2008 MERCEDES-BENZ R-CLASS MPV trailer

Service
242
Fitting the adapter
1
Connector with lug
2 Socket with groove
X Open the socket cover.
X Insert the connector with lug 1into
groove 2on the socket and turn the con-
nector clockwise to the stop.
X Make the cover engage.
X If you are using an adapter cable, secure
the cable to the trailer with cable ties.
! Make sure that there is sufficient cable
play so that the cable cannot become
detached when cornering. Service
ASSYST PLUS service interval display
ASSYST PLUS, the service interval display,
tells you when the next service is due. When-
ever a service is due, the following message
appears in the multi-function display:
Service A due in .. days
Service A due in .. km
Service A due now The letter indicates how much time the work-
shop will require to carry out the service work.
The letters displayed range from
Afor a short
service duration to Hfor a long service dura-
tion.
The service interval display ASSYST PLUS
does not record any periods of time during
which the battery is disconnected. In order to
maintain the time-dependent service sched-
ule, you should call up the service due date
and make a note of it before disconnecting
the battery. The alternative is to subtract the battery disconnection periods from the
service date shown on the display. Fading out the service message
1
Reset button
X Press the 1reset button on top of the
instrument cluster.
The service message goes out. Operation
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Care
248
Cleaning the reversing camera*
1
Camera lens
X Use clear water and a soft cloth to clean
camera lens 1.
! Do not clean the camera lens and the area
around the reversing camera with:
R high-pressure cleaning equipment
R a dry cloth and a lot of pressure
R corrosive cleaning products
You could otherwise damage the reversing
camera. Trailer coupling
The ball coupling must be cleaned if it
becomes dirty or corroded.
X Remove any rust using a wire brush.
X Remove dirt with a clean, lint-free cloth or
a brush.
! Do not clean the ball coupling with a high-
pressure cleaner. Do not use solvents. 1
Ball neck head
2 Locking balls
3 Guide pin
4 Guide faces
5 Release lever
6 Protective cap X
Lightly oil or grease positions 1to6 and
the ball coupling recess of the vehicle after
cleaning.
X Treat the lock under protective cap 6with
an acid- and resin-free oil.
X Check that the vehicle's trailer coupling is
working properly.
! Observe the note on care provided by the
trailer manufacturer.
i Maintenance of the ball coupling and
trailer coupling can also be performed by
any Mercedes-Benz Service Centre. H
Environmental note
Dispose of oily and greasy cloths in an envi-
ronmentally-responsible manner. Operation
* optional
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Where will I find...?
252 Vehicle tool kit, jack, TIREFIT kit and
emergency spare wheel*
The vehicle tool kit, jack, TIREFIT kit and
emergency spare wheel* are in the stowage
compartment under the luggage compart-
ment floor. G
Risk of injury
The jack is designed only to raise and hold
the vehicle for a short time while a wheel
is being changed.
You must use stands if you are carrying out
work on the vehicle.
Make sure that the jack is placed on a firm,
non-slip and level surface. Do not use
wooden blocks or similar objects as a jack
underlay. Otherwise, the jack will not be
able to achieve its load-bearing capacity
due to the restricted height.
Do not start the engine at any time while a
wheel is being changed.
Do not lie under the vehicle when it is being
supported by the jack. If you do not raise
the vehicle as described, it could slip off the
jack (e.g. if the engine is started or a door
or the tailgate is opened or closed) and you
could be seriously injured. X
Open the tailgate.
X Open the luggage compartment floor
(Y page 250).
! If the luggage compartment cover* is fit-
ted, roll it open fully.
Only for luggage compartment covers* fit-
ted behind the 3rd row of seats:
Fold forwards the section of the luggage
compartment cover* that is still protrud-
ing. Otherwise the strap of the retaining
hook may damage the luggage compart-
ment cover*.
Vehicles with a TIREFIT kit i
Depending on the date of production of
the vehicle, the appearance and stowage
location of the jack and of the other tools
may differ from those illustrated. Example
1
Ball coupling of the trailer tow hitch*
2 Folding wheel chock
3 Jack, ratchet ring spanner
4 TIREFIT kit 30
5 Electric air pump 30
6 Fuse allocation chart
7 Wheel wrench
8 Towing eye
9 Centring pin
Vehicles with an emergency spare
wheel* i
Depending on the date of production of
the vehicle, the appearance and stowage
30 Not on vehicles with MOExtended run-flat system. Practical advice
* optional
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Where will I find...?
253
location of the jack and of the other tools
may differ from those illustrated.
Example
1
Tool holder
2 Wheel wrench
3 Electric air pump
4 Instructions on the installation position of
the tool holder
5 Fuse allocation chart
6 Jack, ratchet ring spanner
7 Centring pin
8 Folding wheel chock
9 Towing eye
a Wheel bolts
b Ball coupling of the trailer tow hitch*
c Emergency spare wheel* Removing the emergency spare wheel*
X
Remove the jack from the tool holder
(Y page 252). 1
Retaining screw
2 Emergency spare wheel*
3 Tool holder
X Turn retaining screw 1anticlockwise and
out of tool holder 3and remove it.
i If retaining screw 1does not come out
immediately, turn tool holder 3anticlock-
wise a little.
