2020 MERCEDES-BENZ METRIS lane assist

Important safety notes .................. 194
Introduction
................................... 194
Key ................................................ 209
Lamps ............................................ 202
Setting the language ...................... 179
Tires ............................................... 207
Vehicle ........................................... 208
Distance recorder
Displaying (vehicle with steering
wheel buttons) ............................... 183
Displaying (vehicle without steer-
ing wheel buttons) ......................... 177
Setting the display unit (vehicle
without steering wheel buttons) .... 180
Distance recorder
see Trip odometer
Distance warning (warning lamp) .... 235
Distance warning function ............... 149
Door
Changing bulbs (ambient lamp) ..... 104
Display messages (vehicle with
steering wheel buttons) ................. 226
Display messages (vehicle with-
out steering wheel buttons) ........... 208
Indicator lamp ................................ 237
Doors
Central locking/unlocking
(SmartKey) ....................................... 71
Control panel ................................... 44
Emergency locking ........................... 73
Emergency unlocking ....................... 73
Downhill gradients ............................ 142
Drinking and driving ......................... 140
Drinks holder
see Bottle holder
Drinks holder
see Cup holder
Drive program
Automatic transmission ................. 133
Display (DIRECT SELECT lever) ...... 132
Driver's door and front-passenger
door ...................................................... 76
Driver's seat
see Seats
Driving abroad
Fuel ................................................ 141
Low-beam headlamps .................... 141 Mercedes-Benz Service ................. 141
Driving off-road
see Off-road driving
Driving on flooded roads ..................
144
Driving safety systems
ABS (Anti-lock Braking System) ....... 67
BAS (Brake Assist System) .............. 67
EBD (electronic brake force dis-
tribution) .......................................... 68
ESP ®
(Electronic Stability Pro-
gram) ............................................... 68
Important safety information ........... 66
Overview .......................................... 66
Driving system
COLLISION PREVENTION ASSIST .. 149
Display messages (vehicle with-
out steering wheel buttons) ........... 206
Driving systems
Active Parking Assist ..................... 159
ATTENTION ASSIST ........................ 155
Blind Spot Assist ............................ 151
Cruise control ................................ 146
Display messages (vehicle with
steering wheel buttons) ................. 221
Lane Keeping Assist ...................... 153
PARKTRONIC ................................. 156
Rear view camera .......................... 163
Driving tips
Automatic transmission ................. 134
Brakes ........................................... 142
Break-in period .............................. 126
Checking brake lining thickness .... 143
Downhill gradient ........................... 142
Drinking and driving ....................... 140
Driving abroad ............................... 141
Driving in mountainous areas ........ 146
Driving in winter ............................. 144
Driving on flooded roads ................ 144
Driving on wet roads ...................... 143
Exhaust check ............................... 141
Fuel ................................................ 140
General notes ................................ 140
Hydroplaning ................................. 143
Icy road surfaces ........................... 144
Important safety notes .................. 126
Limited braking efficiency on sal-
ted roads ....................................... 142
New brake disks ............................ 143 10
Index

Jacking points ................................ 298
Scope of tire-changing tools
.......... 270
Storage location ............................ 270
Stowage compartment in the
rear ................................................ 271
Stowage space in the cargo com-
partment ........................................ 272
Using ............................................. 298
Jump starting (engine) ...................... 272
Jump-start (engine)
see Jump starting (engine) K
Key Display messages (vehicle with
steering wheel buttons)

................. 227
Display messages (vehicle with-
out steering wheel buttons) ........... 209
Position in the ignition lock ............ 127
Kickdown ........................................... 135L
Lamps Display messages (vehicle with-
out steering wheel buttons) ...........

202
see Warning and indicator lamps
Lane detection (automatic)
see Lane Keeping Assist
Lane Keeping Assist
Activating/deactivating ................. 154
Display message ............................ 222
Function/information .................... 153
Important safety notes .................. 154
Setting sensitivity (on-board
computer) ...................................... 191
Setting the sensitivity .................... 155
Language
Display (vehicle with steering
wheel buttons) ............................... 192
Display (vehicle without steering
wheel buttons) ............................... 179
Lashing points and tie downs
Permissible tensile load ................. 313
Lashing strap
Important safety notes .................. 246
Tensioning strap ............................ 247 LATCH-type (ISOFIX) child seat
anchors
................................................

