engine MERCEDES-BENZ M-Class 2011 W164 Workshop Manual

Steering wheel paddle shifters:Left-hand steering wheel paddle shifter;Right-hand steering wheel paddle shifter
You can restrict or derestrict the shift range
by using the steering wheel paddle shifter.
You can change gear yourself by using the
steering wheel paddle shifters in the manual
drive program.
Automatic drive program
Drive program C is characterized by the
following:
R the vehicle pulling away more gently in
forward and reverse gears, unless the
accelerator pedal is depressed fully
R increased sensitivity; this improves driving
stability on slippery road surfaces, for
example.
R the automatic transmission shifting up
sooner, which results in the vehicle being
driven at lower engine speeds and the
wheels being less likely to spin
In drive program S, the automatic
transmission shifts up later.
Shift ranges
Introduction
When the automatic transmission is in
position D, it is possible to restrict or
derestrict the shift range ( Y page 148).
The shift range selected is shown in the
multifunction display. The automatic
transmission shifts only as far as the selected
gear.Driving situations=You can use the engine's braking
effect.5To use the braking effect of the
engine on downhill gradients and
for driving:
R on steep mountain roads
R in mountainous terrain
R in arduous conditions4To use the braking effect of the
engine on extremely steep downhill
gradients and on long downhill
stretches
Restricting the shift range
XPull the left-hand steering wheel paddle
shifter.
The shift range is restricted.
i In order to prevent the engine from
overrevving, the automatic transmission
does not shift down when the engine speed
is too high.
i If the maximum engine speed for the shift
range is reached and you continue to
accelerate, the automatic transmission
shifts up in order to prevent the engine
from overrevving, even if the shift range is
restricted.
Derestricting the shift range
XPull the right-hand steering wheel paddle
shifter.
The shift range is derestricted.148Automatic transmissionDriving and parking
BA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 148

Clearing the shift range restrictionXPull and hold the right-hand steering wheel
paddle shifter until D is shown again in the
multifunction display.
The automatic transmission shifts from the
current shift range directly to D.
Selecting the ideal shift range
XPull the left-hand steering wheel paddle
shifter and hold it in position.
The automatic transmission shifts to the
gear which allows ideal acceleration and
deceleration. To do this, the automatic
transmission shifts down one or more
gears.
Manual drive program
Switching on the manual drive program
The manual drive program is only available for
AMG vehicles.
Manual drive program M is different from
drive program S with regard to spontaneity,
responsiveness and smoothness of gear
changes.
Manual drive program M can be selected
using the program selector button. You can
change gear using the steering wheel paddle
shifters in manual drive program M if the
transmission is in position D. The gear
currently selected and engaged is shown in
the multifunction display.
XPress program selector button
( Y page 147) repeatedly until M appears in
the multifunction display.
Upshifting
XPull the right-hand steering wheel paddle
shifter ( Y page 148).
The automatic transmission shifts up to the
next gear.
! In manual drive program M, the automatic
transmission does not shift up
automatically even when the engine
limiting speed for the current gear is
reached. When the engine limiting speed is
reached, the fuel supply is cut to prevent
the engine from overrevving. Always make
sure that the engine speed does not reach
the red area of the tachometer. There is
otherwise a risk of engine damage.
Before the engine speed reaches the red area,
you will see an upshift indicator in the
multifunction display.:Gear indicator;Upshift indicatorXPull the right-hand steering wheel paddle
shifter.
The automatic transmission shifts up to the
next gear.
Downshifting
XPull the left-hand steering wheel paddle
shifter ( Y page 148).
The automatic transmission shifts down to
the next gear.
i If you brake the vehicle or stop without
shifting down, the automatic transmission
will shift down to a gear that will allow the
vehicle to accelerate or pull away again.
i For maximum acceleration, pull the left-
hand steering wheel paddle shifter until the
transmission selects the optimum gear for
the current speed.
Kickdown
i Kickdown is not possible in manual drive
program M.
Automatic transmission149Driving and parkingBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 149Z

