wheel torque MERCEDES-BENZ M-Class 2015 W166 Owner's Manual

Wheel and tire combination
see Tires
Wheel bolt tightening torque ........... 428
Wheel chock ...................................... 424
Wheels Changing a wheel .......................... 423
Checking ........................................ 401
Cleaning ......................................... 374
Cleaning (warning) ........................ .424
Emergency spare wheel ................. 440
Important safety notes .................. 400
Interchanging/changing ................ 423
Mounting a new wheel ................... 427
Mounting a wheel .......................... 424
Overview ........................................ 400
Removing a wheel .......................... 427
Storing .......................................... .424
Tightening torque ........................... 428
Wheel size/tire size ....................... 428
Window curtain air bag
Display message ............................ 294
Operation ......................................... 52
Windows
see Side windows
Windshield
Defrosting ...................................... 149
Infrared reflective .......................... 364
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 370
Notes ............................................. 454
Windshield wipers
Problem (malfunction) ................... 136
Rear window wiper ........................ 133
Replacing the wiper blades ............ 133
Switching on/off ........................... 132
Winter driving
Slippery road surfaces ................... 190
Snow chains .................................. 403
Winter operation
General notes ................................ 402
Overview ........................................ 402
Radiator cover ............................... 367
Snow drive program ....................... 248
Winter tires
M+S tires ....................................... 402 Wiper blades
Cleaning ......................................... 375
Important safety notes .................. 133
Replacing ....................................... 133
Replacing (rear window) ................ 134
Replacing (windshield )................... 134
Wooden trim (cleaning instruc-
tions) .................................................. 378
Workshop see Qualified specialist workshop Z
ZONE function Switching on/of f........................... 149 Index
23

Should you approach an obstacle and Adap-
tive Brake Assist has detected a risk of colli-
sion, Adaptive Brake Assist calculates the
braking force necessary to avoid a rear-end
collision. Should you apply the brakes vigo-
rously, Adaptive Brake Assist will automati-
cally increase the braking force to a level suit- able for the traffic conditions.
X Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if:
R you release the brake pedal.
R there is no longer any danger of a collision.
R no obstacle is detected in front of your
vehicle.
Adaptive Brake Assist is then deactivated.
Vehicles with PRE-SAFE ®
:if adaptive Brake
Assist requires particularly high brake pres-
sure, preventive passenger protection meas-
ures (PRE-SAFE ®
) are deployed simultane-
ously.
Up to vehicle speeds of around 155 mph
(250 km/h), adaptive Brake Assist is capable
of reacting to moving objects that have
already been recognized as such at least once
over the period of observation. Adaptive
Brake Assist does not react to stationary
obstacles.
If Adaptive Brake Assist is not available due to
a malfunction in the radar sensor system, the brake system remains available with full
brake boosting effect and BAS.
In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensors or anything else cover-
ing the sensors
R there is snow or heavy rain
R there is interference by other radar sources
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle traveling in front, e.g. a
motorbike R
a vehicle traveling in front on a different line
relative to the center of your vehicle
R new vehicles or after the COLLISION PRE-
VENTION ASSIST system has been serv-
iced
Observe the notes in the section on break- ing-in (Y page 156).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at low speeds where there is no visible
damage to the front of the vehicle. ESP
®
(Electronic Stability Program)
General notes i
Observe the "Important safety notes" sec-
tion (Y page 67).
ESP ®
monitors driving stability and traction,
i.e. power transmission between the tires and
the road surface.
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. The engine output is also modified to keep the vehicle on the desired course within
physical limits. ESP ®
assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilize the vehicle during braking.
ETS/4ETS (Electronic Traction System) ETS/4ETS traction control is part of ESP
®
.
Traction control brakes the drive wheels indi- vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP ®
.
In appropriate driving situations, activate the
off-road program (Y page 251).72
Driving safety systemsSafety