63
License plate lamp
Changing bulbs .............................. 105
License plate lamps
Display messages (vehicle with
steering wheel buttons) ................. 217
Display messages (vehicle with-
out steering wheel buttons) ........... 203
Light sensor
Display messages (vehicle with
steering wheel buttons) ................. 216
Display messages (vehicle with-
out steering wheel buttons) ........... 202
Lighting
see Lights
Lights
Activating/deactivating the inte-
rior lighting delayed switch-off ....... 193
Automatic headlamp mode ............ 100
Changing bulbs (halogen head-
lamps) ............................................ 105
Changing bulbs (interior lights) ...... 103
Display messages (vehicle with
steering wheel buttons) ................. 216
Driving abroad ............................... 141
Fog lamps ...................................... 100
Hazard warning lamps ................... 101
High beam flasher .......................... 101
High-beam headlamps ................... 101
Important safety notes .................... 99
Light switch ..................................... 99
Low-beam headlamps .................... 100
Parking lamps .................................. 99
Rear fog lamp ................................ 100
Replacing bulbs (halogen head-
lamps) ............................................ 105
Standing lamps ................................ 99
Switching the daytime running
lamps on/off (switch) .................... 100
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 193
Switching the surround lighting
on/off (on-board computer) .......... 193
Turn signals ................................... 101
Limited Warranty ................................ 27
Load distribution ............................... 243 14
Index

Cockpit
Function Page
:
Steering wheel paddle shift-
ers
135
;
• Cup holder 239
• Ashtray 240
=
Combination switch 101
?
PARKTRONIC warning indi-
cators
156
A
Horn
B
• Instrument cluster (vehi-
cle without steering wheel
buttons)
38
• Instrument cluster (vehi-
cle with steering wheel but-
tons)
40
C
DIRECT SELECT lever 131
D
Center console control
panel
43
E
Inside rearview mirror 96
F
• Overhead control panel 44
• Interior lamp 102
G
Glove box 238 Function Page
H
Cup holder 239
I
• 12 V socket 241
• Cigarette lighter 240
J
Ignition lock 127
K
Adjusts the steering wheel 95
L
Diagnostics connection 31
Opens the hood 251
M
Applies the parking brake 138
N
Door control panel 44
O
Releases the parking brake 138
P
Light switch 99
Q
• Coin/card holder
• Driving system control
panel
Ç Deactivates/activates
Lane Keeping Assist
153
c Deactivates/activates
PARKTRONIC
156
R
Cruise control lever 147Cockpit
37At a glance

Child-proof lock for sliding door
Sliding door (example: left side of the vehicle)
: Child safety bolt
2 Sliding door released
3 Sliding door secured – then make sure
that the child-proof locks are working
properly.
You can secure each sliding door individually
with the child-proof locks on the sliding doors.
A secured sliding door cannot be opened from
inside the vehicle. When the vehicle is
unlocked, the sliding door can be opened from
the outside. If the electric sliding door is
secured, only the sliding door rear controls are
deactivated. If the electric sliding door is
unlocked, you can open the electric sliding
door using the corresponding Å or Æ
sliding door button in the center console
(Y page
79). Pets in the vehicle
G
WARNING
If you leave animals unsupervised or unse-
cured in the vehicle, they may press buttons
or switches, for instance.
In this way, animals may:
R activate vehicle equipment and become
trapped, for example
R switch systems on or off and thereby
endanger other road users
Furthermore, unsecured animals may be
flung around inside the vehicle in the event
of an accident or abrupt steering or braking maneuver, and thereby injure vehicle occu-
pants. There is a risk of accident and injury.
Never leave animals unattended in the vehi-
cle.
Always secure animals properly when driv-
ing, for instance with a suitable pet carrier. Driving safety systems
Overview
In this section, you will find information about
the following driving safety systems:
R EBD ( Electronic Brake Force Distribution)
R ABS ( Anti-lock Braking System)
R BAS ( Brake A ssist System)
R ESP ®
(Electronic Stability Program) Important safety notes
If you fail to adapt your driving style or if you
are inattentive, the driving safety systems can
neither reduce the risk of accident nor over-
ride the laws of physics. Driving safety sys-
tems are merely aids designed to assist driv-
ing. You are responsible for the distance to the
vehicle in front, for vehicle speed, braking in
good time and for staying in your lane. Always
adapt your driving style to the prevailing road
and weather conditions and maintain a suffi-
cient, safe distance from other road users.
Drive carefully.
Please note that the driving safety systems
described only work optimally when the follow-
ing conditions are fulfilled:
R there is adequate contact between the tires
and the road surface.
R you use winter tires

(M+S tires) with snow
chains if necessary, when the road condi-
tions are wintry.
R the speed information determined by the
vehicle is within the legally prescribed dis-
play accuracy.
Pay particular attention to the information
regarding tires, tire tread and winter operation
under "Wheels and tires" (Y page 278). 66
Driving safety systems
Safety

to stabilize the vehicle/trailer combination in
this situation.
ESP
®
trailer stabilization is activated above
speeds of about
40 mph (65 km/h).
If ESP ®
is switched off or deactivated because
of a malfunction, the trailer stabilization sys-
tem will not function.
Crosswind Assist Observe the important safety guidelines for
the driving safety system (Y page

