Get Light and sight Guide for Mercedes C Class 4 Door Fourth Generation (2014-2021)

120 Light and sight

Information about lighting systems and your

responsibility

Light switch

Exterior lighting

Notes on adjusting the lights when driving

abroad

Operating the light switch

The various lighting systems of the vehicle are

only aids. The driver of the vehicle is responsible

for correct vehicle illumination in accordance

with the prevailing light and visibility conditions,

legal requirements and traffic situation.

Vehicles with halogen or static LED head‐

lamps: it is not necessary to convert the head‐

lamps. The legal requirements are also met in

countries in which traffic drives on the other

side of the road.

Vehicles with Intelligent Light System: before

crossing the border into countries in which traf‐

fic drives on the other side of the road, it is nec‐

essary to convert the headlamps to symmetrical

low beam (/ page 128).

Once the headlamps have been converted:

R

Oncoming traffic will not be dazzled

R

The edge of the road will not be illuminated

as far or as high

1

W Left-hand parking lights

X Right-hand parking lights

T Standing lights and licence plate light‐

ing

Ã Automatic driving lights (preferred light

switch position)

R

The "motorway mode" and "enhanced fog

2

light" functions will not be available

3

The headlamps must be reset to asymmetrical

low beam when you return from abroad.

4

Light and sight 121

Switching the rear fog lights on or off

The exterior lighting (except standing and park‐

ing lights) will switch off automatically when the

driver's door is opened.

5

L Low beam/high beam

R Switches the rear fog light on/off

Requirements:

6

R

The light switch is in the L or Ã posi‐

tion.

When low beam is activated, the indicator lamp

for the standing lights T will be deactivated

and replaced by the low-beam indicator lamp

L.

R

Observe the notes on surround lighting

(/ page 128).

#

Press the R button.

Automatic driving lights function

The standing lights, low beam and daytime run‐

ning lights are switched on automatically

depending on the ignition status and the light

conditions.

Please observe the country-specific laws on the

use of rear fog lamps.

#

Always park your vehicle safely using suffi‐

cient lighting, in accordance with the rele‐

vant legal stipulations.

Adjusting the headlamp range (vehicles with

halogen headlamps)

The headlamp range adjuster allows you to

adjust the cone of light from the headlamps in

relation to the vehicle's load condition.

NOTE Battery discharging by operating

the standing lights

*

&

WARNING Risk of accident when the

dipped beam is switched off in poor visi‐

bility

Operating the standing lights over a period of

hours puts a strain on the battery.

When the light switch is set to Ã, the

dipped beam may not be switched on auto‐

matically if there is fog, snow or other causes

of poor visibility such as spray.

#

Where possible, switch on the

right X or left W parking light.

In the event of severe battery discharging, the

standing lights or parking lights will be switched

off automatically to facilitate the next engine

start.

#

In such cases, turn the light switch to

L.

The automatic driving lights are only an aid. You

are responsible for vehicle lighting.

122 Light and sight

#

Turn the headlamp range adjuster to the

position that corresponds to the load condi‐

tion of your vehicle.

3

4

Headlamp flashing

Turn signal light, left

#

Use the combination switch to activate the

desired function.

Operating the combination switch for the

lights

High beam

#

To switch on: turn the light switch to the

L or Ã position.

#

Push the combination switch beyond the

point of resistance in the direction of arrow

1.

When the high beam is activated, the indica‐

tor lamp for low beam L will be deactiva‐

ted and replaced by the indicator lamp for

high beam K.

To switch off: move the combination switch

back to its starting position.

#

g

1

2

3

Driver's seat and front passenger seat occu‐

pied

Driver's seat, front passenger seat and rear

seats occupied

Driver's seat, front passenger seat and rear

seats occupied, boot laden

Driver's seat and front passenger seat occu‐

pied and maximum permissible rear axle

load utilised

Headlamp flashing

#

Pull the combination switch in the direction

of arrow 3.