It may be best to deactivate ESP
®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel
i Activate ESP ®
as soon as the situations
described above no longer apply. ESP ®
will
otherwise not be able to stabilize the vehi-
cle if the vehicle starts to skid or a wheel
starts to spin.
! Avoid spinning the driven wheels for an
extended period with ESP ®
deactivated.
You could otherwise damage the drivetrain.
Deactivating/activating ESP ®X
To switch off: press button0043.
The 00BB ESP®
OFF warning lamp in the
instrument cluster lights up.
X To switch on: press button0043.
The 00BB ESP®
OFF warning lamp in the
instrument cluster goes out.
Characteristics when ESP ®
is deactivated
If ESP ®
is deactivated and one or more wheels
start to spin, the 00E5ESP®
warning lamp in
the instrument cluster flashes. In such situa-
tions, ESP ®
will not stabilize the vehicle.
If you deactivate ESP ®
:
R ESP ®
no longer improves driving stability.
R engine torque is no longer limited and the
drive wheels are able to spin. The spinning of the wheels results in a cut-
ting action for better traction on loose sur- faces.
R traction control is still activated.
R ESP ®
still provides support when you
brake.
Off-road ESP ®
(vehicles with Off-Road
Engineering package) An ESP
®
system specifically suited to off-road
terrain is activated automatically once the off-
road program is activated (Y page 251).
Off-road ESP ®
intervenes with a delay if there
is oversteering or understeering, thus improv-
ing traction.
ESP ®
trailer stabilization General information
ESP
®
trailer stabilization is not available in
AMG vehicles.
If your vehicle/trailer combination begins to
swerve, ESP ®
assists you in this situation.
ESP ®
slows the vehicle down by braking and
limiting the engine output until the vehicle/
trailer combination has stabilized.
Important safety notes G
WARNING
If road and weather conditions are poor,
trailer stabilization will not be able to prevent the vehicle/trailer combination from swerv-
ing. Trailers with a high center of gravity can
tip over before ESP ®
can detect this. There is
a risk of an accident.
Always adapt your driving style to the prevail- ing road and weather conditions.
If your vehicle with trailer (vehicle/trailer
combination) begins to lurch, you can only
stabilize the vehicle/trailer combination by
depressing the brake firmly.
Trailer stabilisation is active above speeds of
about 37 mph (60 km/h). 74
Driving safety systemsSafety

Off-road program 1
X
Selector wheel 0043
0043engaged: briefly press
selector wheel 0043.
Selector wheel 0043extends.
X To select: turn selector wheel 0043until indi-
cator lamp 0044comes on.
Off-road indicator 0087appears in the multi-
function display.
Off-road level 1 is set to +1.2 in (+30 mm)
above the vehicle's "highway" level.
Off-road program 1 switches to the AUTO
program if you drive faster than 70 mph
(110 km/h).
Select off-road program 1 for gentle off-road
terrain, e.g. for gravel or sand surfaces or
tracks. The engine's torque is restricted to a
limited degree and the drive wheels can spin.
The spinning wheels produce a cutting effect
for better traction.
You can only activate off-road program 1
when driving at speeds of 60 mph (100 km/h)
or below. The Drive Program OFFROAD 1
Drive Program OFFROAD 1
Max. Max. 60
60mph (
mph (100 100km/h)
km/h) message appears
in the multifunction display. Off-road program 2
X
Selector wheel 0043
0043engaged: briefly press
selector wheel 0043.
Selector wheel 0043extends.
X To select: turn selector wheel 0043until indi-
cator lamp 0044comes on.
Off-road indicator 0087appears in the multi-
function display.
R Off-road level 1 is set to +2.4 in (+60 mm)
above the vehicle's "highway" level.
R DSR is switched on.
R The differential lock is closed.
Off-road program 2 automatically switches to off-road program 1 if you drive faster than
30 mph (45 km/h).
Select off-road program 2 for rough terrain,
e.g. for steep and/or rough terrain or drivingon rocky terrain.
i Your vehicle has an automatically activa-
ted differential lock for the transfer case. It controls the balance between the front and
rear axles. 252
Driving systemsDriving and parking

