Page 334 of 480
333 Practical hints
What to do if …
Problem
Possible cause/consequence
Suggested solution
-
The yellow ABS indicator lamp
comes on while driving.
The ABS has detected a malfunction and has
switched off. The BAS and the ESP
® are also
switched off (see messages in display).
The electro-hydraulic brake system is still
functioning normally but without ABS avail-
able.
If the ABS control unit is malfunctioning, oth-
er systems such as Parktronic*, Distronic*,
or the automatic transmission may also be
malfunctioning.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Failure to follow these instructions in-
creases the risk of an accident.
Read and observe messages in the
display (
page 345).
The charging voltage has fallen below
10 volts and the ABS was switched off.
The battery may not be sufficiently charged.
Switch off electrical consumers that
are currently not needed, e.g. seat
heating.
If necessary, have the generator and
battery checked.
When the voltage is above this value
again, the ABS is operational again.
Page 360 of 480
359 Practical hints
What to do if …
Symbol messagesLeft display
Right display
Possible cause/consequence
Possible solution
#
Battery/Alternator
Stop vehicle
The battery is malfunctioning.
The electro-hydraulic brake system
requires electrical energy and
therefore has only limited opera-
tion. Considerably greater brake
pedal force is required and the stop-
ping distance is increased.
Stop the vehicle in a safe location. Adjust driv-
ing to be consistent with reduced braking re-
sponsiveness.
Notify an authorized Mercedes-Benz Center.
Visit
workshop!
The battery is no longer charging.
Possible causes:
alternator malfunctioning
broken poly-V-belt
Do not forget that the brake system
requires electrical energy and may
be operating with restricted capa-
bility. Considerably greater brake
pedal force is required and the stop-
ping distance is increased.
Stop the vehicle immediately in a safe loca-
tion and check the poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise, the
engine will overheat due to an inoperative
water pump which may result in damage
to the engine. Notify an authorized
Mercedes-Benz Center.
If it is in order:
Drive immediately to the nearest autho-
rized Mercedes-Benz Center. Adjust driv-
ing to be consistent with reduced braking
responsiveness.
Page 418 of 480
417 Practical hints
Batteries
Removing the starter battery
Remove the screws securing the start-
er battery in the engine compartment.
Pull out the battery ventilation tube
from the battery.
Depending on battery arrangement in
your vehicle model, the ventilation tube
is located either on the left or right side
of the battery.
Lift the retaining bracket.
Remove the battery.
Charging and reinstalling batteries
Charge batteries in accordance with
the instructions of the battery charger
manufacturer.
Reinstall the charged batteries. Follow
the previously described steps in re-
verse order.
Warning!
G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the bat-
tery in its installed position. Contact an au-
thorized Mercedes-Benz Center for
information and availability. Charge battery
in accordance with the separate instruc-
tions for the accessory battery charger.
Page 463 of 480
462 IndexAutomatic transmission 162
Accelerator position 166
Comfort program mode 168
Emergency operation (Limp Home
Mode) 176
Gear ranges 167
Gear selector lever 30, 162
Gear selector lever position 162, 164
Gear shifting malfunctions 176
Kickdown 166
Manual shifting 169
One-touch gearshifting 169
Program mode selector switch 30,
168
Starting the engine 49
Transmission fluid level 277
Automatic Transmission Fluid see ATF
B
BabySmart
TM airbag deactivation
system 78, 453
BabySmartTM compatible child seats 453Backrest
Lumbar support 116
Multicontour seat* 116
Power seat 41
Shoulder region support 116
Backup lamp
Messages in the multifunction
display 377
Replacing bulb 392, 396
Bar 310
BAS 84, 453
Batteries, SmartKey
Checking battery condition 99
Replacing 389
Batteries, SmartKey with KEYLESS-GO*
Checking battery condition 106
Replacing 390
Batteries, Vehicle 279
Charging 417
Consumer battery 279, 384, 413
Jump starting 419
Messages in the multifunction
display 359
Starter battery 279, 413
Bead 310
Bi-Xenon headlamps* 392, 453Block heater (Canada only) 316
Brake Assist System see BAS
Brake lamps 392
High mounted 392
Messages in the multifunction
display 374, 375
Brake pads
Messages in the multifunction
display 360
Brake system
Messages in the multifunction
display 364
Brakes 258
BAS 84
Brake fluid 271, 445, 447
Electro-hydraulic brake system 88
High-performance brake system (SL 65
AMG only) 260
Warning lamp 334
Break-in period 256
Bulbs
Messages in the multifunction
display 374
Replacing 391