60 Safety and SecurityOccupant safetySafety guidelines for the seat belt, 
emergency tensioning device and 
airbagWarning!
G
Damaged seat belts or belts that were 
highly stressed in an accident must be 
replaced and their anchoring points 
must also be checked. Use only belts in-
stalled or supplied by an authorized 
Mercedes-Benz Center.
Airbags and emergency tensioning de-
vice (ETDs) are designed to function on 
a one-time only basis. An airbag or ETD 
that was activated must be replaced
No modifications of any kind may be 
made to any components or wiring of 
the SRS. This includes changing or re-
moving any component or part of the 
SRS, the installation of additional trim 
material, badges, etc. over the steering 
wheel hub, front passenger airbag cov-
er, door trim panels, or door frame 
trims, and installation of additional elec-
trical/electronic equipment on or near 
SRS components and wiring. Keep area 
between airbags and occupants free 
from objects (e.g. packages, purses, 
umbrellas, etc.).
Do not pass belts over sharp edges. 
They could tear.
Do not make any modification that could 
change the effectiveness of the belts.
Do  n o t h a ng i te ms  su ch  as  c o at  ha n ger s 
from the coat hooks or handles over the 
door. These items may turn into projec-
tiles and cause head and other injuries 
when curtain airbag is deployed.
An airbag system component within the 
steering wheel gets hot after the airbag 
has inflated. Do not touch.
Improper work on the system, including 
incorrect installation and removal, can 
lead to possible injury through an unin-
tended activation of the SRS.
In addition, through improper work 
there is a risk of rendering the SRS inop-
erative or causing unintended airbag de-
ployment. Work on the SRS must 
therefore only be performed by qualified 
technicians. Contact your authorized  
Mercedes-Benz Center.
For your protection and the protection 
of others, when scrapping the airbag 
unit or emergency tensioning device, 
our safety instructions must be fol-
lowed. These instructions are available 
from your authorized Mercedes-Benz 
Center.
Given the considerable deployment 
speed and the textile structure of the 
airbags, there is the possibility of abra-
sions or other injuries resulting from air-
bag deployment. 
229 Operation
Driving instructions
Road salts and chemicals can adversely af-
fect braking efficiency. Increased pedal 
force may become necessary to produce 
the normal braking effect.
Depressing the brake pedal periodically 
when traveling at length on salt-strewn 
roads can bring road-salt-impaired braking 
efficiency back to normal.
If the vehicle is parked after being driven 
on salt-treated roads, the braking efficien-
cy should be tested as soon as possible af-
ter driving is resumed.
For more information on winter driving, see 
“Winter driving” (
page 247).
Standing water
Warning!
G
Make sure not to endanger any other road 
users when carrying out these braking ma-
neuvers.
Warning!
G
If the vehicle becomes stuck in snow, make 
sure snow is kept clear of the exhaust pipe 
and from around the vehicle with the engine 
running. Otherwise, deadly carbon monox-
ide (CO) gases may enter vehicle interior re-
sulting in unconsciousness and death.
To assure sufficient fresh air ventilation, 
open a window slightly on the side of the ve-
hicle not facing the windWarning!
G
The outside temperature indicator is not de-
s i g n e d  t o  s e r v e  a s  a n  i c e - w a r n i n g  d e v i c e  a n d  
is therefore unsuitable for that purpose. In-
dicated temperatures just above the freez-
ing point do not guarantee that the road 
surface is free of ice.
!Do not drive through flooded areas or 
water of unknown depth. Before driving 
through water, determine its depth. 
Never accelerate before driving into 
water. The bow wave could force water 
into the engine and auxiliary equip-
ment, thus damaging them.
If you must drive through standing wa-
ter, drive slowly to prevent water from 
entering the passenger compartment 
or the engine compartment. Water in 
these areas could cause damage to 
electrical components or wiring of the 
engine or transmission, or could result 
in water being ingested by the engine 
through the air intake causing severe 
internal engine damage. Any such dam-
age is not covered by the 
Mercedes-Benz Limited Warranty.