Safety systemsDisplay messagesPossible causes/consequences and M SolutionsIRaise
Roll-over
BarThe roll bar is malfunctioning.
For safety reasons, always have the roll bar raised when
driving with the retractable hardtop open.XAttempt to raise the roll bar using the roll bar button
( Y page 51).XHave the roll bar checked at an authorized Mercedes-Benz
Center.IRaise
Roll-over
BarThe roll bar was raised automatically and you have attempted
to open or close the retractable hardtop.XRaise the roll bar manually until you hear the roll bar lock
into place ( Y page 51).XOpen or close the retractable hardtop.GTele Aid
Inoperativ
eOne or more main functions of the Tele Aid system are
malfunctioning.XHave the Tele Aid system checked at an authorized
Mercedes-Benz Center.+Restraint
System
Malfunctio
n
Service
RequiredThere is a malfunction in the Supplemental Restraint System
(SRS). The air bags or the Emergency Tensioning Devices
(ETDs) could deploy unexpectedly or fail to activate in an
accident.XDrive with added caution to the nearest authorized
Mercedes-Benz Center and have the system checked
immediately.GWarning!
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.240Vehicle status messages in the multifunction displayPractical hints
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EngineDisplay messagesPossible causes/consequences and M Solutions=
or
;Engine
ServiceThere may be a malfunction in
R the fuel management system
R the ignition system
R the exhaust system
R the fuel systemXHave the engine checkedas soon as possible at an
authorized Mercedes-Benz Center.;Service
RequiredCertain electronic systems are unable to relay information to
the control system. The coolant temperature display or the
tachometer may have failed.XHave the electronic systems checked at an authorized
Mercedes-Benz Center.+Top Up
Coolant
See Oper.
ManualThe coolant level is too low.XAdd coolant ( Y page 184).XIf you have to add coolant frequently, have the cooling
system checked at an authorized Mercedes-Benz Center.GWarning!
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.
244Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M Solutions?Coolant
Stop car,
switch
engine
off.The coolant is too hot.XStop the vehicle immediately as soon as it is safe to do so.XTurn off the engine immediately.XEngage the parking brake.XOnly start the engine again after the message disappears.
You could otherwise damage the engine.XObserve the coolant temperature gauge in the instrument
cluster.XIf 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†).
GWarning!
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.
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Display messagesPossible causes/consequences and M Solutions4Add 1 qt
engine
oil at
next
refueling.
(USA only)
Add 1
liter
engine
oil at
next
refueling.
(Canada
only)Vehicles with engine oil measuring system only:
The engine oil level is too low.XAdd engine oil ( Y page 183) and check the engine oil level
( Y page 181).XIf you must add engine oil frequently, have the engine
checked for possible leaks.If the message Add 1 qt (Canada: 1 liter)
engine oil at next refueling or
Engine Oil Level Check Level 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 servicestation 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 messagesPossible causes/consequences and M Solutions4Engine
Oil Level
Cannot
measure
eng. oil
level.Vehicles with engine oil measuring system only:
The measuring system is malfunctioning.XHave the measuring system checked at an authorized
Mercedes-Benz Center.4Engine
Oil Level
Reduce
Oil LevelVehicles with engine oil measuring system only:
You have added too much engine oil. There is a risk of
damaging the engine or the catalytic converter.XHave oil siphoned or drained off. Observe all legal
requirements with respect to its disposal.248Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and M SolutionshTire
Pressure
Check
TiresThe tire inflation pressure in at least one tire is significantly
below the reference value.XCarefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers.XCheck and adjust tire inflation pressure as required.XIf necessary, change the wheel ( Y page 276).GWarning!
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.
GWarning!
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 in
the instrument cluster come on. The high-
beam headlamp indicator lamp and turn
signal indicator lamps will only come on if
activated. If a lamp in the instrument cluster
fails to come on when the ignition is switched
on, have it checked and replaced if necessary.254What to do if …Practical hints
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BrakeProblemPossible causes/consequences and M 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 hill-start assist system (SL 63 AMG only) are
also switched off.
The electro-hydraulic 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.XContinue driving with added caution. Wheels may lock during
hard braking, reducing steering capability.XAdjust driving to be consistent with reduced braking
responsiveness.XRead and observe messages that may appear in the
multifunction display ( Y page 226).XHave 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.XContinue driving with added caution. Wheels may lock during
hard braking, reducing steering capability.XAdjust driving to be consistent with reduced braking
responsiveness.XRead and observe messages that may appear in the
multifunction display ( Y page 226).XIf the ABS indicator lamp does not go out: Have the alternator
and the battery checked.$ (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.XRelease the parking brake.What to do if …255Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 255Z
ProblemPossible causes/consequences and M Solutions$ (USA only)
J (Canada only)
The red brake warning
lamp comes on while
the engine is running
and an acoustic
warning sounds.There is a malfunction in the electro-hydraulic brake system.
There is insufficient brake fluid in the reservoir.
Risk of accident!XDo not drive any further. Stop the vehicle in a safe location as
soon as it is safe to do so.XEngage the parking brake.XRead and observe messages that may appear in the
multifunction display ( Y page 226).XContact an authorized Mercedes-Benz Center.
Do not add brake fluid! This will not solve the problem.
GWarning!
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.
Safety systems
ProblemPossible causes/consequences and M Solutions7The red seat belt
telltale comes
on for a
maximum of
6 seconds after
starting the
engine.The seat belt telltale reminds you and your passenger to fasten
your seat belts before driving off.XFasten your seat belts.
Regardless of whether the seat belts are fastened or not, the seat
belt telltale always comes on and remains lit for 6 seconds after
starting the engine.
7The red seat belt
telltale comes
on. In addition
you hear a
warning chime
for a maximum
of 6 seconds
after starting the
engine.You have forgotten to fasten your seat belt.XFasten your seat belt.
The warning chime stops sounding.256What to do if …Practical hints
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ProblemPossible causes/consequences and M Solutions7The red seat belt
telltale comes
on while the
vehicle is
standing still
and the engine is
running or while
driving.You and/or your passenger have forgotten to fasten your seat
belts.XFasten your seat belts.
The seat belt telltale goes out.There are items placed on the passenger seat and therefore the
system senses the passenger seat as being occupied.XRemove the items from the passenger seat and put them in a
safe place.
The seat belt telltale goes out.7The red seat belt
telltale flashes
while driving. In
addition, an
intermittent
warning chime
sounds with
increasing
intensity.The vehicle’s speed once exceeded 15 mph (25 km/h) and you
and/or your passenger have forgotten to fasten your seat belts.XFasten your seat belts.
The seat belt telltale goes out and the warning chime stops
sounding.There are items placed on the passenger seat and therefore the
system senses the passenger seat as being occupied.XRemove the items from the passenger seat and put them in a
safe place.
The seat belt telltale goes out and the warning chime stops
sounding.
i After 60 seconds with an unfastened seat belt the warning chime stops sounding and the
seat belt telltale illuminates continuously. The seat belt telltale will only go out if both, the
driver and passenger’s seat belt are fastened, or the vehicle is standing still and a door is
opened.
ProblemPossible causes/consequences and M Solutions+The red SRS
indicator lamp
comes on while
driving.There is a malfunction in the restraint systems. The air bags or
Emergency Tensioning Devices (ETDs) could deploy unexpectedly
or fail to activate in an accident.XDrive with added caution to the nearest authorized Mercedes-
Benz Center.GWarning!
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.What to do if …257Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 257Z