2012 MERCEDES-BENZ B-CLASS immobilizer

Important safety notes ..................
266
Opening ......................................... 266
Hydroplaning ..................................... 156I
Ignition lock see Key positions

Immobilizer .......................................... 64
Indicator lamps see Warning and indicator lamps
Instrument cluster
Overview .......................................... 29
Settings ......................................... 196
Warning and indicator lamps ...........30
Instrument cluster lighting .............. 186
Interior lighting ................................. 103
Automatic control .......................... 104
Delayed switch-off (on-board
computer) ...................................... 198
Emergency lighting ........................ 104
Manual control ............................... 104
Overview ........................................ 103
Reading lamp ................................. 103
Setting the brightness of the
ambient lighting (on-board
computer) ...................................... 197J
Jack Storage location ............................ 280
Using ............................................. 320
Jump starting (engine) ...................... 289K
Kickdown Driving tips .................................... 143
Manual drive program .................... 146
Knee bag .............................................. 44 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating

.................195
Display message ............................ 215
Function/information .................... 183
Lane Tracking package .....................181
LATCH-type (ISOFIX) child seat
anchors ................................................ 54
License plate lamp Changing bulbs .............................. 111
License plate lamp (display
message) ............................................ 210
Light function, active Display message ............................ 211
Lighting
Light switch ..................................... 98
Lights
Activating/deactivating the
interior lighting delayed switch-off . 198
Automatic headlamp mode .............. 99
Cornering light function .................101
Display message ............................ 208
Driving abroad ................................. 98
Fog lamps ........................................ 99
Fog lamps (extended) ....................102
Hazard warning lamps ................... 101
High beam flasher .......................... 101
High-beam headlamps ...................100
Low-beam headlamps ...................... 99
Parking lamps ................................ 100
Rear fog lamp ................................ 100
Setting the brightness of the
ambient lighting (on-board
computer) ...................................... 197
Standing lamps .............................. 100
Switching Adaptive Highbeam
Assist on/off ................................. 197
Switching the daytime running
lamps on/off (on-board computer) 197
Switching the daytime running
lamps on/off (switch) ...................... 99
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 198 Index
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Temperature
Coolant .......................................... 186
Outside temperature ...................... 187 Setting (climate control)
................125
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........65
Immobilizer ...................................... 64
Through-loading ................................ 239
Time see separate operating instructions
TIREFIT kit .......................................... 282
Tire pressure Checking manually ........................305
Display message ............................ 219
Maximum ....................................... 304
Notes ............................................. 303
Not reached (TIREFIT) .................... 284
Reached (TIREFIT) .......................... 284
Recommended ............................... 301
Tire pressure loss warning
system
Important safety notes .................. 305
Restarting ...................................... 305
Tires
Aspect ratio (definition) ................. 318
Average weight of the vehicle
occupants (definition) .................... 316
Bar (definition) ............................... 316
Changing a wheel .......................... 319
Characteristics .............................. 316
Checking ........................................ 299
Definition of terms ......................... 316
Direction of rotation ......................319
Display message ............................ 219
Distribution of the vehicle
occupants (definition) .................... 318
DOT, Tire Identification Number
(TIN) ............................................... 315
DOT (Department of
Transportation) (definition) ............ 316
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 317
GVW (Gross Vehicle Weight)
(definition) ..................................... 317
GVWR (Gross Vehicle Weight
Rating) (definition) .........................317
Important safety notes .................. 298Increased vehicle weight due to
optional equipment (definition)
......316
Kilopascal (kPa) (definition)
...........317
Labeling (overview) ........................ 312
Load bearing index (definition) ...... 318
Load index ..................................... 315
Load index (definition) ...................317
M+S tires ....................................... 300
Maximum loaded vehicle weight
(definition) ..................................... 317
Maximum load on a tire (definition) 317
Maximum permissible tire
pressure (definition) ....................... 317
Maximum tire load ......................... 310
Maximum tire load (definition) .......317
MOExtended tires .......................... 300
Optional equipment weight
(definition) ..................................... 318
PSI (pounds per square inch)
(definition) ..................................... 317
Replacing ....................................... 319
Service life ..................................... 300
Sidewall (definition) .......................318
Speed rating (definition) ................ 317
Storing ........................................... 319
Structure and characteristics
(definition) ..................................... 316
Summer tires ......................... 157, 300
Temperature .................................. 312
TIN (Tire Identification Number)
(definition) ..................................... 318
Tire bead (definition) ......................318
Tire pressure (definition) ................ 318
Tire pressures (recommended) ...... 316
Tire size (data) ............................... 323
Tire size designation, load-bearing
capacity, speed rating .................... 313
Tire tread ....................................... 299
Tire tread (definition) .....................318
Total load limit (definition) ............. 318
Traction ......................................... 311
Traction (definition) ....................... 318
Tread wear ..................................... 311
Uniform Tire Quality Grading
Standards ...................................... 311
Uniform Tire Quality Grading
Standards (definition) .................... 316
Unladen weight (definition) ............ 317 Index
17
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Characteristics when ESP
®
is deactivated
If ESP ®
is deactivated and one or more wheels
start to spin, the ÷ ESP®
warning lamp in
the instrument cluster flashes. In such
situations, ESP ®
will not stabilize the vehicle.
If you deactivate ESP ®
:
R ESP ®
no longer improves driving stability.
R the engine's torque is no longer limited and
the drive wheels are able to spin. The
spinning of the wheels results in a cutting
action, which provides better grip.
R ETS is still active.
R ESP ®
still provides support when you
brake. EBD (electronic brake force
distribution)
i Observe the "Important safety notes"
section for driving safety systems
(Y page 59). G
WARNING
If EBD has malfunctioned, the rear wheels can
still lock, e.g. under full braking. This
increases the risk