1

2

High beam

Turn signal light, right

Light and sight 123

Turn signal light

Activating/deactivating the hazard warning

lights

When you pull away again, the hazard warning

light system will switch off automatically at

approximately 10 km/h. You can also switch off

the hazard warning light system using but‐

ton 1.

#

To indicate briefly: push the combination

switch briefly to the point of resistance in the

direction of arrow 2 or 4.

The corresponding turn signal light will flash

three times.

Adaptive functions, MULTIBEAM LED

#

To indicate permanently: push the combi‐

nation switch beyond the point of resistance

in the direction of arrow 2 or 4.

Intelligent Light System function

The MULTIBEAM LED headlamps adapt to the

driving and weather situation and provide exten‐

ded functions for improved illumination of the

road.

The system comprises the following functions:

R

Active headlamps (/ page 124)

R

Cornering light (/ page 124)

R

Motorway mode (/ page 124)

R

Enhanced fog light function (/ page 125)

Adverse weather light (/ page 125)

City lighting (/ page 125)

#

Press button 1.

R

The hazard warning lights will switch on auto‐

matically if:

R

the airbag has been deployed.

the vehicle is heavily braked from a speed of

more than 70 km/h to a standstill.

System limits

R

The system is active only when it is dark.

124 Light and sight

Active headlamps function

Cornering light function

Roundabout and junction function: the cor‐

nering light will be activated on both sides based

on an evaluation of the vehicle's current GPS

position. It will remain active until after the vehi‐

cle has left the roundabout or the junction.

Motorway mode function

Motorway mode increases the range and bright‐

ness of the cone of light, enabling better visibil‐

ity.

Functions of the active headlamps:

The cornering light improves the illumination of

the carriageway over a wide angle in the turning

direction, enabling better visibility on tight

bends, for example. It can be activated only

when the low beam is switched on.

R

The headlamps follow the steering move‐

ments.

R

Relevant areas are better illuminated during

a journey.

The function is active in the following cases:

The functions are active when the low beam is

switched on.

Depending on the vehicle's equipment, the

course of the lane in which you are driving will

also be evaluated and the active headlamps

function will adjust the light in advance.

R

At speeds below 40 km/h when the turn sig‐

nal light is switched on or the steering wheel

is turned

The function is active if a motorway journey is

detected by means of:

R

At speeds between 40 km/h and 70 km/h

and when the steering wheel is turned

R

the vehicle's speed

R

the multifunction camera

Light and sight 125

R

the GPS

The function is automatically deactivated under

the following conditions:

The ignition is switched on.

The function is not active in the following cases:

R

Multimedia system:

4

5

R

At speeds above 100 km/h after activation.

5

Vehicle

÷ Light settings

at speeds below 80 km/h.

R

When the rear fog light is switched off.

Intell. Light System

Activate O or deactivate ª the function.

Enhanced fog light function

% You can activate the enhanced fog light func‐

tion up to a speed of 100 km/h by switching

on the rear fog light.

#

The enhanced fog light function reduces self-

dazzling and improves the illumination of the

edge of the carriageway.

Adaptive Highbeam Assist

Function of the adverse weather light

The adverse weather light reduces reflections in

rainy conditions by dimming individual LEDs in

the headlamps. This reduces glare for the driver

and other road users.

Adaptive Highbeam Assist function

&

WARNING Risk of accident despite

Adaptive Highbeam Assist

Adaptive Highbeam Assist does not react to:

The city lighting function

R

road users without lights, e.g. pedes‐

trians

City lighting improves the illumination of road‐

sides in urban areas using a broad distribution of

light.

R

road users with poor lighting, e.g. cyclists

R

The function is active in the following cases:

road users whose lighting is obstructed,

e.g. by a barrier

The function is automatically activated under the

following conditions:

R

At low speeds

R

In illuminated parts of urban areas

On very rare occasions, Adaptive Highbeam

Assist may fail to recognise other road users

with their own lighting, or may recognise

them too late.

R

At speeds below 70 km/h and when the rear

fog light is switched on.

