2020 MERCEDES-BENZ METRIS brake

X
Start the engine.
X Switch on the turn signal in the direction in
which you are pulling away.
X Shift the transmission to position h or k.
The display shows the message Start
Park Assist? Yes: OK No: %.
X To cancel the process: press the % but-
ton on the steering wheel or drive off.
or
X To exit the parking space using active
parking assistance: press the a button
on the steering wheel.
The display shows the message Park
Assist Active: Accelerate and Brake
Obs. Surroundings.
X Let go of the steering wheel.
X Pull away, being ready to brake at all times.
Exit the parking space slowly and do not
drive faster than
6 mph (10 km/h). Other-
wise parking assistance is canceled and
Active Parking Assist is stopped.
Active Parking Assist brakes the vehicle to a
standstill when the vehicle approaches a
border of the parking space.
X While the vehicle is stationary, shift the
transmission to position h or k as
required or according to the message.
Active Parking Assist immediately steers in
the other direction. The display shows the
message Park Assist Active: Acceler‐
ate and Brake Obs. Surroundings.
i 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.
X Drive forwards and reverse as prompted by
the PARKTRONIC warning displays, several
times if necessary.
Once you have exited the parking space com-
pletely:
R The display shows the Park Assist Fin‐
ished message.
R A tone sounds.
R The steering wheel is moved to the straight-
ahead position
The parking assistance function of Active Park-
ing Assist is stopped. You will then have to
steer and merge into traffic on your own.
PARKTRONIC is still available. You can take over the steering before the vehi-
cle has exited the parking space completely.
This is useful, for example when you recognize
that it is already possible to pull out of the
parking space.
Canceling active parking assistance X
Stop the movement of the steering wheel or
steer yourself.
or X Press the f button and deactivate
PARKTRONIC
(Y page 158).
Parking assistance is canceled immediately
and Active Parking Assist is stopped. The
display shows the Park Assist Canceled
message.
Active parking assistance is canceled automat-
ically in the following cases:
R you apply the parking brake.
R parking using Active Parking Assist is no
longer possible.
R you are driving faster than

6 mph
(10 km/h).
R a wheel spins and ESP ®
intervenes or fails.
The ÷ warning lamp in the instrument
cluster then lights up.
R you unfasten your seat belt.
R you open a door or the tailgate/rear-end
door.
R you shift the transmission to position j.
A warning tone sounds, the parking symbol in
the display goes out and the Park Assist
Canceled message appears.
Once active Parking Assist has been canceled,
you must steer and brake again yourself.
If a system malfunction occurs, vehicles are
automatically braked down to a standstill. To
continue driving, you must depress the accel-
erator pedal again. Rear view camera
General notes On vehicles with a tailgate, the rear view cam-
era is next to the tailgate handle
(
Y page

267).
On vehicles with rear-end doors, the rear view
camera is in the top of the license plate mold-
ing ( Y page 267). Driving systems
163
Driving and parking Z