of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have
the brake system checked at a qualified
specialist workshop.
Observe information regarding indicator and
warning lamps ( Y page 225) as well as
display messages ( Y page 203).
EBD monitors and controls the brake
pressure on the rear wheels to improve
driving stability while braking. ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety
and offers increased braking comfort. In
addition to the braking function, ADAPTIVE
BRAKE also has the HOLD function
(Y page 168) and hill start assist (Y page 136). For further information, see
Driving tips (Y page 154).
STEER CONTROL
STEER CONTROL helps

you by transmitting a
noticeable steering force to the steering
wheel in the direction required for vehicle
stabilization.
This steering assistance is provided in
particular if:
R both right wheels or both left wheels are on
a wet or slippery road surface when you
brake
R the vehicle starts to skid
If ESP ®
is malfunctioning, you will not receive
steering support from STEER CONTROL.
Power steering will, however, continue to
function. Theft deterrent locking system
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
X To activate: remove the SmartKey from
the ignition lock.
X To deactivate: switch on the ignition.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
i The immobilizer is always deactivated
when you start the engine.
In the event that the engine cannot be
started when the starter battery is fully
charged, the immobilizer may be faulty.
Contact an authorized Mercedes-Benz
Center or call

1-800-FOR-MERCedes (in the
USA) or 1-800-387-0100 (in Canada). 64
Theft deterrent locking system
Safety
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To ensure that the vehicle is secured against
rolling away unintentionally:
R
the electric parking
brake must be applied.
R the transmission must be in position P and
the transmission position display must
show P.
R the SmartKey must be removed from the
ignition lock.
R on uphill or downhill gradients, the front
wheels must be turned towards the curb. Switching off the engine
Important safety notes G
WARNING
The automatic transmission switches to
neutral position N when you switch off the
engine. The vehicle may roll away. There is a
risk of an accident.
After switching off the engine, always switch
to parking position P. Prevent the parked
vehicle from rolling away by applying the
parking brake.
Vehicles with automatic transmission X
Apply the electric parking brake.
X Shift the transmission to position P.
X Turn the SmartKey to position 0 in the
ignition lock and remove it.
The immobilizer is activated.
i If you switch the engine off with the
transmission in position R or D, the
automatic transmission shifts to N
automatically.
If you then open one of the front doors or
remove the SmartKey

from the ignition, the
automatic transmission shifts to P.
If you shift the automatic transmission to
N before switching off the engine, the
automatic transmission remains in N even
if a door is opened. i
The automatic transmission shifts to P
automatically if you:
R switch off the

engine using the SmartKey
and remove the SmartKey from the
ignition lock or
R switch off the engine using the SmartKey
and open a front door.
If you attempt to turn off the engine when the
selector lever is not in position P:
R a message appears in the multifunction
display
R a warning signal sounds Electric parking brake
General notes G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine.
They could also operate the vehicle's
equipment. There is

a risk of an accident and
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle. i
The electric parking brake performs a
function test at regular intervals while the 150
Parking
Driving and parking
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