The differential lock improves the vehicle's
traction. 4ETS (Y page 73) controls the bal-
ance between both wheels on an axle.
You can only activate off-road program 2
when driving at speeds of 25 mph (40 km/h)
or below.
LOW RANGE off-road gear (vehicles
with the ON&OFFROAD package) Important safety notes
G
WARNING
If you select the LOW RANGE off-road gear on a slippery road surface, the wheels could lose traction:
R if you remove your foot from the accelera-
tor pedal when driving
R if off road ABS intervenes when braking
If the wheels lose traction. the vehicle can no
longer be steered. There is an increased dan-
ger of skidding and accidents.
Never select the LOW RANGE off-road gear
when driving on slippery road surfaces. G
WARNING
If you do not wait for the transfer case gear
change process to complete, the transfer
case could remain in the neutral position. The power transmission to the driven wheels is
then interrupted. There is a danger of the
vehicle rolling away unintentionally. There is a
risk of an accident.
Wait until the transfer case shift process is
completed.
Do not turn off the engine while changing gear
and do not shift the automatic transmission
to another position. General notes 0043
LOW RANGE off-road gear button
0044 LOW RANGE off-road gear indicator lamp HIGH RANGE
Position for all normal on-
road driving conditions
LOW RANGE
Off-road position for driv-
ing off-road and fording
The transmission ratio
between the engine and
wheels is only approx-
imately one third of that in
the HIGH RANGE road
position. Drive torque is
thus proportionately
higher.
Do not use LOW RANGE:
R on slippery road surfa-
ces, e.g. in the case of
slush
R on snow or ice-covered
roads
R if you have mounted
snow chains to your
vehicle The LOW RANGE off-road gear assists you in
driving off-road and when fording. When LOW
RANGE is engaged, the engine’s performance
characteristics and the gearshifting charac-
teristics of the automatic transmission are
adapted for this purpose.
Further information about "Driving off-road"
(Y page 191). You will find information about
driving safety systems in conjunction with Driving systems
253Driving and parking Z

X
Clean the wheel and wheel hub contact
surfaces.
X Slide the wheel to be mounted onto the
alignment bolt and push it on.
X Tighten the wheel bolts until they are fin-
ger-tight.
X Unscrew the alignment bolt.
X Tighten the last wheel bolt until it is finger-
tight.
Lowering the vehicle G
WARNING
The wheels could work loose if the wheel nuts and bolts are not tightened to the specified
tightening torque. There is a risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed. X
Place the ratchet wrench onto the hexagon
nut of the jack so that the letters ABare
visible.
X Turn the ratchet wrench until the vehicle is
once again standing firmly on the ground.
X Place the jack to one side.
X Tighten the wheel bolts evenly in a cross-
wise pattern in the sequence indicated ( 0043
to 0083). The tightening torque must be
110 lb-ft (150 Nm).
X Turn the jack back to its initial position. X
Stow the jack and the rest of the tire-
change tool kit in the stowage well under
the cargo compartment floor again.
X Check the tire pressure of the newly moun-
ted wheel and adjust it if necessary.
Observe the recommended tire pressure
(Y page 404).
i Vehicles with tire pressure monitor: all
wheels mounted must be equipped with
functioning sensors. Wheel and tire combinations
General notes
! For safety reasons, Mercedes-Benz rec-
ommends that you only use tires and
wheels which have been approved by
Mercedes-Benz specifically for your vehi-
cle.
These tires have been specially adapted for
use with the control systems, such as ABS
or ESP ®
, and are marked as follows:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(tires featuring run-flat characteristics)
R MO1 = Mercedes-Benz Original (only cer-
tain AMG tires)
Mercedes-Benz Original Extended tires
may only be used on wheels that have been
specifically approved by Mercedes-Benz.
Only use tires, wheels or accessories tes-
ted and approved by Mercedes-Benz. Cer-
tain characteristics, e.g. handling, vehicle
noise emissions or fuel consumption, may
otherwise be adversely affected. In addi-
tion, when driving with a load, tire dimen-
sion variations could cause the tires to
come into contact with the bodywork and
axle components. This could result in dam- age to the tires or the vehicle.
Mercedes-Benz accepts no liability for
damage resulting from the use of tires,
wheels or accessories other than those tes-
ted and approved. 428
Wheel and tire combinationsWheels and tires

wheels accordingly. The rear wheel torque
is increased, making it easier to drive off.
For further information about the maximum
gradient climbing ability, see (Y page 195).Trailer tow hitch
Mounting dimensions
! If you have a trailer tow hitch retrofitted,
changes to the cooling system and drive
train may be necessary, depending on the
vehicle type.
If you have a trailer tow hitch retrofitted,
observe the anchorage points on the chas- sis frame. Anchorage points for the trailer tow hitch (exam-
ple)
0043 Anchorage points
0044 Rear axle center line Trailer tow hitch
459Technical data Z