Problems with the transmissionProblemPossible causes/consequences and M SolutionsThe acceleration ability
is deteriorating.
The transmission no
longer changes gear.The transmission is in emergency mode.
It is only possible to shift into 2nd gear and reverse gear.XStop the vehicle.XShift the transmission to position P.XSwitch off the engine.XWait at least 10 seconds before restarting the engine.XShift the transmission to position D or R.
If D is selected, the transmission shifts into 2nd gear; if R is
selected, the transmission shifts into reverse gear.XHave the transmission checked at a qualified specialist
workshop immediately.Transfer case
This section is only valid for vehicles with 4-
wheel drive (4MATIC). Power is always
transmitted to both axles.
! Performance tests may only be carried
out on a 2-axle dynamometer. The brake
system or transfer case could otherwise be
damaged. Contact an authorized
Mercedes-Benz Center for a performance
test. Mercedes-Benz recommends that you
use an authorized Mercedes-Benz Center
for this purpose.
! If the parking brake is being tested on a
brake dynamometer, the ignition must be
switched off (SmartKey or Start/Stop
button in position 0 or 1), as ESP ®
will
otherwise automatically intervene. The test
must last a maximum of 10 seconds. The
brake system could otherwise be damaged.Refueling
Important safety guidelines
GWarning!
Gasoline and diesel fuels are highly flammable
and poisonous. They burn violently and can
cause serious injury.
Never allow sparks, flames or smoking
materials near gasoline or diesel fuel!
Turn off the engine before refueling.
Whenever you are around gasoline or diesel
fuel, avoid inhaling fumes and any skin or
clothing contact. Extinguish all smoking
materials.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging your
health.
GWarning
Overfilling of the fuel tank may create
pressure in the system which could cause a
gas discharge. This could cause the gasoline
to spray back out when removing the fuel
pump nozzle, which could cause personal
injury.
Refueling151Driving and parkingBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 151Z

GWarning!
HYBRID vehicles: It is imperative that you read
the HYBRID Supplemental Operating
Instructions included in your vehicle literature
portfolio. You may otherwise not receive all
necessary safety information and warning for
the operation of your vehicle.
GWarning!
Do not fill diesel tanks with gasoline. Do not
mix diesel fuel with gasoline. Otherwise the
fuel system and engine could be damaged. In
addition, the vehicle could catch fire.
! Do not use gasoline to refuel vehicles with
a diesel engine. Do not use diesel to refuel
vehicles with a gasoline engine. Even small
amounts of the wrong fuel result in damage
to the fuel system and engine.
! Do not start the engine if you accidentally
refuel with the wrong fuel. Otherwise, the
fuel could enter the fuel lines. This would
require draining of the fuel tank and fuel
lines. Notify a qualified specialist workshop
and have the fuel tank and fuel lines
drained completely.
Gasoline
Fuel grade
! You should only refuel with unleaded
premium-grade gasoline as this avoids
damaging the catalytic converter.
If engine running problems are apparent,
have the cause checked immediately and
repaired. Excess unburned fuel can
otherwise enter the catalytic converter,
leading to overheating and possibly
causing a fire.
i Only refuel with unleaded premium-grade
gasoline with a specified minimum octane
number of 91 (average value of 96 RON/
86 MON).
Usually you will find information about the
fuel grade on the pump. If you cannot find
the label on the gasoline pump, ask the gas
station staff.
You can find further information under
"Fuel" ( Y page 358), by consulting an
authorized Mercedes-Benz Center or
visiting http://www.mbusa.com (USA
only).
Diesel
Fuel grade
! Only refuel with ULTRA-LOW SULFUR
DIESEL FUEL (ULSD, 15 ppm SULFUR
MAXIMUM). Using other diesel fuels could
result in increased wear and damage to the
engine and/or exhaust system.
Never refuel with marine diesel or heating
oil.
Do not mix these fuels with diesel fuels and
do not use any special additives, as this
may result in damage.
! When refueling using a fuel can, use a
filter or use a clean cloth as a filter.
Otherwise, particles from the fuel can may
block the fuel lines and/or the diesel
injection system.
i Refuel only with ULTRA-LOW SULFUR
DIESEL FUEL (ULSD, 15 ppm SULFUR
MAXIMUM).
Usually you will find information about the
fuel grade on the pump. If you cannot find
the label on the gasoline pump, ask the gas
station staff.
You can find further information under
"Fuel" ( Y page 358), by consulting an
authorized Mercedes-Benz Center or by
visiting http://www.mbusa.com (USA
only).
Low outside temperatures
! Do not use gasoline to refuel vehicles with
a diesel engine. Never mix diesel with
gasoline or kerosene, as this may result in
damage to the engine or fuel system.
152RefuelingDriving and parking
BA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 152

