2010 MERCEDES-BENZ R320 brake

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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Lamps
Display messages
Possible causes/consequences and
X Solutionsb Active
Headlamps
Inoperativ
e The active Bi-Xenon headlamp system is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Reverse
Lamp Left
or
Reverse
Lamp Right The left or right backup lamp is malfunctioning.
X
Replace the bulb as soon as possible (Y page 312). b Brake
Lamp Left
or
Brake
Lamp Right The left or right brake lamp is malfunctioning. A substitute
bulb is being used.
X
Replace the bulb as soon as possible (Y page 312). b 3rd Brake
Lamp The high-mounted brake lamp is malfunctioning. This
message will only appear if all LEDs have stopped working.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Front
Foglamp
Left
or
Front
Foglamp
Right The left or right front fog lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Marker
Lamp
Front Left
or
Marker
Lamp
Front
Right The front left side or right side marker lamp is malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutionsb Switch
Off Lights You have removed the SmartKey from the starter switch,
opened the driver’s door and left the headlamps on or
removed the SmartKey with KEYLESS-GO from the vehicle
and left the headlamps on.
X
Turn the exterior lamp switch to $ or Ã
(Y page 97).
or
X With the rear fog lamp switched on: Push in the exterior
lamp switch to its stop. b Tail Lamp
Left
or
Tail Lamp
Right The left or right tail lamp is malfunctioning. A substitute bulb
is being used.
X
Replace the bulb as soon as possible (Y page 312). b Cornering
Lamp Left
or
Cornering
Lamp Right The left or right corner-illuminating front fog lamp is
malfunctioning.
X
Contact an authorized Mercedes-Benz Center as soon as
possible. b Trailer
Brake Lamp The left or right trailer brake lamp is malfunctioning.
X
Replace the bulb as soon as possible. b Trailer
Tail Lamp
Left
or
Trailer
Tail Lamp
Right The left or right trailer tail lamp is malfunctioning.
X
Replace the bulb as soon as possible. b Trailer
Turn
Signal
Left
or
Trailer
Turn
Signal
Right The left or right trailer turn signal lamp is malfunctioning.
X
Replace the bulb as soon as possible. Vehicle status messages in the multifunction display
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Display messages
Possible causes/consequences and
X Solutionsh Tire
Pressure
Check
Tires The tire inflation pressure in at least one tire is significantly
below the reference value.
X
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers.
X Check and adjust tire inflation pressure as required.
X If necessary, change the wheel (Y page 319). G
Warning!
Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may
lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up
and possibly a fire. G
Warning!
Follow recommended tire inflation pressures.
Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect
handling and fuel economy, and are more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear
unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are
more likely to become punctured or damaged by road debris, potholes etc. What to do if …
Lamps in instrument cluster
Notes If any of the following lamps in the instrument
cluster fails to come on during the bulb self-
check when switching on the ignition, have
the respective bulb checked and replaced if
necessary.
When you switch on the ignition, all lamps
(except low-beam headlamp indicator lamp,
high-beam

headlamp indicator lamp, and turn
signal indicator lamps unless activated) in the
instrument cluster come on. If a lamp in the
instrument cluster fails to come on when the
ignition is switched on, have it checked and
replaced if necessary. What to do if …
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Brake
Problem
Possible causes/consequences and
X Solutions!
The yellow ABS
indicator lamp
comes on while
the engine is
running. The ABS has detected a malfunction and switched off. The BAS,
the ESP
®
and the PRE-SAFE ®
are also switched off.
The brake system is still functioning normally but without the
systems specified above available.
If the ABS control unit is malfunctioning, other systems such as
the
navigation system or the automatic transmission may also be
malfunctioning.
X Continue driving with added caution. Wheels may lock during
hard braking, reducing steering capability.
X Read and observe messages that may appear in the
multifunction display

(Y page 274).
X Have the system checked at an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions increases the risk of an
accident. !
The yellow ABS
indicator lamp
comes on while
the engine is
running. The ABS has switched off due to insufficient power supply.
The battery might not be charged sufficiently.
When the voltage is above the required value again, the ABS is
operational again. The ABS indicator lamp should go out.
X
If the ABS indicator lamp does not go out: Have the alternator
and the battery checked. !
The yellow ABS
indicator lamp
comes on while
the engine is
running. The self-diagnosis has not been completed yet.
The indicator lamp will go out after driving a short distance at a
vehicle speed of above 12 mph

