2017 MERCEDES-BENZ METRIS tow bar

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 needto brake additionally, to not depress the brake
pedal constantly, but periodically.
Observe the notes on ESP
®trailer stabilization
(Ypage 67).
Driving tips
If the trailer begins to swing from side to side:
XDo not accelerate.
XDo not counter-steer.
XBrake if necessary.
iYou can reduce the risk of the trailer swing-
ing and rocking by retrofitting anti-roll bars or trailer stability programs. Further information
is available at your authorized Mercedes-Benz
Van Dealer.
RMaintain a greater distance than you would
when driving without towing a trailer.
RAvoid sudden braking. Apply the brakes gen-
tly at first to allow the trailer brake to overrun.
Then, increase the brake force quickly.
RThe figures for the gradient climbing capabil-
ities 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
XMake sure that the selector lever of the auto-
matic transmission is in position P.
XOn vehicles with an automatic transmission,
ensure that the transmission is in position P.
XEngage the vehicle's parking brake.
XClose all doors.
XPosition the trailer horizontally behind your
vehicle.
iThe height of the ball neck changes accord-
ing to the load on the vehicle. In this case, use
a trailer with a height-adjustable trailer draw-
bar.
XCouple the trailer.
XEstablish all electrical and other connections to the trailer. When doing so, hook the break-
away cable of the trailer into the eyelet on the
ball coupling.
XRemove the objects that are preventing the
trailer from rolling, e.g. wheel chocks.
XRelease the trailer parking brake.
iThe subharness of the vehicle has a cable
connection to the brake lamp indicator lamp.
Observe the maximum permissible trailer
dimensions (width and length).
Most federal states and all Canadian provinces
require by law:
Rsafety chains between the towing vehicle and the trailer. The chains should be cross-wound
under the trailer drawbar. They must be fas-
Towing a trailer165
Driving and parking
Z

Uncoupling a trailer
GWARNING
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 rebounding of the overrun
brake.
XMake sure that the selector lever of the auto-
matic transmission is in position P.
XEngage the vehicle's parking brake.
XClose all doors.
XApply the parking brake of the trailer.
XIn addition, secure the trailer against rolling
away with a wheel chock or similar object.
XRemove the trailer cable and safety chains
and decouple the trailer.
Permissible trailer loads and trailer
drawbar noseweights
Weight information
!For vehicles with a permissible gross vehicle
weight of 6724 lbs (3050 kg), the permissible gross combination weight is less than the sum
of the permissible gross vehicle weight plus
the permissible trailer load. Exceeding the
permitted gross combination weight could
damage the powertrain, transmission or
trailer tow hitch.
If either the vehicle or the trailer is fully laden,
the permitted gross vehicle weight or the per- mitted trailer load values are reduced accord-
ingly. In this case, you may only partially 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).
GWARNING
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 distance 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 functional
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 drawbar
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 Rat-
ing is vehicle-specific and depends on the equip-
ment 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 (
Ypage 303). The
basic values approved by the manufacturer can
also be found in the "Technical data" section
(
Ypage 313). 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 permissible
noseweight, otherwise the trailer may come
loose.
RThe load must be distributed over the vehicle
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 combination weight
Towing a trailer167
Driving and parking
Z

rating (GCWR), nor the maximum permissible
gross axle weight rating (GAWR) and trailer
drawbar noseweight rating of your vehicle.
RAdd the drawbar noseweight on the ball cou-
pling (TWR) to the rear axle load. This will pre-vent you from exceeding the permissible
gross axle weight (GAWR).
RAdd the drawbar noseweight on the ball cou-
pling (TWR) to the vehicle payload. This will
ensure that you do not exceed the permissi-
ble gross vehicle weight rating (GVWR).
Checking the vehicle and trailer weight
RMake sure the weights of the towing vehicle
and the trailer comply with the maximum per-missible values. Have the vehicle/trailer com-
bination 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.
RCheck 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) and
the noseweight of the trailer drawbar (TWR).
Trailer power supply
!
Incorrect wiring of the connector plug could,
under certain circumstances, cause malfunc-
tions in the vehicle's other electronic sys-
tems. We therefore recommend having the
connector plug wired at a qualified specialist
workshop.
!You can connect accessories with a maxi-
mum power consumption of 240 W to the
permanent power supply.
You must not charge a trailer battery using the
power supply.
Your vehicle may be equipped with various elec-
trical installations for trailer towing. Depending
on your trailer, you may need an adapter to con-
nect the electrical system of the trailer with that
of the vehicle.
The trailer socket of your vehicle is equipped at
the factory with a permanent power supply.
The permanent power supply is on the trailer
socket pin assignment 4.
Note that the permanent power supply of the
trailer is not switched off when the on-board voltage is low. This can completely discharge
the starter battery of your vehicle.
Further information on the electrical equipment
currently installed on your vehicle and on instal-
ling trailer electrics can be obtained at any quali-
fied specialist workshop.
168Towing a trailer
Driving and parking