Diesel fuel with improved cold flow properties
is available during the winter months. Further
information on fuel properties can be
obtained from oil companies, e.g. at filling
stations.
Refueling
Fuel filler flap
The fuel filler flap is unlocked or locked
automatically when you open or close the
vehicle with the SmartKey or using KEYLESS-
GO.
The position of the fuel filler flap is to the rear
on the right. The position of the fuel filler cap
is displayed in the instrument cluster 8.
The arrow next to the filling pump indicates
the side of the vehicle.
:To open the fuel filler flap;To insert the fuel filler cap=Fuel type?Tire pressure table
Opening
XSwitch off the engine.
i When the engine is running and the fuel
filler flap is open, the yellow reserve fuel
warning lamp and the ! (USA only)
or ; (Canada only) engine diagnostics
warning lamp may light up.
For further information on warning and
indicator lamps in the instrument cluster,
see ( Y page 252).
XRemove the SmartKey from the ignition
lock.
KEYLESS-GO: the driver's door is open.
This returns the ignition to position 0,
which corresponds to the SmartKey being
removed. The driver's door can be closed
again.XPress the fuel filler flap in the direction of
arrow :.
The fuel filler flap opens slightly.XOpen the fuel filler flap.XTurn the fuel filler cap counter-clockwise
and remove it.XInsert the fuel filler cap into the holder
bracket on the inside of filler flap ;.XCompletely insert the filler neck of the fuel
pump nozzle into the tank and refuel.XOnly fill the tank until the pump nozzle
switches off.
! Overfilling the fuel tank could damage the
fuel system.
Closing
XReplace the fuel filler cap and turn it
clockwise. The fuel filler cap audibly
engages.
i Close the fuel filler flap before locking the
vehicle. A locking pin otherwise prevents
the fuel filler flap from closing after the
vehicle has been locked.
XClose the fuel filler flap.
Emergency fuel filler flap release
GWarning!
HYBRID vehicles: It is imperative that you read
the HYBRID Supplemental Operating
Instructions included in your vehicle literature
portfolio. You may otherwise not receive all
necessary safety information and warning for
the operation of your vehicle.
Refueling153Driving and parkingBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 153Z

Problems with the fuel and fuel tankProblemPossible causes/consequences and M SolutionsFuel is leaking from the
vehicle.GRisk of explosion or fire
The fuel line or fuel tank is defective.
XTurn the SmartKey to position 0(Y page 139) in the ignition lock
immediately and remove it.XDo not restart the engine under any circumstances.XConsult a qualified specialist workshop.The fuel filler flap
cannot be opened.The fuel filler flap is not released.
or
The SmartKey batteries are discharged.XUnlock the vehicle using the mechanical key ( Y page 75).XOpen the tailgate.XManually unlock the fuel filler flap using the emergency release
( Y page 153).The fuel filler flap is released, but the opening mechanism is
jammed.XManually unlock the fuel filler flap using the emergency release
( Y page 153).XConsult a qualified specialist workshop.The fuel tank in a diesel
engine vehicle has
been run completely
dry and the engine will
not start.There is air in the fuel system.XRefuel the vehicle with at least 5.3 US qt (5 liters) of diesel.XTurn the ignition on for at least 10 seconds. Turn the SmartKey
to position 2(Y page 139) in the ignition lock.XStart the engine continuously for up to 10 seconds until it runs
smoothly.
If the engine does not start:
XTurn the ignition on again for approximately 10 seconds. Turn
the SmartKey to position 2(Y page 139) in the ignition lock.XStart the engine again continuously for up to 10 seconds until
it runs smoothly.
If the engine does not start after three attempts:
XConsult a qualified specialist workshop.Refueling155Driving and parkingBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 155Z