Information on the audio system control
knob can be found in the separate operating
instructions.
Symbol
= is highlighted. The distance
specifications now only apply to objects that
are at the same level as the ball coupling.
X Back up carefully, making sure that trailer
drawbar locating aid ; points approx-
imately in the direction of trailer draw-
bar :.
X Back up carefully until trailer drawbar :
reaches red guide line A.
The distance between trailer drawbar :
and ball coupling ? is now approximately
12 in (0.30 m
).
X Couple the trailer (Y page
168).Towing a trailer
Notes on trailer towing
Important safety notes G
WARNING
Installing an unsuitable ball coupling may
overload the trailer tow hitch and the rear
axle. This is particularly likely in the case of
longer or differently angled ball couplings.
Consequently, the driving characteristics
may be significantly impaired and the trailer
may detach. This presents the risk of an
accident or even fatal injuries!
Install only a ball coupling that adheres to
the permissible dimensions and is designed
for your intended purpose for towing a
trailer. Do not make any changes to the ball
coupling or the trailer tow hitch. G
WARNING
If you install a ball coupling other than the
one delivered with the vehicle, the trailer
tow hitch and the rear axle may be overloa-
ded. This applies especially if the ball cou-
pling in question is longer or angled differ-
ently. This could seriously impair the driving
characteristics and the trailer can come
loose. There is a risk of an accident. Only install the ball coupling delivered with
the vehicle or a ball coupling that is
designed to meet your trailer towing require-
ments. Do not modify the ball coupling or
the trailer tow hitch.
G
WARNING
If the ball coupling is not correctly installed
and secured, it could come loose while driv-
ing and endanger other road users. There is
a risk of accident and injury, possibly even
fatal injuries.
Install and secure the ball coupling as
described in the ball coupling manufactur-
er's installation instructions. Make sure that
the ball coupling is correctly installed and
secured before every journey. G
WARNING
When the vehicle/trailer combination begins
to lurch, you could lose control of it. The
vehicle/trailer combination could even roll-
over. There is a risk of an accident.
On no account should you attempt to
straighten up the vehicle/trailer combina-
tion by increasing the speed. Reduce vehicle
speed and do not countersteer. Apply the
brake as necessary.
You can attach carrier systems such as bicycle
racks or load-bearing implements on the ball
coupling. The maximum load-bearing capacity
of 165 lb (75 kg

) applies when using carrier
systems on the ball coupling.
Always observe the operating instructions pro-
vided by the manufacturers of the trailer cou-
pling and the ball coupling.
Couple and decouple the trailer carefully.
When backing up the towing vehicle, make
sure nobody is standing between the vehicle
and the trailer.
A trailer which is incorrectly coupled to the
towing vehicle could break away. A correctly
coupled trailer must be positioned horizontally
behind the towing vehicle. 168
Towing a trailer
Driving and parking

Ensure that the following weights are not
exceeded:
R the permissible noseweight
R the permissible trailer load
R the permissible rear axle load of the towing
vehicle
R the maximum permissible gross vehicle
weight of both the towing vehicle and the
trailer
R the maximum permissible gross weight of
vehicle/trailer combination
The applicable permissible values that may not
be exceeded can be found:
R in your vehicle documents
R on the type plates for the trailer tow hitch
R on the type plates for the trailer
R on the vehicle identification plate
(Y page
304)
Where the values differ, the lowest is valid.
You will find the values approved by the manu-
facturer on the vehicle identification plates
and those for the towing vehicle in the "Tech-
nical data" section (Y page 315).
Your vehicle behaves differently with a trailer
than without one.
The vehicle/trailer combination:
R is heavier
R is restricted in its acceleration and gradient-
climbing capability
R has an increased braking distance
R is more susceptible to strong crosswinds
R requires more sensitive steering
R has a larger turning radius
This may impair the handling characteristics.
When towing a trailer, always adjust your
speed to suit the road and weather conditions.
Drive carefully. Maintain a safe distance.
If you require any further explanation regard-
ing the information contained in the Operating
Instructions, please contact a Mercedes-Benz
Commercial Van Center.
General notes R
Observe the legally permitted maximum
speed for vehicle/trailer combinations in
the relevant country, state or Canadian
province. Before beginning the journey,
check the trailer's documents for the maxi-
mum permitted speed of your trailer. This reduces the risk of accidents.
R Install only an approved trailer coupling on
your vehicle. Only use a ball coupling for
your Metris trailer tow hitch if it has been
approved for your vehicle. More information
on the availability, mounting and installation
of the trailer electrics is available at any
qualified specialist workshop.
R The trailer coupling is one of the most
important vehicle parts with regard to road
safety. Observe the notes on operation, care
and maintenance of the trailer tow hitch
(see the manufacturer's operating instruc-
tions).
R The bumpers of your vehicle are not suitable
for installing detachable trailer couplings.
R Do not attach rented trailer tow hitches or
other detachable trailer tow hitches to the
bumper.
R Minimize the risk of damage to the ball cou-
pling. If you do not require the ball coupling,
remove it from the ball coupling recess.
You will find weight information under "Techni-
cal data"
(Y page 315).
The height of the ball neck changes according
to the load on the vehicle. If this is case, use a
trailer with a height-adjustable trailer drawbar.
Driving tips The maximum permissible speed for vehicle/
trailer combination depends on the type of
trailer. Before beginning the journey, check
the trailer's documents for the maximum per-
mitted speed of your trailer. Observe the
legally permitted maximum speed in the rele-
vant country, state or Canadian province.
When towing a trailer, your vehicle's handling
characteristics will be different in comparison
to when driving without a trailer and it will con-
sume more fuel.
On long and steep downhill gradients, select a
lower gear.
i This also applies if cruise control is activa-
ted.
This enables you to utilize the engine's braking
effect and you do not need to brake so heavily
to keep the correct speed. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly. If you need to brake additionally, to Towing a trailer
169
Driving and parking Z

