The vehicle is now parked.

Parking Pilot no longer supports you with steer-

ing interventions and brake applications. When

Parking Pilot is ended, you must steer and brake

again yourself. Parking Assist PARKTRONIC is

still available.

Parking tips:

The way your vehicle is positioned in the park-

ing space after parking is dependent on vari-

ous factors. These include the position and

shape of the vehicles parked in front and

behind it and the conditions of the location. It

may be the case that Parking Pilot guides you

too far into a parking space, or not far enough

into it. In some cases, it may also lead you

across or onto the curb. If necessary, you

should abort the parking procedure with Park-

ing Pilot.

You can also select preselect transmission

position D. The vehicle redirects and does not

drive as far into the parking space. Should the

transmission change take place too early, the

parking procedure will be canceled. A sensi-

ble parking position can no longer be ach-

ieved from this position.

Exiting a parking space

In order for Parking Pilot to support you when

exiting the parking space:

you need to have parked using Parking Pilot.

the border of the parking space must be high

enough at the front and the rear. A curb stone

is too small, for example.

the border of the parking space must not be

too wide, as the position of the vehicle must

not exceed an angle of 45° to the starting

position as it is maneuvered into the parking

space.

a maneuvering distance of at least 3.3 ft

(1.0 m) must be available.

Parking Pilot can assist you with exiting a park-

ing space only if you have parked the vehicle

parallel to the direction of travel using Parking

Pilot.

Start the engine.

Release the electric parking brake.

Switch on the turn signal in the direction you

will drive out of the parking space.

Shift the transmission to position D or R.

The

Start Parking Pilot?Start Parking Pilot? Yes: OKYes: OK No:No:

% message appears in the multifunction

display.

To cancel the procedure:press the %

button on the multifunction steering wheel or

pull away.

To exit a parking space using Parking

Pilot: press the a button on the multi-

function steering wheel.

The

Parking Pilot Active AccelerateParking Pilot Active Accelerate

and Brake

and Brake Observe SurroundingsObserve Surroundings mes-

sage appears in the multifunction display.

Let go of the multifunction steering wheel.

Pull away, being ready to brake at all times. Do

not exceed a maximum speed of approx-

imately 6 mph (10 km/h) when exiting a park-

ing space. Otherwise, Parking Pilot is can-

celed immediately.

Stop when Parking Assist PARKTRONIC

sounds the continuous warning tone, if not

before.

Depending on the message or as required,

shift the transmission to position D or R.

Parking Pilot immediately steers in the other

direction. The

Parking Pilot ActiveParking Pilot Active

Accelerate and Brake

Accelerate and Brake Observe Sur‐Observe Sur‐

roundings

roundings message appears in the multi-

function display.

You will achieve the best results by waiting

for the steering procedure to complete before

pulling away.

If you back up after activation, the steering

wheel is moved to the straight-ahead posi-

tion.

Drive forwards and reverse as prompted by

the Parking Assist PARKTRONIC warning dis-

plays, several times if necessary.

Once you have exited the parking space com-

pletely, the steering wheel is moved to the

straight-ahead position. You hear a tone and the

ParkingParking PilotPilot FinishedFinished message appears in

the multifunction display. You will then have to

steer and merge into traffic on your own. Park-

ing Assist PARKTRONIC is still available. You can

take over the steering before the vehicle has

exited the parking space completely. This is

144

Driving systems

Driving and parking

useful, for example when you recognize that it is

already possible to pull out of the parking space.

Canceling Parking Pilot

Stop the movement of the multifunction

steering wheel or steer yourself.

Parking Pilot is canceled immediately. The

ParkingParking PilotPilot CanceledCanceled message appears

in the multifunction display.

Press the PARKTRONIC button (Y page 141).

Parking Assist PARKTRONIC is switched off

and Parking Pilot is immediately canceled.

The

Parking Pilot CanceledParking Pilot Canceled message

appears in the multifunction display.

Parking Pilot is canceled automatically when:

the electric parking brake is engaged

transmission position P is selected

parking using Parking Pilot is no longer pos-

sible

you are driving faster than 6 mph (10 km/h)

a wheel spins, ESP

intervenes or fails. In

such cases the ÷ warning lamp lights up in

the instrument cluster

A warning tone sounds. The parking symbol dis-

appears and the multifunction display shows the

Parking Pilot CanceledParking Pilot Canceled message.

When Parking Pilot is canceled, you must steer

and brake again yourself.

If a system malfunction occurs, the vehicle is

braked to a standstill. To drive on, depress the

accelerator again.