Switching the Intelligent Light System

on/off

Requirements:

126 Light and sight

The high beam will switch off automatically in

the following cases:

In these, or in similar situations, the auto‐

matic high beam will not be deactivated or

will be activated despite the presence of

other road users.

R

At speeds below 25 km/h.

R

If other road users are detected.

#

Always observe the road and traffic

R

If street lighting is sufficient.

conditions carefully and switch off the

high beam in good time.

The system's optical sensor is located behind

the windscreen near the overhead control panel.

Adaptive Highbeam Assist cannot take into

account road, weather or traffic conditions.

Detection may be restricted in the following

cases:

Switching Adaptive Highbeam Assist on/off

#

To switch on: turn the light switch to

the Ã position.

#

Switch on the high beam using the combina‐

tion switch.

R

In poor visibility, e.g. fog, heavy rain or snow

R

If Adaptive Highbeam Assist is activated,

the _ indicator lamp will light up on the

multifunction display.

If there is dirt on the sensors or the sensors

are obscured

The Adaptive Highbeam Assist automatically

switches between the following types of light:

Adaptive Highbeam Assist is only an aid. You are

responsible for adjusting the vehicle's lighting to

the prevailing light, visibility and traffic condi‐

tions.

#

To switch off: switch off the high beam

R

Low beam

using the combination switch.

R

High beam

At speeds greater than 30 km/h:

R

If no other road users are detected, the high

beam will be switched on automatically.

Light and sight 127

Adaptive Highbeam Assist Plus

#

Always observe the road and traffic

conditions carefully and switch off the

high beam in good time.

Adaptive Highbeam Assist Plus function

&

WARNING Risk of accident despite

Adaptive Highbeam Assist Plus

Adaptive Highbeam Assist Plus cannot take into

account road, weather or traffic conditions.

Detection may be restricted in the following

cases:

Adaptive Highbeam Assist Plus does not

react to:

R

road users without lights, e.g. pedes‐

trians

road users with poor lighting, e.g. cyclists

road users whose lighting is obstructed,

e.g. by a barrier

R

In poor visibility, e.g. fog, heavy rain or snow

R

if there is dirt on the sensors or the sensors

are obscured

R

Adaptive Highbeam Assist Plus is only an aid.

You are responsible for adjusting the vehicle's

lighting to the prevailing light, visibility and traf‐

fic conditions.

On very rare occasions, Adaptive Highbeam

Assist Plus may fail to recognise other road

users with their own lighting, or may recog‐

nise them too late.

Adaptive Highbeam Assist Plus automatically

switches between the following types of light:

R

Low beam

Partial high beam

High beam

ULTRA RANGE Highbeam

In these, or in similar situations, the auto‐

matic high beam will not be deactivated or

will be activated despite the presence of

other road users.

R

128 Light and sight

R

Setting the dipped beam

ULTRA RANGE Highbeam increases the bright‐

ness of the cone of light to the legally permitted

maximum.

Partial high beam uses the high beam to shine

past other road users rather than dazzling them.

The vehicle in front will be illuminated by the low

beam.

If highly reflective signs are detected, ULTRA

RANGE Highbeam will be switched off auto‐

matically.

Multimedia system:

4

5

Vehicle

÷ Light settings

At speeds greater than approximately 50 km/h:

R

5

Dipped-beams

The headlamp range of the low beam is regu‐

lated automatically based on the distance to

other road users.

#

Select Left-side traffic or Right-side traffic.

At speeds below 25 km/h or when there is suffi‐

cient street lighting:

Setting the exterior lighting switch-off delay

time

The system's optical sensor is located behind

the windscreen near the overhead control panel.

R

The partial high beam and the high beam will

be switched off automatically.

Multimedia system:

Switching Adaptive Highbeam Assist Plus

on/off

4

5

Vehicle

÷ Light settings

5

At speeds greater than 30 km/h:

Exterior light shut-off

#

To switch on: turn the light switch to

the Ã position.