not depress the brake pedal constantly, but
periodically.
Observe the notes on ESP
®
trailer stabilization
( Y page
69).
Driving tips If the trailer begins to swing from side to side:
X Do not accelerate.
X Do not counter-steer.
X Brake if necessary.
i You can reduce the risk of the trailer
swinging and rocking by retrofitting anti-roll
bars or trailer stability programs. Further
information is available at your authorized
Mercedes-Benz Van Dealer.
R Maintain a greater distance than you would
when driving without towing a trailer.
R Avoid sudden braking. Apply the brakes gen-
tly at first to allow the trailer brake to over-
run. Then, increase the brake force quickly.
R The figures for the gradient climbing capa-
bilities from a standstill refer to sea level.
When driving in mountainous areas, note
that the power output of the engine, and
with it its gradient climbing capability,
decrease with increasing altitude. Coupling up a trailer
Trailer coupled ready for use X
Make sure that the selector lever of the
automatic transmission is in position j.
X On vehicles with an automatic transmission,
ensure that the transmission is in position
j.
X Engage the vehicle's parking brake.
X Close all doors.
X Position the trailer horizontally behind your
vehicle.
X Couple the trailer.
X Establish all electrical and other connec-
tions to the trailer. When doing so, hook the
breakaway cable of the trailer into the eye-
let on the ball coupling.
X Remove the objects that are preventing the
trailer from rolling, e.g. wheel chocks.
X Release the trailer parking brake.
Observe the maximum permissible trailer
dimensions (width and length).
Most federal states and all Canadian provinces
require by law: R Safety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must
be fastened to the vehicle's trailer coupling,
not to the bumper or the axle.
Leave enough slack in the chains. This
allows you to drive round tight corners.
R A separate brake system for certain types of
trailer.
R A safety shut-off for braked trailers. Find out
the specific requirements according to the
applicable laws.
If the trailer becomes detached from the
towing vehicle, the safety shut-off applies
the trailer brakes. Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed
restrictions. Many states require a separate
functional braking system for your trailer once
a certain weight limit is exceeded. For reasons
of safety, it is recommended that all trailers
use a separate functional braking system.
Make sure your vehicle/trailer combination
complies with local laws. This not only means
where you live, but also anywhere you are driv-
ing to. Information on this can be obtained
from the police and local authorities. 170
Towing a trailer
Driving and parking