Rear view camera

General notes

Rear view camera : is an optical parking and

maneuvering aid. It shows the area behind your

vehicle with guide lines in the multimedia sys-

tem display.

The area behind the vehicle is displayed as a

mirror image, as in the rear view mirror.

The text shown in the multimedia system

display depends on the language setting. The

following are examples of rear view camera

messages in the multimedia system display.

Observe the notes on cleaning (Y page 238).

Important safety notes

The rear view camera is only an aid. It is not a

replacement for your attention to your immedi-

ate surroundings. You are always responsible

for safe maneuvering and parking. When maneu-

vering or parking, make sure that there are no

persons, animals or objects in the area in which

you are maneuvering.

Under the following circumstances, the rear

view camera will not function, or will function in

a limited manner:

if the tailgate is open

in heavy rain, snow or fog

at night or in very dark places

if the camera is exposed to very bright light

if the area is lit by fluorescent bulbs or LED

lighting (the display may flicker)

if there is a sudden change in temperature,

e.g. when driving into a heated garage in win-

ter

if the camera lens is dirty or obstructed

Observe the notes on cleaning

(Y page 238)

if the rear of your vehicle is damaged. In this

case, have the camera position and setting

checked at a qualified specialist workshop

The field of vision and other functions of the rear

view camera may be restricted due to additional

accessories on the rear of the vehicle (e.g.

license plate holder, bicycle rack).

Driving systems

145

Driving and parking

Activating/deactivating the rear view

camera

To activate: make sure that the SmartKey is

in position 2 in the ignition lock.

Make sure that the

Activation by R gearActivation by R gear

function is selected in the multimedia system;

see the Digital Operator's Manual.

Engage reverse gear.

The area behind the vehicle is shown with

guide lines in the multimedia system display.

The image from the rear view camera is avail-

able throughout the maneuvering process.

To deactivate: the rear view camera deacti-

vates if you shift the transmission to P or after

driving forwards a short distance.

Messages in the multimedia system dis-

play

The rear view camera may show a distorted view

of obstacles, show them incorrectly or not at all.

The rear view camera does not show objects in

the following positions:

very close to the rear bumper

under the rear bumper

in the area immediately above the tailgate

handle

Objects not at ground level may appear to

be further away than they actually are, e.g.:

the bumper of a parked vehicle

the drawbar of a trailer

the ball coupling of a trailer tow hitch

the rear section of an HGV

a slanted post

Use the guidelines only for orientation.

Approach objects no further than the bottom-

most guideline.

Yellow guide line at a distance of approx-

imately 13 ft (4.0 m) from the rear of the

vehicle

;

White guide line without turning the steering

wheel, vehicle width including the exterior

mirrors (static)

Yellow guide line for the vehicle width

including the exterior mirrors, for current

steering wheel angle (dynamic)

Yellow lane marking of the tires at current

steering wheel angle (dynamic)

Yellow guide line at a distance of approx-

imately 3 ft (1.0 m) from the rear of the vehi-

cle

Vehicle center axle (marker assistance)

Bumper

Red guide line at a distance of approximately

12 in (0.30 m) from the rear of the vehicle

146

Driving systems

Driving and parking

Front warning display

;

Additional measurement operational readi-

ness indicator for Parking Assist

PARKTRONIC

Rear warning display

When Parking Assist PARKTRONIC is opera-

tional (Y page 140), additional measurement

operational readiness indicator ; appears in

the multimedia system display. If the Parking

Assist PARKTRONIC warning displays are active

or light up, warning displays : and = are also

active or light up correspondingly in the multi-

media system display.

"Reverse parking" function

Backing up straight into a parking space

without turning the steering wheel

White guide line without turning the steering

wheel, vehicle width including the exterior

mirrors (static)

;

Yellow guide line for the vehicle width

including the exterior mirrors, for current

steering wheel angle (dynamic)

Yellow guide line at a distance of approx-

imately 3 ft (1.0 m) from the rear of the vehi-

cle

Red guide line at a distance of approximately

12 in (0.30 m) from the rear of the vehicle

Make sure that the rear view camera is

switched on (Y page 146).

The lane and the guide lines are shown.

With the help of white guide line :, check

whether the vehicle will fit into the parking

space.

Using white guide line : as a guide, carefully

back up until you reach the end position.

Red guide line ? is then at the end of the

parking space. The vehicle is almost parallel

in the parking space.

