2010 MERCEDES-BENZ R320 Owner's Manual

Safety systems
Display messages
Possible causes/consequences and
X SolutionsG Tele Aid
Inoperativ
e One or more main functions of the Tele Aid system are
malfunctioning.
X
Have the Tele Aid system checked at an authorized
Mercedes-Benz Center. + Restraint
Sys.
Malfunctio
n
Service
Required The system is malfunctioning.
X
Drive with added caution to the nearest authorized
Mercedes-Benz Center and have the system checked
immediately. G
Warning!
In the event a malfunction of the SRS is
indicated as outlined above, the SRS may not
be operational.
For your safety, we strongly recommend that
you contact an authorized Mercedes-Benz Center immediately to have the system
checked. Otherwise the SRS may not be
activated

when needed in an accident, which
could result in serious or fatal injury, or it
might deploy unexpectedly and unnecessarily
which could also result in injury.
Driving systems Display messages
Possible causes/consequences and
X SolutionsÁ Level
Selection
Not
Permitted You are driving too fast for the desired vehicle level.
X
Reduce vehicle speed and set the desired vehicle level
again ( Y page 154). Á Vehicle
Rising
Wait
Briefly The vehicle level is too low.
X
Wait until the message disappears from the multifunction
display. Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X SolutionsÁ STOP Car
Too Low You have driven off while the vehicle level was too low or the
AIRMATIC is inoperative.
The
AIRMATIC should have raised the vehicle to the set level
after a short while. While the message is displayed:
X Avoid excessive steering maneuvers. The fenders or tires
could otherwise be damaged. Listen for scraping noises.
X Do not drive faster than 50 mph (80 km/h).
If the message does not disappear from the multifunction
display:
X Have the system checked at an authorized Mercedes-Benz
Center. Á Malfunctio
n The AIRMATIC is malfunctioning.
X
Do not drive faster than 50 mph (80 km/h).
X Have the system checked at an authorized Mercedes-Benz
Center. Á Compressor
Cooling
Down You have selected a higher vehicle level. Due to frequent level
changes within a short period, the compressor must cool
down first.
!
When