Observe the following when towing a trailer:
R Practice driving around bends, stopping and
backing up at a place where there is no traf-
fic. This enables you to gain experience and
get used to the new handling characteris-
tics.
R Before driving, check:
- that the trailer tow hitch and ball coupling
are secure
- that the safety switch for a braked trailer
is functioning properly
- that the safety chains are secure and not
damaged
- that the electrical connections are secure
- that the lights are working
- that the wheels are in good order and the
tire pressure is correct
R Adjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
R If the trailer is equipped with a separate
functional braking system, check before
each journey whether the brakes are func-
tioning correctly.
R Secure the load on the trailer according to
the applicable specifications and current
standards on securing loads
(Y page 244).
R When driving with a trailer, check at regular
intervals that the load is secured and that
the brakes and lights are working.
R Bear in mind that the handling will be less
stable when towing a trailer than when driv-
ing without one. Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly and has a
decreased gradient climbing capability and a
longer braking distance.
It is more susceptible to crosswinds and
requires cautious steering.
R If possible, do not brake suddenly, but
rather moderately at first so that the trailer
can activate its brakes. Then increase the
force on the brake pedal.
R If the automatic transmission repeatedly
shifts between gears when driving on
inclines, restrict the shift range. Select shift
range 4, 3, 2 or 1.
Driving in a low gear and at a low speed
reduces the risk of damaging the engine. R
When driving on a downhill gradient, shift to
a low gear and take advantage of the
engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
R If the coolant temperature increases dra-
matically while the air-conditioning system
is switched on, switch off the air-condition-
ing system.
Coolant heat can also be dissipated by
switching the airflow and the temperature of
the air conditioning to the maximum level.
Open the windows if necessary.
R When overtaking, pay particular attention to
the extended length of your vehicle/trailer
combination.
Due to the length of your vehicle/trailer
combination you need an additional dis-
tance before you can return to your original
lane. Uncoupling a trailer
G
WARNING
If you uncouple a trailer with the overrun
brake engaged, you could trap your hand
between the vehicle and the trailer drawbar.
There is a risk of injury.
Do not uncouple a trailer if the overrun
brake is engaged.
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the rebound-
ing of the overrun brake.
X Make sure that the selector lever of the
automatic transmission is in position P.
X Engage the vehicle's parking brake.
X Close all doors.
X Apply the parking brake of the trailer.
X In addition, secure the trailer against rolling
away with a wheel chock or similar object.
X Remove the trailer cable and safety chains
and decouple the trailer. Towing a trailer
171
Driving and parking Z

Permissible trailer loads and trailer
drawbar noseweights
Weight information !
For vehicles with a permissible gross vehi-
cle weight of 6614 lbs (3000 kg), the per-
missible gross combination mass is less
than the sum of the permissible gross vehi-
cle weight plus the permissible trailer load.
Exceeding the permissible gross combina-
tion mass can lead to damage to the drive-
train, to the transmission or to the trailer
hitch.
If either the vehicle or the trailer is fully
laden, the permitted gross vehicle weight or
the permitted trailer load values are reduced
accordingly. In this case, you may only parti-
ally load the trailer or the vehicle.
The gross trailer weight (GTW) is calculated by
adding the weight of the trailer to the weight
of the load and equipment. If the trailer is
installed with a separate functional braking
system, then the maximum gross trailer weight
is 5000 lbs (2268 kg). G
WARNING
If you tow a trailer without a separate func-
tional braking system and a gross trailer
weight (GTW) of more than

1635 lbs
(750 kg), then the vehicle brake system may
overheat. This increases the braking dis-
tance and the brake system may even fail.
There is an increased risk of accident and
injury, possibly even fatal.
Always use a trailer with a separate func-
tional braking system when towing a trailer
with a gross trailer weight (GTW) of more
than 1635 lbs (750 kg).
The maximum noseweight of the trailer draw-
bar on the ball coupling is 500 lbs (227 kg).
The actual noseweight may not exceed the
value given on the identification plates of the
trailer tow hitch or the trailer. If the values
vary, the lowest value always applies.
The gross combination weight rating (GCWR) is
calculated by adding the gross weight of the
trailer to the gross vehicle weight including a
driver's weight of approximately 150 lbs
(68 kg). The permissible Gross Combination Weight Rating is vehicle-specific and depends
on the equipment level.
When driving with a trailer, you should not
exceed the permitted Gross Combination
Weight Rating (GCWR).
The permissible values, which must not be
exceeded, can be found in your vehicle docu-
ments and on the trailer tow hitch type plates
for the trailer and the vehicle (
Y page