Change of direction announced without
lane recommendation
:Road to which the change of direction leads
;Distance to the change of direction and dis-
tance graphic
=Change-of-direction symbol
If a change of direction is required, a dynamic
bar is shown as a distance graphic above the
distance to the change of direction ;. The bar
shortens towards the top of the display as you
approach the point of the announced change of
direction. The change of direction starts once
the distance graphic no longer shows a bar.
Other navigation system status indica-
tors
RNew Route...or Calculating Route
A new route is calculated.
ROff Mapor a compass needle pointing in the
direction of the destination
The vehicle position is outside the area of the
digital map (off-map position) or the road is
not recognized, e.g. unpaved roads (off-road).
RNo Route
No route could be calculated to the selected
destination.
RO
You have reached the destination or an inter-
mediate destination.
Audio menu
Selecting a radio station
:Waveband with station preset
;Station
Station ;is displayed with the station fre-
quency or station name. The station preset is
only displayed along with waveband :if the
station has been stored.
Using the steering wheel buttons
XSwitch on the audio system and select the
radio function (see separate operating
instructions).
XPress =or; to select the Audiomenu.
The display shows currently selected sta-
tion;.
XTo select a stored station: press9
or : briefly.
XTo select a station from the station list:
press and hold 9or:.
If a station list is not received:
XTo select a station using the station
search: press and hold 9or:.
On-board computer (vehicles with steering wheel buttons)181
On-board computer and displays
Z

XTo enter the passkey:enter an easy to
remember, four-digit number using the x
to s number keys.
XTo confirm the entry: select OK.
The Bluetooth®device is authorized.
XSelect Bluetooth®device name MB Blue-
tooth on the device.
XEnter the four-digit number selected previ-
ously on the Bluetooth®device, and confirm.
XConfirm possible prompts using the Blue-
tooth®device.
The Authorization successful.message
is shown in the display. You will see the Blue-
tooth
®name of the Bluetooth®device in the
display/selection window.
iWhen the Authorization failed.mes-
sage is displayed, you may have exceeded the
prescribed time period. Repeat the proce-
dure.
If the pairing process was successful, the
Bluetooth
®device is automatically connected
to the multimedia system.
Unpairing a Bluetooth®device
XPress the %button.
or
XSelect the Bluetooth®audio function.
XPress the :button repeatedly until the
menu bar is selected.
XSelect Telephone/BT Audio.
XBluetooth telephones/Bluetoothdevice list.
The display shows all paired Bluetooth®devi-
ces. The current Bluetooth®device is identi-
fied by the #dot.
XSelect the Bluetooth®device to be unpaired.
XSelect the list symbol next to the entry using
the ; button.
XSelect De-authorize.
A prompt appears in the display asking
whether the Bluetooth
®device should be de-
authorized.
XTo unpair: select Yes.
The Bluetooth®device is unpaired and
deleted from the device list.
XTo cancel the unpairing process : selectNo.
The Bluetooth®device is not unpaired from
the multimedia system. You have canceled
the process.
Ending a Bluetooth®connection
iIf you end the Bluetooth®connection, the
Bluetooth®device is not deleted from the
multimedia system memory.
A Bluetooth
®connection can be ended in the
following ways:
Rdeactivate the Bluetooth®function of the
multimedia system.
Rdeactivate the Bluetooth®function of your
Bluetooth®device.
Rswitch off the multimedia system.
Rswitch off the Bluetooth®device.
Media mode
Memory card audio playback
XTo insert the SD memory card: insert the
SD memory card into the SD slot with the
contacts at the front and facing downwards.
XPress the Õbutton repeatedly, until the
display in the menu bar shows SD.
Playback starts.
iIf the multimedia system cannot find any
readable files on the SD memory card, the
display shows No Playable Files
.
XTo remove the SD memory card: press the
SD memory card.
The multimedia system ejects the SD memory
card.
USB device audio playback
The connection for USB devices is located in the
left-hand stowage compartment, next to the
multimedia system.
Audio 15235
Multimedia systems in brief
Z

