Page 74 of 376

74 Safety and SecurityDriving safety systemsEmergency brake maneuver
Keep continuous full pressure on the 
brake pedal.
For more information, see “Practical hints” 
(
page 258).
BAS
The Brake Assist System (BAS) operates in 
emergency situations. If you apply the 
brakes very quickly, the BAS automatically 
provides full brake boost, thereby poten-
tially reducing the braking distance. Apply 
continuous full braking pressure until the 
emergency braking situation is over. The 
ABS will prevent the wheels from locking.
When you release the brake pedal, the 
brakes function again as normal. The BAS 
is then deactivated.
For more information, see “BAS” 
(page 265).
Warning!
G
The ABS cannot prevent the natural laws of 
physics from acting on the vehicle, nor can 
it increase braking or steering efficiency be-
yond that afforded by the condition of the 
vehicle brakes and tires or the traction. The 
ABS cannot prevent accidents, including 
those resulting from excessive speed in 
turns, following another vehicle too closely, 
or hydroplaning. Only a safe, attentive, and 
skillful driver can prevent accidents. The ca-
pabilities of an ABS equipped vehicle must 
never be exploited in a reckless or danger-
ous manner which could jeopardize the us-
er’s safety or the safety of others.
Warning!
G
The BAS cannot prevent the natural laws of 
physics from acting on the vehicle, nor can 
it increase braking efficiency beyond that af-
forded by the condition of the vehicle brakes 
and tires or the traction. The BAS cannot 
prevent accidents, including those resulting 
from excessive speed in turns, following an-
other vehicle too closely, or hydroplaning. 
Only a safe, attentive, and skillful driver can 
prevent accidents. The capabilities of a BAS 
equipped vehicle must never be exploited in 
a reckless or dangerous manner which 
could jeopardize the user’s safety or the 
safety of others. 
     
        
        Page 194 of 376

194 Controls in detailDriving systems
Driving systemsThe driving system of your vehicle is de-
scribed on the following pages:
Cruise control, with which the vehicle 
can maintain a preset speed
For information on the BAS, ABS and ESP 
driving systems, see “Driving safety sys-
tems” (
page 73).
Cruise control
Cruise control automatically maintains the 
speed you set for your vehicle.
Use of cruise control is recommended for 
driving at a constant speed for extended 
periods of time. You can set or resume 
cruise control at any speed over 20 mph 
(30 km/h). 
The cruise control function is operated by 
means of the cruise control lever.
The cruise control lever is the uppermost 
lever found on the left-hand side of the 
steering column.
Warning!
G
Cruise control is a convenience system de-
signed to assist the driver during vehicle op-
eration. The driver is and must remain at all 
times responsible for the vehicle speed and 
for safe brake operation.
Only use cruise control if the road, the traffic 
and weather conditions make it advisable to 
travel at a steady speed.
The use of cruise control can be danger-
ous on winding roads or in heavy traffic 
because conditions do not allow safe 
driving at a steady speed.
The use of cruise control can be danger-
ous on slippery roads. Rapid changes in 
tire traction can result in wheel spin and 
loss of control.
Deactivate cruise control when driving 
in fog.
The “Resume” function should only be oper-
ated if the driver is fully aware of the previ-
ously set speed and wishes to resume this 
particular preset speed. 
     
        
        Page 268 of 376
268 Practical hintsWhat to do if …Symbol messagesDisplay symbol
Display message
Possible cause
Possible solution
-
ABS SYSTEM
VISIT WORKSHOP!
The ABS has detected a malfunction and 
has switched off. The ESP and the BAS 
are also deactivated.
The brake system is still functioning 
normally but without the ABS available.
Continue driving with added caution. 
Wheels may lock during hard braking, 
reducing steering capability.
Have the system checked at an 
authorized Mercedes-Benz Center as 
soon as possible.
Failure to follow these instructions 
increases the risk of an accident.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The ABS or the ABS display is 
malfunctioning.
Continue driving with added caution. 
Wheels may lock during hard braking, 
reducing steering capability.
Have the system checked at an 
authorized Mercedes-Benz Center as 
soon as possible.
Failure to follow these instructions 
increases the risk of an accident. 
     
        
        Page 341 of 376

341 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up 
during braking so that the vehicle can 
continue to be steered.
Alignment bolt
Metal pin with thread. The centering 
pin is an aid used when changing a tire 
to align the wheel with the wheel hub.
BabySmart
TM airbag deactivation 
system
This system detects if a special system 
compatible child restraint seat is in-
stalled on the front passenger seat. The 
system will automatically deactivate 
the passenger front airbag when such a 
seat is properly installed (indicator 
lamp PASS. AIRBAG OFF in the center 
console comes on). See your autho-
rized Mercedes-Benz Center for avail-
ability.BabySmart
TM compatible child seats
Special restraint system for children. 
The sensor system for the passenger 
seat prevents deployment of the pas-
senger front airbag if a BabySmart
TM 
compatible child seat is installed.
BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking 
distances in emergency braking situa-
tions. The system is activated when it 
senses an emergency based on how 
fast the brake is applied.
Bi-Xenon headlamps*
Headlamps which use an electric arc as 
the light source and produce a more in-
tense light than filament headlamps. 
Bi-Xenon headlamps produce low 
beam and high beam.CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide 
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or 
windshield wiping.
Cockpit
All instruments, switches, buttons and 
indicator/warning lamps in the passen-
ger compartment needed for vehicle 
operation and monitoring.