304).
The basic values approved by the manufac-
turer can also be found in the "Technical data"
section ( Y page 315). If the values vary, the
lowest value always applies.
Loading a trailer !
Utilize the maximum permissible nose-
weight as fully as possible. Do not allow the
weight to fall below the minimum permissi-
ble noseweight, otherwise the trailer may
come loose.
R The load must be distributed over the vehi-
cle and the trailer so as not to exceed either
the maximum permissible values for the
gross vehicle weight rating (GVWR) and
gross trailer weight (GTW), the gross combi-
nation weight rating (GCWR), nor the maxi-
mum permissible gross axle weight rating
(GAWR) and trailer drawbar noseweight rat-
ing of your vehicle.
R Add the drawbar noseweight on the ball
coupling (TWR) to the rear axle load. This
will prevent you from exceeding the permis-
sible gross axle weight (GAWR).
R Add the drawbar noseweight on the ball
coupling (TWR) to the vehicle payload. This
will ensure that you do not exceed the per-
missible gross vehicle weight rating (GVWR).
Checking the vehicle and trailer
weight R
Make sure the weights of the towing vehicle
and the trailer comply with the maximum
permissible values. Have the vehicle/trailer
combination weighed on a calibrated weigh-
bridge. The vehicle/trailer combination con-
sists of the towing vehicle including the
driver, passengers and load, as well as the
loaded trailer.
R Check the maximum permissible gross axle
weight rating of the front and rear axles
(GAWR), the gross trailer weight (GTW), the
gross combination weight rating (GCWR) 172
Towing a trailer
Driving and parking

Safety systems
Display messages
Possible causes/consequences and
M SolutionsABS, ESP Inopera‐
tive
+
ABS, BAS, hill start assist, and ESP
®
as well as its driving safety sys-
tems are unavailable due to a malfunction.
ATTENTION ASSIST is deactivated and other driving systems could
be automatically deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
This causes steerability and braking to be greatly impaired. The
braking distance can increase in emergency braking situations.
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Switch the engine off, wait briefly and start the engine again.
X Check if the display message has disappeared and ESP ®
is opera-
tional.
X If the display message continues to be displayed:
R Drive on with care.
R Visit a qualified specialist workshop immediately. ABS, ESP Curr.
Unavail.
+
ABS, BAS, hill start assist, and ESP
®
as well as its driving safety sys-
tems are temporarily unavailable.
ATTENTION ASSIST is deactivated and other driving systems could
be automatically deactivated.
For example, the on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
This causes steerability and braking to be greatly impaired. The
braking distance can increase in emergency braking situations.
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Drive on with care and on a suitable stretch of road make slight
steering movements at a speed above 12 mph (20 km/h ).
X Switch the engine off, wait briefly and start the engine again.
X Check if the display message has disappeared and ESP ®
is opera-
tional.
X If the display message continues to be displayed:
R Drive on with care.
R Visit a qualified specialist workshop immediately.196
Display messages (vehicles without steering wheel buttons)
On-board computer and displays

Display messages
Possible causes/consequences and
M SolutionsX
Visit a qualified specialist workshop immediately.
Further information on the Occupant Classification System (OCS)
can be found under "Occupant Classification System (OCS)"
(Y page
54). #
Check Brake Pad
Wear The brake pads/linings have reached their wear limit.
X Visit a qualified specialist workshop. $ (USA only)
J (Canada only)
Check Brake Fluid
Level There is insufficient brake fluid in the brake fluid reservoir.
G WARNING
Braking performance can be impaired.
There is a risk of an accident.
X Stop the vehicle immediately, paying attention to road and traffic
conditions. Do not continue driving under any circumstances.
X Secure the vehicle to prevent it from rolling away (Y page
138).
X Do not add brake fluid. Adding more will not remedy the malfunc-
tion.
X Consult a qualified specialist workshop. EBD, ABS, ESP Inop‐
erative
+ EBD is unavailable due to a malfunction. ABS, BAS, hill start assist
and ESP
®
as well as its driving safety systems, for example, are
therefore also unavailable.
ATTENTION ASSIST is deactivated and other driving systems could
be automatically deactivated.
G WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock prematurely
if you brake hard, for example.
This causes steerability and braking to be greatly impaired. The
braking distance can increase in emergency braking situations.
If ESP ®
is not operational, ESP ®
will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
X Switch the engine off, wait briefly and start the engine again.
X Check if the display message has disappeared and ESP ®
is opera-
tional.
X If the display message continues to be displayed:
R Drive on with care.
R Visit a qualified specialist workshop immediately. Display messages (vehicles without steering wheel buttons)
199On-board computer and displays Z