Reverse perpendicular parking with the

steering wheel at an angle

Parking space marking

;

Yellow guide line for the vehicle width

including the exterior mirrors, for current

steering wheel angle (dynamic)

Drive past the parking space and bring the

vehicle to a standstill.

Make sure that the rear view camera is

switched on (Y page 146).

The lane and the guide lines are shown.

While the vehicle is at a standstill, turn the

steering wheel in the direction of the parking

space until yellow guide line ; reaches park-

ing space marking :.

Keep the steering wheel in that position and

back up carefully.

Driving systems

147

Driving and parking

Yellow guide line for the vehicle width

including the exterior mirrors, for current

steering wheel angle (dynamic)

Stop the vehicle when it is almost exactly in

front of the parking space.

The white lane should be as close to parallel

with the parking space marking as possible.

White guide line at current steering wheel

angle

;

Parking space marking

Turn the steering wheel to the center position

while the vehicle is stationary.

Red guide line at a distance of approximately

12 in (0.30 m) from the rear of the vehicle

;

White guide line without turning the steering

wheel

End of parking space

Back up carefully until you have reached the

final position.

Red guide line : is then at end of parking

space =. The vehicle is almost parallel in the

parking space.

Wide-angle function

Symbol for the wide-angle view function

;

Own vehicle

Parking Assist PARKTRONIC warning dis-

plays

Select this view when you are driving out of an

exit and the view of crossing traffic is restricted,

for example.

ATTENTION ASSIST

General notes

ATTENTION ASSIST helps you during long,

monotonous journeys, such as on highways. It is

active in the 37 mph (60 km/h) to 125 mph

148

Driving systems

Driving and parking

(200 km/h) range. If ATTENTION ASSIST

detects typical indicators of fatigue or increas-

ing lapses in concentration on the part of the

driver, it suggests taking a break.

Important safety notes

ATTENTION ASSIST is only an aid to the driver. It

might not always recognize fatigue or increasing

inattentiveness in time or fail to recognize them

at all. The system is not a substitute for a well-

rested and attentive driver.

The functionality of ATTENTION ASSIST is

restricted and warnings may be delayed or not

occur at all:

if the length of the journey is less than approx-

imately 30 minutes

if the road condition is poor, e.g. if the surface

is uneven or if there are potholes

if there is a strong side wind

if you have adopted a sporty driving style with

high cornering speeds or high rates of accel-

eration

if you are predominantly driving slower than

37 mph (60 km/h) or faster than 125 mph

(200 km/h)

if the time has been set incorrectly

in active driving situations, such as when you

change lanes or change your speed

ATTENTION ASSIST is reset when you continue

your journey and starts assessing your tiredness

again if:

you switch off the engine

you take off your seat belt and open the driv-

er's door, e.g. for a change of drivers or to

take a break

Displaying the attention level

You can have current status information dis-

played in the assistance menu (Y page 162) of

the on-board computer.

Select the Assistance display for Attention

Assist using the on-board computer

(Y page 162).

The following information is displayed:

Length of the journey since the last break.

The

AttentionAttention LevelLevel determined by ATTEN-

TION ASSIST, displayed in a bar display in five

levels from high to low

If ATTENTION ASSIST is unable to calculate

the attention level and cannot output a warn-

ing, the

System PassiveSystem Passive message appears.

The bar display then changes the display,

such as when you are driving at a speed below

37 mph (60 km/h) or above 124 mph

(200 km/h).

Activating ATTENTION ASSIST

Activate ATTENTION ASSIST using the on-

board computer (Y page 163).

The system determines the attention level of

the driver depending on the setting selected:

StandardStandard selected: the sensitivity with which

the system determines the attention level is set

to normal.

SensitiveSensitive selected: the sensitivity is set

higher. The attention level detected by Attention

Assist is adapted accordingly and the driver is

warned earlier.

When ATTENTION ASSIST is deactivated, the

é symbol appears in the multifunction dis-

play in the assistance graphic display.

When ATTENTION ASSIST has been deactivated,

it is automatically reactivated after the engine

has been stopped. The sensitivity selected cor-

responds to the last selection activated (stand-

ard/sensitive).

Warning in the multifunction display

If fatigue or increasing lapses in concentration

are detected, a warning appears in the multi-

function display:

ATTENTION ASSISTATTENTION ASSIST Take aTake a

Break!

Break!.

In addition to the message shown in the multi-

function display, you will then hear a warning

tone.

Driving systems

149

Driving and parking

Driving and parking -> Driving systems for Your Mercedes B Class SUV Second Generation (2011-2017)

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