AdBlue®
Important notes on use
BlueTEC exhaust gas aftertreatment 25
must
be operated with AdBlue ®
reducing agent in
order to function properly. Adding AdBlue ®
is
one of the tasks performed during
maintenance. Under normal operating
conditions, a tank of AdBlue ®
lasts until the
next service due date.
When the AdBlue ®
supply has almost run out,
the Check Additive – See Operator's
Manual message is shown in the
multifunction display.
When the AdBlue ®
supply sinks to a minimum
level, the Remaining Starts: 20 message
is shown in the multifunction display.
i When the Remaining Starts: 20
message is shown in the multifunction
display, you can start the engine 20 more
times. If AdBlue ®
is not topped up, it is then
not possible to start the engine again. Top
up the AdBlue ®
tank with approximately
1 gallon (3.8 l) of AdBlue ®
or have the
AdBlue ®
tank refilled at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center.
Use the special AdBlue ®
refill bottle when
adding between maintenance intervals. For
more information, please contact an
authorized Mercedes-Benz Center or
Roadside Assistance if applicable
( Y page 20).
Further information about BlueTEC exhaust
gas aftertreatment and AdBlue ®
is available
at any authorized Mercedes-Benz Center.
Adding AdBlue ®GWarning!
Make sure
R AdBlue ®
does not come into contact with
skin, eyes, or clothing
R to keep AdBlue ®
out of the reach of children
If you and/or others have come into contact
with AdBlue ®
:
R If AdBlue ®
has gotten into contact with
eyes, flush with plenty of water immediately
and seek medical help.
R Clean affected skin immediately with plenty
of water.
R If AdBlue ®
was swallowed, rinse mouth
immediately with plenty of water and drink
plenty of water. Consult a physician.
GWarning!
When opening the filler cap of the AdBlue ®
tank ammonia gas vapors may escape. Refill
AdBlue ®
in a well ventilated area only.
Ammonia gas vapors have a pungent odor and
are particularly irritating for your skin,
mucous membranes, and eyes. Inhaling
ammonia gas vapors will cause burning eyes,
nose, and throat, as well as coughing and
watering eyes.
! Only use AdBlue ®
that complies with
ISO 22241. Do not add any special
additives to AdBlue ®
and do not thin
AdBlue ®
with water. This could destroy the
BlueTEC exhaust gas aftertreatment.
! Rinse surfaces that have come into
contact with AdBlue ®
immediately with
water or remove AdBlue ®
using a damp
cloth and cold water. If the AdBlue ®
has
already crystallized, use a sponge and cold
water to clean it. AdBlue ®
residues
crystallize after time and contaminate the
affected surfaces.
25 Only on BlueTEC vehicles.156RefuelingDriving and parking
BA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 156

! AdBlue ®
is not a additive and must not be
added to the diesel tank. If AdBlue ®
is
added to the diesel tank this could damage
the engine.
i If you are adding between maintenance
intervals, add approximately 1 gallon (3.8 l)
of AdBlue ®
to the AdBlue ®
tank. 1 gallon
(3.8 l) of AdBlue ®
is approximately
2 AdBlue ®
refill bottles.
Further information about
AdBlue ®
(Y page 360).
The AdBlue ®
filler neck is under the luggage
compartment floor.XSwitch off the ignition.XOpen the tailgate.XLift the luggage compartment floor
( Y page 298).XTurn AdBlue ®
cap : anti-clockwise and
remove it.XTurn AdBlue ®
filler cap ; anti-clockwise
and open it.
Filler cap ; is secured with a plastic strap.XUnscrew the covering cap from AdBlue ®
refill bottle =.XPlace AdBlue ®
refill bottle = on the filler
neck as shown and screw on clockwise
hand-tight.
! Only screw on the AdBlue ®
refill bottle
hand-tight. It could otherwise be damaged.
XPress AdBlue ®
refill bottle = down.
The AdBlue ®
tank is filled. This may take up
to one minute.
i If the AdBlue ®
refill bottle is no longer
pressed down, the filling process stops and
the partially emptied bottle can be
removed.
XRelease AdBlue ®
refill bottle =.XTurn AdBlue ®
refill bottle = anti-clockwise
and remove it.XPlace AdBlue ®
filler cap ; on the filler
neck and turn it clockwise.Refueling157Driving and parkingBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 157Z

