Page 87 of 341

84 Rear view mirrors
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Note:
The exterior mirrors have electrically heated glass. The
heater switches on automatically, depending on outside
temperature.
If an exterior mirror housing is forcibly pivoted from its
normal position, it must be repositioned by applying
firm pressure until it snaps into place.Important!
Electrolyte drops coming into contact with the vehicle
paint finish can only be completely removed while in
their liquid state, by applying plenty of water.
Storing mirror positions in memory
The exterior rear view mirror positions are stored in
memory with the seat / head restraint / steering column
position and can be recalled when necessary, see
page 50.
Wa r n i n g !
In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.Electrolyte has an irritating effect. Do not allow the
liquid come into contact with eyes, skin, clothing,
or respiratory system. In cases it does, immediately
flush affected area with water, and seek medical
help if necessary.
Page 194 of 341

191 Steering lock
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data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Important!
If the electronic key is left in the steering lock position 0
for an extended period of time, it can no longer be
turned in the lock. In this case, remove electronic key
from steering lock and reinsert.
Caution!
To prevent accelerated battery discharge and a possible
dead battery, always remove the electronic key from the
steering lock. Do not leave the electronic key in steering
lock position 0.Notes:
A warning sounds when the driver’s door is opened
while the electronic key is in steering lock position 1
or 0.
With the engine at idle speed, the charging rate of the
alternator (output) is limited.
It is therefore recommended that you turn off
unnecessary electrical consumers while driving in
stop-and-go traffic. This precaution helps to avoid
draining of the battery.
Unnecessary strain on the battery and charging system
may be minimized by turning off the following power
consumers, for example:
Heated seats, rear window defroster. In addition, the
automatic climate air volume control should be set to
the lowest position.
The steering lock can only be unlocked with the vehicle
battery properly charged and connected.
Page 333 of 341

330 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Parking lamps ..................................................288, 289
Replacing bulbs .........................................................285
Side marker lamp, front ...........................................290
Standing lamps ................................................. 288, 289
Taillamp assemblies .................................................289
Turn signal lamps ............................................ 288, 289
FFirst aid kit .....................................................................254
Flexible service system (FSS) .......................................114
Four wheel electronic traction system
(4MATIC) with Electronic Stability
Program (ESP) ........................................................... 219
Fuel ..................................................................................229
Gasoline Additives ....................................................322
Premium unleaded gasoline ..................229, 319, 321
Fuel cap placement warning ........................................236
Fuel Requirements ........................................................ 321
Fuel reserve warning ....................................................236
Fuels, coolants, lubricants etc. - capacities ............... 318
Fuses, electrical .............................................................255
GGarage door opener ....................................................... 171
Gasoline
Additives .................................................................... 322
Fuel Requirements ...................................................321
Premium unleaded .................................................. 229
General notes on the
central locking system ............................................... 28
Glove box ......................................................................... 163HHazard warning flasher switch ................................... 125
Head restraints
Front seat .....................................................................52
Rear seat ....................................................................... 53
Synchronizing ............................................................. 48
Headlamp cleaning system ........................................... 121
Headlights ....................................................................... 122
Heated seats ......................................................................55
Hood ................................................................................ 257