Switch on the high beam using the combina‐

tion switch.

When the high beam is switched on automat‐

ically in the dark, the _ indicator lamp on

the multifunction display will light up.

To switch off: switch off the high beam

using the combination switch.

R

If no other road users are detected, the high

beam will be switched on automatically.

#

Set the switch-off delay time.

#

R

If other road users are detected, the partial

high beam will be switched on automatically.

Setting the surround lighting

Multimedia system:

At speeds above 40 km/h:

4

5

Vehicle

÷ Light settings

R

If no other road users are detected on a

5

Locator lighting

#

straight road, ULTRA RANGE Highbeam will

be switched on automatically.

#

Activate O or deactivate ª the function.

R

If other road users are detected, the partial

high beam will be switched on automatically.

If the surround lighting is switched on, the exte‐

rior lighting remains lit for 40 seconds after the

Light and sight 129

#

Adjusting the ambient lighting

Multimedia system:

vehicle is unlocked. When you start the vehicle,

the surround lighting is deactivated and the

automatic driving lights are activated.

To switch on or off: press button 1 – 5

accordingly.

Control panel in the grab handle

4

5

Vehicle

÷ Light settings

5

Ambient lighting

Interior lighting

Adjusting the interior lighting

Setting the colour

#

Select Colour.

Front overhead control panel

#

Set a colour.

Adjusting the brightness

#

Select Brightness.

#

Set a brightness value.

Activating the brightness for zones

1

p Rear reading lamp

#

Select Brightness zones.

#

To switch on or off: press button 1.

#

Activate O or deactivate ª the function.

The Display, Front and Rear zones can be set

separately.

1

2

3

4

5

p Front left reading lamp

| Automatic interior lighting control

c Front interior lighting

u Rear interior lighting

p Front right reading lamp

130 Light and sight

Setting the interior lighting switch-off delay

time

R

Overview of the bulbs to be changed

Halogen headlamps

Do not use a bulb if it has been dropped or if

its glass has been scratched. The bulb may

otherwise explode.

Do not touch the glass bulb with your bare

hands.

Multimedia system:

R

4

5

Vehicle

÷ Light settings

5

Interior light shut-off

Protect bulbs from moisture and do not allow

bulbs to come into contact with liquids.

#

Set the switch-off delay time.

Changing bulbs (only for vehicles with halo‐

gen headlamps)

Notes on changing bulbs

&

WARNING Risk of burns from hot com‐

ponent parts whilst replacing a bulb

Bulbs, lamps and plugs can become very hot

during operation.

When replacing a bulb, you could burn your‐

self on these component parts.

1

2

3

Turn signal light: PWY 24 W bulb

High beam: H7 55 W bulb

Low beam: H7 55 W bulb

#

Allow the component parts to cool

down before replacing the bulb.

Light and sight 131

#

Tail lamps

Changing the front bulbs (vehicles with halo‐

gen headlamps)

To remove: using a suitable object, turn the

two mounts 1 of the cover 2 in an anti-

clockwise direction as far as they will go.

Remove the unlocked cover 2 from the

wheel arch liner by pulling it upwards.

To fit: insert cover2 at bottom of the wheel

arch liner.

Using a suitable object, turn the two mounts

1 of the cover 2 in clockwise direction as

far as they will go.

Fitting/removing the cover in the front

wheel arch

Requirements:

#

R

The lighting system is switched off.

R

The appropriate front wheel is turned

inwards.

Replacing bulbs in the halogen headlamp

Requirements:

The lighting system is switched off.

Low beam/high beam

R

A H7 55 W light bulb is available.

R

1

2

The bonnet is open.

Turn signal light: PY 21 W bulb

Reversing light: W 16 W bulb

Turn signal lights:

R

A PWY 24 W light bulb is available.

R

The cover in the front wheel arch has been

removed.

132 Light and sight

#

Replacing the tail lamp bulbs

Requirements:

Insert the socket and turn it clockwise.