66).
Strong crosswind gusts can impair the road-
holding of your vehicle when driving straight
ahead. The Crosswind Assist function integra-
ted in ESP ®
reduces these impairments.
Depending on the direction and intensity of
the side wind, Crosswind Assist intervenes
automatically. ESP ®
intervenes with stabilizing
braking to assist you in keeping the vehicle in
the lane. When Crosswind Assist intervenes,
the display shows the traffic sign for strong
side winds and the Crosswind Assist mes-
sage.
Crosswind Assist is activated automatically
above a vehicle speed of approx. 50 mph
(80 km/h) when the vehicle is driving straight
ahead or cornering gently.
Crosswind Assist does not react in the follow-
ing situations:
R in the event of severe jolts and vibrations,
e.g. when driving over uneven surfaces or
potholes
R when road adhesion is reduced, e.g. on
snow or ice or when hydroplaning
Crosswind Assist does not work if ESP ®
is
deactivated or disabled because of a malfunc-
tion. Theft deterrent locking system
Immobilizer
X To activate: remove the key from the igni-
tion lock.
X To deactivate: turn the key to position 2 in
the ignition lock.
The immobilizer prevents your vehicle from
being started without the correct key.
Always take the key with you and lock the
vehicle when leaving the vehicle. If you leave the key in the vehicle, anyone can start the
engine.
i The immobilizer is always deactivated
when you start the engine. ATA (Anti-Theft Alarm system)
X
To arm: lock the vehicle with the key.
Indicator lamp : in the overhead control
panel flashes.
X To disarm: unlock the vehicle with the key.
or
X Insert the key into the ignition lock.
If the alarm system is armed, a visual and
audible alarm is triggered when the following
are opened:
R a door
R the vehicle with the mechanical key
R the tailgate/rear door
R the hood
X To stop the alarm: press the % or &
button on the key.
or X Insert the key into the ignition lock.
The alarm stops.
The alarm is not switched off, even if you close
the open door that triggered it, for example. 70
Theft deterrent locking system
Safety

may also cause the system to display a warn-
ing.
If you fail to adapt your driving style, the dis-
tance warning function can neither reduce the
risk of an accident nor override the laws of
physics. The distance warning function cannot
take into account road, weather or traffic con-
ditions. The distance warning function is only
an aid. You are responsible for the distance to
the vehicle in front, for vehicle speed, braking
in good time and for staying in your lane.
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to collisions
at slow speeds where there is no visible dam-
age to the front of the vehicle.
If you change wheel size, make sure they cor-
respond to the correct wheel size category
(Y page
278). If the category is changed with-
out recoding the control units in the vehicle,
the functioning of the distance warning feature
may be impaired. COLLISION PREVENTION
ASSIST may then detect a malfunction and
switch itself off.
Operation
X To activate/deactivate: activate or deacti-
vate the distance warning function in the on-
board computer

(Y page 190).
If the distance warning function of COLLI-
SION PREVENTION ASSIST is activated, the
display shows the Ä symbol:
R in the header
R in the Status Overview of the Assist.
menu (Y page 189)
At speeds up to approx 20 mph (30 km/h)
the display in vehicles with Active Parking
Assist first shows the í status indicator.
Only from a speed of about 20 mph
(30 km/h) does the display show the
Äsymbol instead of the í status indica-
tor.
The distance warning function can help you to
minimize the risk of a front-end collision with a
vehicle ahead or reduce the effects of such a
collision. With the help of the radar sensor sys-
tem, the distance warning function can detect
obstacles that are in the path of your vehicle
for an extended period of time. If the distance
warning function detects that there is a risk of
a collision, you will be warned visually and,
where necessary, acoustically. Without your intervention, the distance warning function
cannot prevent a collision.
The distance warning function issues a warn-
ing at speeds:
R from about

4 mph (7 km/h) if you approach
a vehicle traveling in front or a stationary
vehicle too quickly. The · warning lamp
in the instrument cluster then lights up and
an intermittent warning tone also sounds.
At speeds up to about 45 mph (70 km/h),
the system also detects stationary obsta-
cles, for example stopped or parked vehi-
cles.
X Brake immediately until the distance from
the obstacle increases and the risk of a
front-end collision passes.
or X Take evasive action, provided it is safe to do
so.
Adaptive Brake Assist General notes
Adaptive Brake Assist evaluates the traffic sit-
uation with the help of the radar sensor sys-
tem and can detect obstacles which have been
in your vehicle's path for an extended period
of time. From speeds above 4 mph (7 km/h