XConnect the negative terminal clamp of the
jumper cable to negative terminal;of the
donor veh icle's battery, and then to earth
contact ?of your own veh icle.
XInsert the key into the ignition lock and start
the engine.
You can now switch electrical consumers
back on except the lighting system.
XBefore disconnecting the jumper cables, let
the engine run for several minutes.
XDisconnect the negative terminal of the
jumper cable from earth contact ?and then
from negative terminal ;of the donor veh i-
cle's battery.
XDisconnect the positive terminal clamp of the
jumper cable from positive terminal Aon the
jump-starting connection point, and then
from positive terminal =of the donor veh i-
cle's battery.
Contact protection cover :isautomatically
returned forwards to its original position by
the spring force and the jump-starting con-
nection pointis closed.
XPosition the cover on positive terminal =of
the donor veh icle's battery.
You can now switch on the lighting system.
XHave the battery checked at a qualified spe-
cialist workshop.
Tow-starting and towing away
Important safety notes
GWAR NING
Functions relevant to safety are restricted or
no longer availab leif:
Rthe engine isnot running.
Rthe brake system or the power steering is
malfunctioning.
Rthere isa malfunction inthe voltage supply
or the veh icle's electrical system.
If your veh icle is bein g towed, much more
force may benecessary to steer or brake.
There isa risk of an acc ident.
In such cases, use a tow bar. Before to wing,
make sure that the steering moves freely.
GWARNING
You can no longer steer the vehicle ifthe
steering wheel lock has been engaged. There
is a risk of an accident.
Alwa ysswit ch off the ignition when to wingthe
vehicle with a tow cable or a tow bar.
GWARNING
When to wingor tow-starting another vehicle
and its weight isgreater than the permissible
gross weight of your vehicle, the:
Rthe to wingeye could detach itself
Rthe vehicle /trailer combination could roll-
over.
There is a risk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the per- missible gross weight of your vehicle.
In formation on the gross vehicle weight can be
found on the vehicle identification plate
(
Ypage 303).
!Secure the tow rope or tow bar to the to wing
eye or trailer tow hitch only. Otherwise, the
vehicle could become damaged.
!Do not use the to wingeye for recovery, this
could damage the vehicle. If indoubt, recover
the vehicle with a crane.
!Drive slowly and smoothly when to wing.
Excessive tractive power could otherwise
damage the vehicles.
!Shift the automatic transmission to Nand
do not open the driver's or front passenger's
door during to wing. The automatic transmis-
sion may otherwise shift to position P,whic h
could damage the transmission.
!The vehicle can be towed a maximum of
30 miles (50km ).The to wingspeed of 30 mph
(50 km/h) must not be exceeded.
If the vehicle has to betowed more than
30 mile
s(50k
m) ,the entire vehicl emust be
raised and transported.
When towing away, you must observe the legal
requirements for the country in which you are
currently driving.
It is better to have the vehicle transported than
to have it towed.
274Tow-starting and towing away
Breakdown assistance

