The brake fluid level is correct when it is
between lower mark (MIN) 0047 and upper
mark (MAX) 0046 of the brake fluid reservoir.
Tires and wheels
Safety notes
Contact an authorized Mercedes-Benz Center
for information on tested and recommended
rims and tires for summer and winter
operation. They can also offer advice
concerning tire service and purchase.
GWarning!
Replace rims or tires with the same
designation, manufacturer and type as shown
on the original part. For further information
contact an authorized Mercedes-Benz Center.
If incorrectly sized rims and tires are
mounted, the wheel brakes or suspension
components can be damaged. Also, the
operating clearance of the wheels and the
tires may no longer be correct.
GWarning!
Worn, old tires can cause accidents. If the tire
tread is worn to minimum tread depth, or if
the tires have sustained damage, replace
them.
When replacing rims, only use genuine
Mercedes-Benz wheel bolts specified for the
particular rim type. Failure to do so can result
in the bolts loosening and possibly an
accident.
Retreaded tires are not tested or
recommended by Mercedes-Benz, since
previous damage cannot always be
recognized on retreads. The operating safety
of the vehicle cannot be assured when such
tires are used.GWarning!
If you feel a sudden significant vibration or
ride disturbance, or you suspect that possible
damage to your vehicle has occurred, you
should turn on the hazard warning flashers,
carefully slow down, and drive with caution to
an area which is a safe distance from the road.
Inspect the tires and the vehicle underbody
for possible damage. If the vehicle or tires
appear unsafe, have the vehicle towed to the
nearest authorized Mercedes-Benz Center or
tire dealer for repairs.
GWarning!
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
could lose control of the vehicle. Continued
driving with a flat tire or driving at high speed
with a flat tire will cause excessive heat build-
up and possibly a fire.
Important guidelines
R Only use sets of tires and rims of the same
type and make.
R Tires must be of the correct size for the rim.
R Break in new tires for approximately
60 miles (100 km) at moderate speeds.
R Regularly check the tires and rims for
damage. Dented or bent rims can cause tire
inflation pressure loss and damage to the
tire beads.
R If the vehicle is heavily loaded, check tire
inflation pressure and correct as required.
R Do not allow your tires to wear down too
far. Adhesion properties on wet roads are
326Tires and wheelsOperation
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advisable to brake the vehicle with
considerable force prior to parking. The heat
generated serves to dry the brakes.
Salt-covered roadsGWarning!
A layer of salt on the brake discs and the brake
linings may cause a delay in the braking
effect, resulting in a significantly increased
braking distance, which could lead to an
accident.
To avoid this danger, you should:
R occasionally brake carefully when you are
driving on salt-covered roads, so that any
layer of salt that may have built up on the
brake discs and the brake linings is
removed without putting other road users
at risk
R maintain a greater distance to the vehicle
ahead and drive with particular care
R carefully apply the brakes at the end of a
trip and immediately after commencing a
new trip, so that salt residues are removed
from the brake disc
Brake service
! The brake fluid level in the reservoir may
be too low if the red brake warning lamp in
the instrument cluster comes on while the
engine is running and an acoustic warning
sounds. Observe additional messages in
the multifunction display that may appear.
Brake pad wear or a leak in the system may
be the reason for low brake fluid in the
reservoir.
Have the brake system inspected
immediately. Contact an authorized
Mercedes-Benz Center.
All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
Mercedes-Benz Center.
Only install brake pads and use brake fluid
recommended by Mercedes-Benz.
GWarning!
If other than recommended brake pads are
installed, or other than recommended brake
fluid is used, the braking properties of the
vehicle can be degraded to an extent that safe
braking is substantially impaired. This could
result in an accident.
! Because the ESC operates automatically,
the engine and ignition must be shut off
(KEYLESS-GO start/stop button in position
0 or 1, or SmartKey in starter switch
position 0 or 1) when the electronic parking
brake is being tested on a brake test
dynamometer or when the vehicle is being
towed with the rear axle raised.
Active braking action through the ESC may
otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
If your brake system is only subjected to
moderate loads, you should occasionally test
the effectiveness of the brakes by applying
above-normal braking pressure at higher
speeds. This will also enhance the grip of the
brake pads.
GWarning!
Make sure not to endanger any other road
users when carrying out these braking
maneuvers.