),
Adaptive Brake Assist aids you in braking dur-
ing hazardous situations.
Up to a speed of approximately 125 mph
(200 km/h), Adaptive Brake Assist is capable
of reacting to moving obstacles that have
already been detected as such at least once
over the period of observation.
Important safety notes G
WARNING
Adaptive Brake Assist does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R to stationary obstacles
R when cornering
As a result, the Adaptive Brake Assist may
not intervene in all critical conditions. There
is a risk of an accident. 150
Driving systems
Driving and parking

Always pay careful attention to the traffic
situation and be ready to brake. G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
R intervene unnecessarily
R not intervene
There is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake. Terminate
the intervention in a non-critical driving sit-
uation.
In particular, the detection of obstacles can be
impaired in the case of:
R dirt on the sensors or anything else covering
the sensors
R snow or heavy rain
R interference from other radar sources
R strong radar reflections, for example, in
parking garages
R a narrow vehicle traveling in front, e.g. a
motorbike
R a vehicle traveling in front on a different line
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause Adaptive Brake Assist to inter-
vene.
If you fail to adapt your driving style, Adaptive
Brake Assist can neither reduce the risk of
accident nor override the laws of physics.
Adaptive Brake Assist cannot take into
account road, weather or traffic conditions.
Adaptive Brake Assist is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, braking in good time
and for staying in your lane.
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to collisions
at slow speeds where there is no visible dam-
age to the front of the vehicle.
If you change wheel size, make sure they cor-
respond to the correct wheel size category
(Y page
278). If the category is changed with- out recoding the control units in the vehicle,
the functioning of Adaptive Brake Assist may
be impaired. COLLISION PREVENTION ASSIST
may then detect a malfunction and switch
itself off.
If Adaptive Brake Assist is not available due to
a malfunction in the radar sensor system, the
brake system remains available with full brake
boosting effect and BAS.
Operation With the help of the radar sensor system,
Adaptive Brake Assist can detect obstacles
that have been in the path of your vehicle for
an extended period of time. Adaptive Brake
Assist does not react to stationary obstacles.
If Adaptive Brake Assist detects a risk of colli-
sion with a vehicle traveling in front or with a
stationary obstacle, the system calculates the
braking force necessary to avoid this collision.
If you apply the brakes forcefully, Adaptive
Brake Assist will automatically increase the
braking force to a level suitable for the traffic
conditions.
X Brake until the distance to the obstacle
increases and the risk of a collision passes.
ABS prevents the wheels from locking.
The brakes function as usual again if:
R you release the brake pedal
R there is no longer any danger of a collision
R no obstacle is detected in front of your vehi-
cle
Braking assistance is then ended. Blind Spot Assist
General notes Blind Spot Assist monitors the areas on either
side of the vehicle that are not visible to the
driver with two lateral, rear-facing radar sen-
sors in the bumper. It supports you from
speeds of approximately

20 mph (30 km/h). A
warning display in the exterior mirrors draws
your attention to vehicles detected in the
monitored area. If you then switch on the cor-
responding turn signal to change lane, you will
also receive an optical and audible collision
warning. Driving systems
151
Driving and parking Z

Important safety notes
G
WARNING
Blind Spot Assist does not react to:
R vehicles overtaken too closely on the side,
placing them in the blind spot area
R vehicles which approach with a large
speed differential and overtake your vehi-
cle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk
of an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
In particular, the detection of obstacles can be
impaired in the case of:
R dirt on the sensors or anything else covering
the sensors
R fog, heavy rain or snow
R narrow vehicles, e.g. motorcycles or bicy-
cles
R very wide lanes
R narrow lanes
R vehicles not driving in the middle of their
lane
R barriers or other road boundaries
Vehicles in the monitoring range are then not
indicated.
i USA only:
This device has been approved by the FCC
as a "Vehicular Radar System". The radar
sensor is intended for use in an automotive
radar system only. Removal, tampering, or
altering of the device will void any warran-
ties, and is not permitted by the FCC. Do
not tamper with, alter, or use in any non-
approved way.
Any unauthorized modification to this device
could void the user’s authority to operate
the equipment. Monitoring range of the sensors
Blind Spot Assist monitors the area shown in
the diagram up to
118 in (3 m) behind and
directly next to your vehicle.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may be
the case if the vehicles are driving on the inner
side of their lane.
Due to the nature of the system:
R warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
R warnings may be interrupted when driving
alongside long vehicles, e.g. trucks, for a
prolonged time.
The two sensors for Blind Spot Assist are inte-
grated into the sides of the rear bumper. Make
sure that the bumper is free of dirt, ice or
slush in the vicinity of the sensors. The radar
sensors must not be covered, for example by
rear-mounted cycle racks or overhanging
loads. Following a severe impact or in the
event of damage to the bumper, have the func-
tion of the radar sensors checked at a quali-
fied specialist workshop. Blind Spot Assist
may otherwise not work properly. 152
Driving systems
Driving and parking