XInsert AdBlue®
cap : as shown and turn
it clockwise as far as it will go.XFold the load compartment floor down.XClose the tailgate.XDrive at a speed above 10 mph (16 km/h).
The Check Additive – See
Operator's Manual disappears after
approximately one minute.
i If the Check Additive – See
Operator's Manual is still displayed in
the multifunction display, top up with
another bottle of AdBlue ®
.
i Then, have the AdBlue ®
supply checked
and filled completely if necessary.
Mercedes-Benz recommends that you use
a qualified specialist workshop such as an
authorized Mercedes-Benz Center for this
purpose.
Parking
Important safety guidelines
GWarning!
Do not park this vehicle in areas where
combustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system. These materials could be
ignited and cause a vehicle fire.
Vehicle movement may result in serious
personal injury or damage to the vehicle or
vehicle drivetrain. Therefore, always do the
following before turning off the engine and
leaving the vehicle:
R Keep right foot on the brake pedal.
R Engage the parking brake.
R Shift the automatic transmission into park
position P.
R Slowly release the brake pedal.
R When parked on an incline, always turn the
front wheels towards the road curb.
R Turn the SmartKey in the starter switch to
position 0 and remove the SmartKey from
the starter switch, or press the KEYLESS-
GO start/stop button.
R Take the SmartKey with you and lock the
vehicle when leaving.
Switching off the engine
Important safety instructions
GWarning
Do not turn off the engine before the vehicle
has come to a complete stop. With the engine
not running, there is no power assistance for
the brake and steering systems. In this case,
it is important to keep in mind that a
considerably higher degree of effort is
necessary to brake and steer the vehicle.
i If you cannot turn off the engine as
described here, see "Emergency engine
shut down" ( Y page 322).
Vehicles with automatic transmission
GWarning!
Keep in mind that turning off the engine alone
only will shift the automatic transmission into
neutral position N automatically.
Always shift the automatic transmission into
park position P before turning off the engine.
Otherwise the vehicle could roll away which
could result in an accident and/or serious
personal injury.
XShift the transmission to position P.
Using the SmartKey
XTurn the SmartKey to position 0 in the
ignition lock and remove it.
The immobilizer is activated.XApply the parking brake firmly.
i If you turn off the engine with the
SmartKey and then remove it from the
ignition lock or open a front door, the
automatic transmission switches to P
automatically.
158ParkingDriving and parking
BA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 158

Using KEYLESS-GOXPress the Start/Stop button (Y page 139).
When the driver's door is closed, the Start/
Stop button is in position 1. When the
driver's door is opened, the Start/Stop
button moves to position 0. This
corresponds to removing the SmartKey.XApply the parking brake firmly.
i If you turn off the engine with the Start/
Stop button and open a front door, the
automatic transmission switches to P
automatically.
i The engine can be turned off while the
vehicle is in motion by pressing and holding
the Start/Stop button for three seconds.
If you have started the engine with the Start/
Stop button and it cannot be switched off as
described:
Xremove the Start/Stop button from the
ignition lock.Xinsert the SmartKey into the ignition lock.
The engine stops. The ignition lock is in
position 0.
Parking brake
GWarning
Engaging the parking brake while the vehicle
is in motion can cause the rear wheels to lock
up. You could lose control of the vehicle and
cause an accident. In addition, the vehicle's
brake lights do not light up when the parking
brake is engaged.
GWarning!
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it with
you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Children could
release the parking brake and/or shift the
automatic transmission out of park position
P , either of which could result in an accident
and/or serious personal injury.
XTo apply: depress parking brake ; firmly.
When the engine is running, the $ (USA
only) or J (Canada only) indicator lamp
lights up in the instrument cluster.XTo release: depress the brake pedal and
keep it depressed.XPull release handle :.
When the ignition is switched on or the
engine is running, the $ (USA only) or
J (Canada only) indicator lamp goes out
in the instrument cluster.
Parking up the vehicle
If you leave the vehicle parked up for longer
than four weeks, the battery may be damaged
by exhaustive discharge.
XDisconnect the battery or connect it to a
trickle charger.
i You can obtain information about trickle
chargers from a qualified specialist
workshop, e.g. an authorized Mercedes-
Benz Center.
If you leave the vehicle parked up for longer
than six weeks, the vehicle may suffer
damage as a result of lack of use.
XVisit a qualified specialist workshop and
seek advice.Parking159Driving and parkingBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 159Z