Refer to the description of the Brake Assist
System (BAS) ( Y page 62).
High-performance brake system and
ceramic brake system
GWarning!
New vehicle brake pads and disks, and
replacement brake pads and disks may take
several hundred miles of driving until they
provide optimum braking efficiency. Until that
time, you may need to use increased brake
pedal pressure while braking. Please be aware
of this and adjust your driving and braking
accordingly during this break-in period.
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Resetting the maintenance service
indicator
In the event that the maintenance service on
your vehicle is not carried out at an authorized
Mercedes-Benz Center, you can have the
maintenance service indicator reset.
The automotive maintenance facility carrying
out the maintenance service will find the
information for resetting the maintenance
service indicator in the maintenance-relevant
literature for your vehicle.
Such literature is available at any authorized
Mercedes-Benz Center or directly from
Mercedes-Benz.
! If the maintenance service indicator was
reset inadvertently, have an authorized
Mercedes-Benz Center correct it.
Only reset the maintenance service
indicator if the proper maintenance service
has been performed. Not following the
proper maintenance service as described
in the Maintenance Booklet will result in
engine damage and/or other vehicle
damage not covered by the Mercedes-Benz
Limited Warranty.
Vehicle care
Cleaning and care of the vehicle
Notes
Regular and proper care will help to maintain
the value of your vehicle.
GWarning!
Many cleaning products can be hazardous.
Some are poisonous, others are flammable.
Always follow the instructions on the
particular container. Always open your
vehicle’s doors or windows when cleaning the
inside.
Never use fluids or solvents that are not
designed for cleaning your vehicle.
Always lock away cleaning products and keep
them out of reach of children.
! When cleaning the vehicle, do not use
scouring agents. Never apply strong force
and only use a soft, wet cloth or sponge.
Otherwise you may scratch or damage the
surface to be cleaned.
While in operation, even while parked, your
vehicle is subjected to varying external
influences which, if gone unchecked, can
attack the paintwork as well as the vehicle
underbody and cause lasting damage.
Such damage is caused not only by extreme
and varying climatic conditions, but also by:
R Air pollution
R Road salt
R Tar
R Gravel and stone chipping
To avoid paint damage, you should
immediately remove:
R Grease and oil
R Fuel
R Coolant
R Brake fluid
R Bird droppings
R Insects
R Tree resins etc.
Frequent washing reduces and/or eliminates
the aggressiveness and potency of the above
adverse influences.
More frequent washings are necessary to
deal with unfavorable conditions:
R near the ocean
R in industrial areas (smoke, exhaust
emissions)
R during winter operation
You should check your vehicle from time to
time for stone chipping or other damage. Any
damage should be repaired as soon as
possible to prevent corrosion.
In doing so, do not neglect the underbody of
the vehicle. A prerequisite for a thorough
check is a washing of the underbody followed
by a thorough inspection. Damaged areas
need to be re-undercoated.354Vehicle careOperation
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Display messagesPossible causes/consequences and 0050 Solutions0049
(USA only) 0024
(Canada only)
Parking Brake
InoperativeWhen you engage or release the electronic parking brake, the red
indicator lamp for the electronic parking brake flashes and goes
out after approx. 10 seconds. The yellow warning lamp for the
electronic parking brake comes on.
The electronic parking brake is malfunctioning.XSwitch ignition off and back on again, and engage or release
electronic parking brake.
If the electronic parking brake cannot be engaged:
XShift the transmission to park position P (Y page 263).XProtect vehicle from rolling away while parked by using a chock
from the vehicle tool kit ( Y page 362).XContact an authorized Mercedes-Benz Center as soon as
possible.0027
(USA only) 004D
(Canada only)
Check Brake Fluid
LevelThere is insufficient brake fluid in the reservoir.
Risk of accident!XStop the vehicle in a safe location or as soon as it is safe to do
so.XEngage the electronic parking brake.XDo not drive any further.XContact an authorized Mercedes-Benz Center or call Roadside
Assistance.
Do not add brake fluid! This will not solve the problem.
GWarning!
Driving with the message Check Brake Fluid Level displayed can result in an accident. Have
your brake system checked immediately.
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.