Towing the vehicle with both axles on
the ground
Important safety notes
GWARNING
You can no longer steer the vehicle if the
steering wheel lock has been engaged. There
is a risk of an accident.
Always switch off the ignition when towing the
vehicle with a tow cable or a tow bar.
!Do not exceed the towing speed of 30 mph
(50 km/h). You could otherwise damage the
transmission.
Please observe the important safety notes
before towing your vehicle (
Ypage 274).
Towing vehicles with automatic trans-
mission
XTurn the key to position 2in the ignition lock.
XDepress the brake pedal and keep it
depressed.
XShift the automatic transmission to position
N.
XLeave the key in position 2in the ignition lock.
XSwitch on the hazard warning lamps
(Ypage 96).
XRelease the parking brake.
XRelease the brake pedal.
XDo not exceed the towing speed of 30 mph
(50 km/h).
Recovering a vehicle that is stuck
!
When recovering a vehicle that has become
stuck, pull it as smoothly and evenly as pos-
sible. Excessive tractive power could damage
the vehicles.
If the drive wheels get trapped on loose or
muddy ground, recover the vehicle with the
utmost care. This is especially the case if the
vehicle is laden.
Never attempt to recover a vehicle with a trailer
attached.
Pull out the vehicle backwards, if possible, using
the tracks it made when it became stuck.
Transporting the vehicle
!
You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
The towing eye or trailer tow hitch can be used
to pull the vehicle onto a trailer or transporter if
you wish to transport it.
XTurn the key to position 2in the ignition lock.
XShift the transmission to position N.
XRelease the parking brake.
If the vehicle is loaded:
XShift the transmission to position P.
XTurn the key to position 0in the ignition lock
and remove it.
XMake sure the parking brake is applied.
XLash down the vehicle.
Tow-starting (emergency engine
starting)
General notes
!Vehicles with automatic transmission must
not be tow-started. You could otherwise dam-
age the automatic transmission.
You can find information on jump-starting under
"Jump-starting“ (
Ypage 272).
Electrical fuses
The fuse allocation chart and important safety
information on the fuses can be found in the
"Fuse allocation chart" supplement.
276Electrical fuses
Breakdown assistance

TIN (Tire Identification Number)
A unique identification number which can be
used by a tire manufacturer to identify tires, for
example for a product recall, and thus identify
the purchasers. The TIN is composed of the
manufacturer identification code, tire size, tire
model code and manufacturing date.
Load bearing index
The load bearing index (also load index) is a code
that contains the maximum load bearing capa-
city of a tire.
Traction
Traction is the result of friction between the tires
and the road surface.
TWR (permissible trailer drawbar load)
The TWR is the maximum permissible weight
that may act on the ball coupling of the trailer
tow hitch.
Wear indicator
Narrow bars (tread wear bars) that are distrib-
uted over the tire tread. If the tire tread is level
with the bars, the wear limit of áin (1.6 mm)
has been reached.
Distribution of the vehicle occupants
The distribution of vehicle occupants over des-
ignated seat positions in a vehicle.
Maximum permissible payload weight
Nominal load and goods/luggage load plus
68 kg (150 lb s)multiplied by the number of
seats in the vehicle.
Changing wheels
Rotating the wheels
GWARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tires have different dimensions. The wheel brakes or suspension components
may also be damaged. There is a risk of acci-
dent.
Rotate front and rear wheels only if the wheels and tires are of the same dimensions.
!On vehicles equipped with a tire pressure
monitor, electronic components are located
in the wheel.
Tire-mounting tools should not be used near
the valve. This could damage the electronic
components.
Only have tires changed at a qualified spe-
cialist workshop.
Always observe the instructions and safety
notes under "Mounting a wheel" (
Ypage 297).
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires in the center.
If your vehicle's tire configuration allows, you
can rotate the tires according to the intervals in
the tire manufacturer's warranty book in your
vehicle documents. If no warranty book is avail-
able, the tires should be rotated every 3,000 to
6,000 miles (5,000 to 10,000 km) or earlier if
tire wear requires. Do not change the direction
of rotation.
Clean the contact surfaces of the wheel and the
brake disc thoroughly every time a wheel is rota-
ted. Avoid oily or greasy cleaning agents.
Check the tire pressure and reactivate the tire
pressure monitor if necessary.
Direction of rotation
Tires with a specified direction of rotation have
additional benefits, e.g. if there is a risk of hydro-
planing. You will only gain these benefits if the
correct direction of rotation is observed.
An arrow on the sidewall of the tire indicates its
correct direction of rotation.
You may mount a spare wheel against the direc-tion of rotation. Observe the time restriction on
use as well as the speed limitation specified on
the spare wheel.
Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the tires
from contact with oil, grease and fuel.
296Changing wheels
Wheels and tires