Press on the housing cover and turn it clock‐

wise.

Turn signal lights: install the cover in the

front wheel arch.

The lighting system is switched off.

The side trim panel in the boot is open.

Turn signal lights:

#

R

A PY 21 W light bulb is available.

Changing the rear bulbs (vehicles with halo‐

gen headlamps)

Reversing lights:

R

A W 16 W light bulb is available.

Opening and closing the side trim panels in

the boot

1

2

3

Low beam

High beam

Turn signal lights

#

Turn the relevant housing cover 1–3 anti-

clockwise and remove it.

Low beam / high beam: turn the socket

anti-clockwise and remove it.

Indicator: turn the socket anti-clockwise,

release it and remove it.

#

Pull the bulb out of the socket.

#

To open: release right-hand or left-hand side

trim panels 1 at the top and remove.

Insert the new bulb into the socket such that

the entire base of the bulb is resting on the

bottom of the socket.

#

To close: reinsert side trim panel 1.

Light and sight 133

Windscreen wipers and windscreen washer

system

Switching the windscreen wipers on/off

#

Indicator: push bulb 2 gently into the bulb

mount, turn it anti-clockwise and remove it

from the bulb mount.

#

Insert the new bulb into the bulb mount and

turn it clockwise.

Reversing light: pull bulb 3 out of the bulb

#

Push the upper and lower catches on the

plug together and remove the plug.

Turn wing screw 1 90° anti-clockwise and

remove the bulb holder.

mount.

#

Insert the new bulb into the bulb mount.

Insert the bulb mount again.

Turn wing screw 1 90° clockwise.

1

g Windscreen wipers off

2

Ä Intermittent wiping, normal

Insert the plug until the catch hooks engage

audibly.

3

Å Intermittent wiping, frequent

#

Close the side trim panel.

134 Light and sight

Moving the wiper arms into the replacement

position

4

° Continuous wiping, slow

¯ Continuous wiping, fast

5

#

Switch the ignition on and switch off again

immediately.

#

Turn the combination switch to the corre‐

sponding position 1 - 5.

Single wipe/washing: push the button on

#

Within around 15 seconds, press and hold

#

the î button on the combination switch

for approximately three seconds

(/ page 133).

The wiper arms will move into the replace‐

ment position.

the combination switch in the direction of

arrow 1.

R

í Single wipe

R

î Wiping with washer fluid

Removing the wiper blades

Replacing the windscreen wiper blades

#

Fold the wiper arms away from the wind‐

screen.

&

WARNING Risk of becoming trapped if

the windscreen wipers are switched on

while wiper blades are being replaced

#

Hold the wiper arm with one hand. With the

other hand, turn the wiper blade in the direc‐

tion of arrow 1 away from the wiper arm as

far as it will go.

If the windscreen wipers begin to move while

you are changing the wiper blades, you can

be trapped by the wiper arm.

#

Slide catch 2 in the direction of arrow 3

#

Always switch off the windscreen wip‐

until it engages in the removal position.

ers and ignition before changing the

wiper blades.

Remove the wiper blade from the wiper arm

in the direction of arrow 4.

Light and sight 135

#

Fitting the wiper blades

Maintenance display

Fold the wiper arms back onto the wind‐

screen.

#

Switch on the ignition.

Press the î button on the combination

switch (/ page 133).

The wiper arms will move into the original

position.

#

Switch the ignition off.

#

Insert the new wiper blade into the wiper

Remove protective film 1 from the mainte‐

nance display on the tip of the newly fitted

wiper blades.

arm in the direction of arrow 1.

#

Slide catch 2 in the direction of arrow 3

until it engages in the locking position.

Make sure that the wiper blade is seated cor‐

rectly.

When the colour of the maintenance display

changes from black to yellow, the wiper blades

should be replaced.

#

136 Light and sight

Folding the outside mirrors in/out

% The duration until the colour changes varies

&

WARNING Risk of accident due to mis‐

judgement of distance when using the

outside mirror

depending on the usage conditions.