376Vehicle status messages in the multifunction displayPractical hints
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Display messagesPossible causes/consequences and 0050 Solutions0039
Obtain a New KeyThe SmartKey is malfunctioning.XContact an authorized Mercedes-Benz Center.0039
Close Doors to
Lock VehicleYou tried to lock the vehicle but not all doors were closed.XClose doors and lock the vehicle again.0039
Key Does Not
Belong to VehicleThe SmartKey in the starter switch does not belong to the vehicle.XRemove the SmartKey from the starter switch.0039
Replace Key BatteryThe battery in the SmartKey with KEYLESS-GO is discharged.XReplace the battery ( Y page 399).0039
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.XStop the vehicle as soon as it is safe to do so.XEngage the electronic parking brake.XSearch for the SmartKey.
The vehicle cannot be locked centrally nor can the engine be
started again after the engine is stopped.0039
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.XStop the vehicle as soon as it is safe to do so.XEngage the electronic parking brake.XOperate the vehicle with the SmartKey in the starter switch.0039
Key Not Detected
(message appears in
white)The SmartKey with KEYLESS-GO is momentarily not detected.XChange the position of the SmartKey in the vehicle.XOperate the vehicle with the SmartKey in the starter switch.0039
Insert KeyThe KEYLESS-GO system is malfunctioning.XOperate the vehicle with the SmartKey in the starter switch.00BE
Check Washer FluidThe washer fluid in the washer fluid reservoir has fallen below the
minimum level. XAdd washer fluid ( Y page 325).380Vehicle status messages in the multifunction displayPractical hints
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EngineDisplay messagesPossible causes/consequences and 0050 Solutions00BF
Check Coolant
Level See
Operator's ManualThe coolant level is too low. XAdd coolant ( Y page 324).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.
Display messagesPossible causes/consequences and 0050 Solutions00AE
Coolant Level Low
Stop Vehicle Turn
Engine OffThe coolant is too hot.XStop the vehicle immediately as soon as it is safe to do so.XTurn off the engine immediately.XEngage the electronic parking brake.XOnly start the engine again after the message disappears. You
could otherwise damage the engine.XObserve the coolant temperature in the multifunction display.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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AMG SPEEDSHIFT DCT 7-SPEED TransmissionDisplay messagesPossible causes/consequences and 0050 Solutions0060
Parking Lock
Malfunct. Apply
Parking BrakeThe transmission cannot be shifted to park position P anymore.XMake sure the electronic parking brake is engaged.XBlock the wheels of the vehicle with suitable objects before
leaving the vehicle.XContact an authorized Mercedes-Benz Center. Have the vehicle
transported with all wheels off the ground or towed with the rear
axle raised ( Y page 415).0093
Stop Engage 'P'The transmission is malfunctioning. The vehicle is not propelled
anymore and will coast to standstill.XStop the vehicle in a safe location.XContact an authorized Mercedes-Benz Center.0093
Transmission Oil
Cooling
MalfunctionThe coolant pump of the transmission is malfunctioning. The
transmission could overheat.XSelect the AMG menu via the control system ( Y page 287) and
check the transmission fluid temperature.XAvoid heavy load on the engine and transmission such as a
dynamic manner of driving.XWhen the transmission fluid temperature is below 248‡
(120 †), continue to drive to the next authorized Mercedes-
Benz Center.0093
Trans. Oil
Overheated Drive
on with CareThe transmission fluid is overheated. Manual program mode M
and limiting the gear range are not available anymore. The engine
output is limited according to the degree of the overheating.XReduce the transmission fluid temperature by moderate driving.What to do if...
Lamps in the 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 low-
beam headlamp indicator lamp, high-beam
headlamp indicator lamp, turn signal
indicator lamps, and the indicator lamp for
the rear fog lamp 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.388What to do if...Practical hints
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ProblemPossible causes/consequences and 0050 Solutions0049 (USA only)
0024 (Canada only)
The red indicator lamp
for the electronic
parking brake flashes
and/or the yellow
warning lamp for the
electronic parking
brake is on.The electronic parking brake is malfunctioning or defective.XRead and observe messages that may appear in the
multifunction display ( Y page 364).XHave the system checked at an authorized Mercedes-Benz
Center as soon as possible.0027 (USA only)
004D (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!XDo not drive any further. Stop the vehicle in a safe location as
soon as it is safe to do so.XEngage the electronic parking brake.XRead and observe messages that may appear in the
multifunction display ( Y page 364).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.
390What to do if...Practical hints
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