the message Compressor Cooling Down appears
in the multifunction display, driving is still possible. Keep in
mind that the ride height of the vehicle is not yet reached,
so you can damage the underbody of the vehicle.
X Let the compressor cool down until the message
disappears.
The selected level will be set once the compressor has
cooled down. Vehicle
Display messages
Possible causes/consequences and
X SolutionsE You are driving with the hood or the tailgate open.
X
Stop the vehicle in a safe location as soon as it is safe to
do so.
X Close the hood ( Y page 223) or the tailgate ( Y page 75).
There is otherwise danger of an accident. You are trying to lock the vehicle with the KEYLESS-GO
function with a door or the tailgate open.
X
Close all doors and/or the tailgate ( Y page 75).288
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Display messages
Possible causes/consequences and
X Solutions; You are driving with at least one door open.
X
Close all doors. + Key
Detected
In Vehicle A SmartKey with KEYLESS-GO left in the vehicle was
recognized while trying to lock the vehicle from the outside.
X
Take the SmartKey out of the vehicle. + Don’t
Forget
Your Key This message appears for a maximum of 60 seconds if the
driver’s door is opened with the engine turned off and no
SmartKey in the starter switch. This message is only a
reminder.
X
Take the SmartKey with you when leaving the vehicle. + Remove Key You have forgotten to remove the SmartKey.
X
Remove the SmartKey from the starter switch. + You need
a new key. The SmartKey is malfunctioning.
X
Contact an authorized Mercedes-Benz Center. + Key Does
Not
Belong to
Vehicle The SmartKey in the starter switch does not belong to the
vehicle.
X
Find the SmartKey that belongs to the vehicle to operate
the vehicle. + Change
Key
Batteries The batteries in the SmartKey with KEYLESS-GO are
discharged.
X
Replace the batteries ( Y page 310).+ Key Not
Detected
(message
appears in
red) The SmartKey with KEYLESS-GO is not detected while the
engine
is running because the SmartKey is not in the vehicle.
X Stop the vehicle as soon as it is safe to do so.
X Engage the parking brake.
X Search for the SmartKey.
The vehicle cannot be locked centrally nor can the engine
be started again after the engine is stopped. + Key Not
Detected
(message
appears in
red) The SmartKey with KEYLESS-GO is not detected while the
engine is running because there is strong radio-frequency
interference.
X
Stop the vehicle as soon as it is safe to do so.
X Engage the parking brake.
X Remove the KEYLESS-GO button from the starter switch
(Y page 80).
X Operate the vehicle with the SmartKey in the starter switch. Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutions+ Key Not
Detected
(message
appears in
white) The SmartKey with KEYLESS-GO is momentarily not detected.
X
Change the position of the SmartKey in the vehicle.
X If necessary, remove the KEYLESS-GO button from the
starter switch ( Y page 80).
X Operate the vehicle with the SmartKey in the starter switch. + Pull
starting
button
out then
insert
key. The SmartKey with KEYLESS-GO is permanently not detected.
X
Remove the KEYLESS-GO button from the starter switch
(Y page 80).
X Operate the vehicle with the SmartKey in the starter switch.
X Contact an authorized Mercedes-Benz Center. ~ Bluetooth
Ready The telephone has not yet been connected to the COMAND
system via Bluetooth
®
.
X Connect the telephone to the COMAND system via
Bluetooth ®
. ¥ Top Up
Washer
Fluid
The fluid level has dropped to approximately
1
/ 3 of total
reservoir capacity.
X Add washer fluid ( Y page 226).Engine
Display messages
Possible causes/consequences and
X Solutions+ Top Up
Coolant
See
Operator’s
Manual The coolant level is too low.
X
Add coolant (Y page 225).
X If you have to add coolant frequently, have the cooling
system checked at an authorized Mercedes-Benz Center. G
Warning!
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! Do not ignore the low engine coolant level warning. Extended driving with the message
and
symbol displayed may cause serious engine damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant in the cooling system. The engine will
overheat causing major engine damage. 290
Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutions? Coolant
Stop car,
switch
engine
off. The coolant is too hot.
X
Stop the vehicle immediately as soon as it is safe to do so.
X Turn off the engine immediately.
X Engage the parking brake.
X Only start the engine again after the message disappears.
You could otherwise damage the engine.
X Observe the coolant temperature in the multifunction
display.
X If the temperature rises again: Contact an authorized
Mercedes-Benz Center immediately.
During severe operation conditions and stop-and-go city
traffic, the coolant temperature may rise close to 248‡
(120†). G
Warning!
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam
from an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down.
! The engine should not be operated with the coolant temperature above 248‡ (120†).
Doing so may cause serious damage which is not covered by the Mercedes-Benz Limited
Warranty. Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutions? Coolant
Stop car,
switch
engine
off. The poly-V-belt could be broken.
X
Stop the vehicle immediately as soon as it is safe to do so.
X Turn off the engine immediately.
X Check the poly-V-belt.
X If it is broken: Do not continue to drive. Otherwise the
engine will overheat due to an inoperative water pump
which may result in damage to the engine. Contact an
authorized Mercedes-Benz Center.
X If it is intact: Do not continue to drive the vehicle with this
message displayed. Doing so could result in serious engine
damage that is not covered by the Mercedes-Benz Limited
Warranty.
X Observe the coolant temperature in the multifunction
display.
X Drive to the nearest authorized Mercedes-Benz Center
immediately. ? The radiator cooling fan is malfunctioning.
X
Observe the coolant temperature in the multifunction
display.
If