Mirrors

The outside mirrors reflect objects on a

smaller scale. The objects in view are in fact

closer than they appear.

Operating the outside mirrors

#

&

WARNING Risk of accident due to

adjusting vehicle settings while the vehi‐

cle is in motion

Therefore, always look over your shoul‐

der in order to ensure that you are

aware of the actual distance between

you and the road users driving behind

you.

You could lose control of the vehicle in the

following situations in particular:

R

If you adjust the driver's seat, the head

restraints, the steering wheel or the mir‐

ror while the vehicle is in motion.

R

If you fasten your seat belt while the vehi‐

cle is in motion.

#

Briefly press button 1.

#

Before starting the engine: adjust the

Resetting the outside mirrors

driver's seat, the head restraints, the

steering wheel and the mirror and fas‐

ten your seat belt.

% If the battery has been disconnected or com‐

pletely discharged, the outside mirrors must

be reset. Only then will the automatic mirror

folding function work properly.

#

Briefly press button 1.

Light and sight 137

Adjusting the outside mirrors

The inside rearview mirror and the outside mir‐

ror on the driver's side will automatically go into

anti-dazzle mode if light from a headlamp hits

the sensor on the inside rearview mirror.

The electrolyte is hazardous to health and

causes irritation. It must not come into con‐

tact with your skin, eyes, respiratory organs

or clothing or be swallowed.

#

Press button 3 or 4 to select the outside

mirror to be adjusted.

#

Press button 2 to adjust the position of the

mirror glass.

#

System limits

If you come into contact with electro‐

lyte, observe the following:

The system will not go into anti-dazzle mode if:

Engaging the outside mirrors

R

Immediately rinse the electrolyte

R

the engine is switched off.

#

Vehicles without electrically folding out‐

from your skin with water and seek

medical attention.

R

side mirrors: manually move the outside

mirror into the correct position.

reverse gear is engaged.

R

the interior lighting is switched on.

R

If electrolyte comes into contact

#

Vehicles with electrically folding outside

with your eyes, immediately rinse

them thoroughly with clean water

and seek medical attention.

mirrors: press and hold button 1.

Front-passenger outside mirror parking posi‐

tion function

You will hear a click and the mirror will audi‐

bly click into place. The outside mirror will

now be set to the correct position.

R

If the electrolyte is swallowed,

The parking position makes parking easier.

immediately rinse your mouth out

thoroughly. Do not induce vomiting.

Seek medical attention immediately.

The front-passenger outside mirror will swivel

downwards in the direction of the rear wheel on

the front passenger's side when:

Automatic anti-dazzle mirrors function

R

Immediately change out of clothing

&

R

WARNING Risk of acid burns and poi‐

soning due to the anti-dazzle mirror elec‐

trolyte

the parking position is stored (/ page 138).

the front-passenger mirror is selected.

reverse gear is engaged.

which has been contaminated with

electrolyte.

R

If an allergic reaction occurs, seek

medical attention immediately.

Electrolyte may escape if the glass in an

automatic anti-dazzle mirror breaks.

138 Light and sight

Storing the parking position of the front-

passenger outside mirror using reverse gear

Calling up

The front-passenger outside mirror will move

back to its original position when:

#

Select the front-passenger outside mirror

using button 2.

R

you shift the transmission to another trans‐

mission position.

Storing

#

Engage reverse gear.

R

you are travelling at a speed greater than

15 km/h.

The front-passenger outside mirror will move

into the stored parking position.

R

you press the button for the outside mirror

on the driver's side.

Activating/deactivating the automatic mirror

folding function

Multimedia system:

4

5

Vehicle

î Vehicle settings

5

Auto. fold-in mirrors

#

Activate O or deactivate ª the function.

#

Select the front-passenger outside mirror

using button 2.

#

Engage reverse gear.

#

Move the front-passenger outside mirror into

the desired parking position using button 1.

Light and sight for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

Related Topics

Popular Owner Manuals

Latest Owner Manuals