(20 km/h).300
What to do if …
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Problem
Possible causes/consequences and
X Solutions$ (USA only)
J (Canada only)
!
d
The red brake warning
lamp comes on while
driving. In addition, the
yellow
ABS malfunction
indicator lamp, and the
yellow ESP ®
warning
lamp come on and an
acoustic warning
sounds. The Electronic Brake Proportioning (EBP) switched off due to a
malfunction.
The
ABS, the BAS, the ESP ®
and PRE-SAFE ®
are also switched off.
X Have the system checked at an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions increases the risk of an
accident. $ (USA only)
J (Canada only)
The red brake warning
lamp comes on while
driving and an acoustic
warning sounds. You are driving with the parking brake engaged.
X
Release the parking brake. $ (USA only)
J (Canada only)
The red brake warning
lamp comes on while
the engine is running
and an acoustic
warning sounds. There is insufficient brake fluid in the reservoir.
Risk of accident!
X
Do not drive any further. Stop the vehicle in a safe location as
soon as it is safe to do so.
X Engage the parking brake.
X Read and observe messages that may appear in the
multifunction display

(Y page 274).
X Contact an authorized Mercedes-Benz Center.
Do not add brake fluid! This will not solve the problem. G
Warning!
Driving with the brake warning lamp
illuminated can result in an accident. Have
your

brake system checked immediately if the
brake warning lamp stays on. Do not add
brake fluid before checking the brake system.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be
seriously burned.
! If

you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum
mark or below, have the brake system
checked for brake pad thickness and leaks. What to do if …
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Problem
Possible causes/consequences and
X Solutionsd
The yellow ESP ®
warning lamp
flashes while
driving. The ESP
®
or the 4-ETS has come into operation because of
detected traction loss in at least one tire.
The cruise control is deactivated.
X When driving off, apply as little throttle as possible.
X While driving, ease up on the accelerator pedal.
X Adapt your speed and driving to the prevailing road and weather
conditions.
X Do not deactivate the ESP ®
.
Exceptions: (Y page 65).
Failure to follow these instructions increases the risk of an
accident. At least one wheel is spinning and the 4-ETS has switched off to
prevent overheating of the drive wheel brakes.
X
Read and observe additional messages that may appear in the
multifunction display.
As soon as the brakes have cooled off, the 4-ETS switches on
again.
The message in the multifunction display disappears and the
ESP ®
warning lamp d goes out. Driving systems
Problem
Possible causes/consequences and
X Solutions·
The red distance
warning lamp
comes on while
driving. You are too close to the vehicle in front of you to maintain selected
speed.
X
Apply the brakes immediately to increase the following
distance. ·
The red distance
warning lamp
comes on while
driving and an
acoustic
warning sounds. You are gaining too rapidly on the vehicle ahead of you or the
distance

warning system has recognized a stationary obstacle on
your probable line of travel.
X Apply the brakes immediately.
X Carefully observe the traffic situation. You may need to brake
or maneuver to avoid hitting an obstacle. 304
What to do if …
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Rear lamps Type
:
Tail lamp, brake lamp, side marker lamp:
P 21 W
; Turn signal lamp: PY 21 W
= Rear fog lamp (driver’s side only): P 21 W
? Backup lamp: P 21 W License plate lamps Type
:
License plate lamps: C 5 W Notes on bulb replacement
!
Do not replace LEDs or bulbs not
described in this section. You could
otherwise damage the LEDs, the bulbs or
parts of the vehicle. Only have the LEDs and
bulbs replaced at an authorized Mercedes-
Benz Center.
R Only use 12-volt bulbs of the same type and
with the specified watt rating.
R Switch the lights off before changing a bulb
to prevent short circuits.
R Always use a clean lint-free cloth when
handling bulbs.
R Your hands should be dry and free of oil and
grease.
R If the newly installed bulb does not come
on, contact an authorized Mercedes-Benz
Center. i
Mercedes-Benz recommends using
Longlife (LL) bulbs. Replacing bulbs for front lamps
Before you start to replace a bulb for a front
lamp, do the following:
X Switch off the ignition.
X Turn the exterior lamp switch to position
$.
X Open the hood (Y page 222). 314
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