the coolant temperature is below 248‡ (120†), you may
continue driving to an authorized Mercedes-Benz Center.
X Avoid placing heavy loads on the engine (e.g. by driving
uphill) as well as stop-and-go traffic.
X Have the fan replaced as soon as possible. # The battery is no longer charging.
Possible causes:
R
alternator malfunctioning
R broken poly-V-belt
R a malfunction in the electronic system
X Stop immediately in a safe location or as soon as it is safe
to do so and check the poly-V-belt.
X If it is broken: Do not continue to drive. Otherwise the
engine will overheat due to an inoperative water pump
which may result in damage to the engine. Contact an
authorized Mercedes-Benz Center.
X If it is intact: Drive to the nearest authorized Mercedes-
Benz Center immediately. Adjust driving to be consistent
with reduced braking responsiveness. 292
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Display messages
Possible causes/consequences and
X Solutions# Battery/
Alternator
Stop
Vehicle The battery is defective.
X
Stop the vehicle in a safe location or as soon as it is safe
to do so.
X Engage the parking brake.
X Do not continue to drive.
X Contact an authorized Mercedes-Benz Center. 4 Check
engine
oil level
at next
refueling. The engine oil level is too low.
X
Check the engine oil level ( Y page 224) and add engine oil
as required ( Y page 225).
X If you must add engine oil frequently, have the engine
checked for possible leaks. If the message Check engine oil level
at next refueling. appears while the
engine is running and at operating
temperature,

the engine oil level has dropped
to approximately the minimum level.
The message will be stored in the vehicle
status message memory after you have
cleared it from the multifunction display.
Visually check for oil leaks. If there are no
obvious oil leaks, drive to the nearest service
station to refill your engine oil to the required
level. For information on approved engine oils
contact
an authorized Mercedes-Benz Center
or visit www.mbusa.com (USA only).
! Engine oil level warnings should not be
ignored. Extended driving with the symbol
displayed could result in serious engine
damage that is not covered by the
Mercedes-Benz Limited Warranty. Display messages
Possible causes/consequences and
X SolutionsC The fuel level is low.
X
Refuel at the next gas station. 8 Reserve
Fuel The fuel level has dropped below the reserve mark.
X
Refuel at the next gas station. 8 Ultra Low-
sulfur
Diesel
Fuel Only Vehicles with diesel engine only:
The fuel level has dropped below the reserve mark.
X
Refuel at the next gas station.
X Only use commercially available vehicular ULTRA-LOW
SULFUR DIESEL FUEL (15 ppm SULFUR MAXIMUM). Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutions8 Gas Cap
Open A loss of pressure has been detected in the fuel system. The
fuel cap may not be closed properly or the fuel system may
be leaky.
X
Check the fuel cap ( Y page 221).
X If it is not closed properly: Close the fuel cap.
X If it is closed properly: Have the fuel system checked at
an authorized Mercedes-Benz Center. ¸ Replace
air filter The air filter is clogged.
X
Have the air filter checked at an authorized Mercedes-Benz
Center. · Clean
Fuel
Filter There is water in the fuel filter.
X
Have the water drained at an authorized Mercedes-Benz
Center as soon as possible. Ø Check
Additive
See
Operator's
Manual
The AdBlue
®
supply is almost depleted.
X Have the AdBlue ®
tank refilled as soon as possible
(Y page 331).
Contact an authorized Mercedes-Benz Center. Ø Remaining
Starts: 20
The AdBlue
®
supply has dropped to the minimum level.
X Have the AdBlue ®
tank refilled immediately (Y page 331).
Contact an authorized Mercedes-Benz Center. i
When the message Remaining
Starts: 20 appears in the multifunction
display, you can start the engine 20 more
times. If you do not add AdBlue ®
, the
engine cannot be started beyond that
point. Therefore, fill the AdBlue ®
tank with approximately 1 gal (3.79 l) AdBlue
®
(corresponds to approximately 2 refill
containers AdBlue ®
) or have the AdBlue ®
tank

filled at an authorized Mercedes-Benz
Center. After AdBlue ®
was refilled, the
engine can be started again. 294
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