Retaining screw 1should then unscrew
with ease. X
Turn tool holder 3approximately 180°, so
that the electrical air pump points back-
wards (Y page 252).
X Remove tool holder 3from emergency
spare wheel* 2.
X Remove emergency spare wheel* 2from
the emergency spare wheel well.
Stowing the emergency spare wheel*
X Remove the warning triangle from the
emergency spare wheel well (Y page 250). 1
Guides
In the spare wheel well, there are two guides
1 to keep the emergency spare wheel* in
place. Practical advice
* optional
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Display
messages 267Display messages Possible cause/consequence Possible solution
> Vehicle rising
Wait briefly The vehicle level is too low. X
Do not pull away.
The rear axle level control* or AIRMATIC* has
not yet set the level required for driving.
X Wait until the display message disappears
before pulling away. > STOP car too low
G
Risk of accident
You have pulled away while the vehicle
level is still too low or the rear axle level
control* or AIRMATIC* is faulty. The rear axle level control* or AIRMATIC* should
set the vehicle to the selected level after a short
period. While the message is displayed:
X Avoid large steering angles. Otherwise, the
front wing or the tyres could be damaged when
you drive on. Listen for scraping sounds.
X Do not exceed a maximum speed of 80 km/h.
If the display message does not disappear:
X Have the vehicle checked at a qualified spe-
cialist workshop. > Level selection
not permitted You cannot change the vehicle level. Pos-
sible causes:
R
Vehicles with AIRMATIC*: you are
exceeding the speed permissible for the
selected vehicle level.
R You are towing a trailer.
R The socket of the trailer coupling is
being used, for example, by a cycle
rack. X
Vehicles with AIRMATIC*: drive slower and
reselect the desired vehicle level.
X Observe the notes on trailer towing
(Y page 239). Practical advi
ce
* optional
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Display
messages 270 Display messages Possible cause/consequence Possible solution
B Top up coolant See
Owner's Manual The coolant level is too low. X
Top up the coolant, observing the warning
notes before doing so (Y page 223).
X Have the coolant system checked at a qualified
specialist workshop if the coolant needs top-
ping up more often than usual. . Left-hand Corner-
ing light
or
Right-hand Corner-
ing light The left-hand and/or right-hand cornering
lamp* is faulty. X
Replace the bulb (Y page 306).. Left-hand dipped
beam
or
Right-hand dipped
beam The right-hand or left-hand dipped-beam
headlamp is faulty. X
Halogen headlamp: replace the bulb
(Y page 306).
X Bi-xenon headlamp*: visit a qualified special-
ist workshop. . AUTO lights inop-
erative The light sensor is faulty. Constant head-
lamp mode is switched on. X
Switch the lights to manual control in the on-
board computer (Y page 132).
X Switch the lights on and off using the light
switch. . Trailer Left-hand
turn signal
or
Trailer Right-hand
turn signal There is a malfunction in the left- or right-
hand windowbag. X
Replace the bulb. Practical advi
ce
* optional
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Display
messages 271Display messages Possible cause/consequence Possible solution
. Trailer brake lamp The trailer brake lamp is faulty. X
Replace the bulb. . Trailer Left-hand
tail lamp
or
Trailer Right-hand
tail lamp The left-hand or right-hand trailer tail lamp
is faulty. X
Replace the bulb. . Turn signal, rear
left
or
Turn signal, rear
right The rear left-hand or rear right-hand turn
signal is faulty. X
Replace the bulb (Y page 306). . Turn signal in mir-
ror, left
or
Turn signal in mir-
ror, right The turn signal in the left-hand or right-
hand exterior mirror is faulty. This mes-
sage will only appear if all LEDs have
failed. X
Visit a qualified specialist workshop. . Turn signal, front
left
or
Turn signal, front
right The front left-hand or right-hand turn sig-
nal is faulty. X
Replace the bulb (Y page 306). Practical advi
ce
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Troubleshooting
299Problem Possible cause/consequence Suggested solutions
The vehicle cannot be started
using the KEYLESS GO key and
the KEYLESS GO button. The KEY-
LESS GO key is in the vehicle. A door is open. The key can there-
fore not be detected as easily. X
Close the door and try to start the vehicle again. You did not depress the brake
when starting the engine. X
Depress the brake and press the KEYLESS GO button. There is interference from a pow-
erful source of radio waves. X
Start your vehicle using the KEYLESS GO key in the ignition lock. You have lost the KEYLESS GO
key. X
Have the KEYLESS GO key cancelled at a Mercedes-Benz Service
Centre.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. Trailer towing*
Problem Possible cause/consequence Suggested solutions
The ball coupling cannot be
locked.
The key cannot be removed from
the ball coupling. G
Risk of accident
The ball coupling is dirty.
The trailer coupling is damaged. X
Remove the ball coupling and clean it (Y page 248). If the ball cou-
pling still cannot be locked, remove the ball coupling. It must no
longer be used to tow a trailer, as safe operation is not guaranteed.
X Have the entire trailer coupling checked at a qualified specialist
workshop. Practical advice
* optional
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