Page 400 of 585

399 Operation
Winter driving
Winter driving
Before the onset of winter, have your
vehicle winterized at an authorized
Mercedes-Benz Light Truck Center. This
service includes:
Check of anticorrosion and antifreeze
concentration.
Addition of cleaning concentrate to the
water of the windshield and headlamp
cleaning system. Add MB Concentrate
“MB SummerFit” to a premixed wind-
shield washer solvent/antifreeze
which is formulated for temperatures
below freezing point (
page 551).
Battery test. Battery capacity drops
with decreasing ambient temperature.
A well charged battery helps to make
sure that the engine can be started
even at low ambient temperatures.
Tire change. Mercedes-Benz recom-
mends M+S rated radial-ply tires with a
minimum tread depth of approximately 1/6in (4 mm) on all four wheels for the
winter season.
Winter tires
Always use winter tires at temperatures
below 45°F (7°C) and whenever wintry
road conditions prevail. Not all M+S rated
tires provide special winter performance.
Make sure the tires you use show the
mountain/snowflake.marking on the
tire sidewall. These tires meet specific
snow traction performance requirements
of the Rubber Manufacturers Association
(RMA) and The Rubber Association of Can-
ada (RAC) and have been designed specif-
ically for use in snow conditions. Use of
winter tires is the only way to achieve the
maximum effectiveness of the ABS, ESP
®,
4-ETS, and EBP in winter operation.
For safe handling, make sure all mounted
winter tires are of the same make and have
the same tread design.Always observe the speed rating of the
winter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your
vehicle, you must place a notice to this
effect where it will be seen by the driver.
Such notices are available from your tire
dealer or from any authorized
Mercedes-Benz Light Truck Center.
Warning!
G
Winter tires with a tread depth under
1/6in
(4 mm) must be replaced. They are no long-
er suitable for winter operation.
Page 465 of 585
464 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
L
Tele Aid
inoperative
One or more main functions of the
Tele Aid* system are malfunctioning.
Have the Tele Aid* system checked
by an authorized Mercedes-Benz Light
Truck Center.
Tele Aid
battery
The emergency power battery for the
Tele Aid* system is malfunctioning. If the
vehicle battery is also malfunctioning or
drained, Tele Aid* will not be operational.
Have the Tele Aid* system checked
by an authorized Mercedes-Benz Light
Truck Center.
t
Function
unavailable
This display appears if buttont
ors on the multifunction steering
wheel is pressed and the vehicle is not
equipped with a telephone.
W
Top up
washer fluid
The fluid level has dropped to about
1/3 of
total reservoir capacity.
Add washer fluid (
page 363).
Page 509 of 585

508 Practical hintsBattery!
The battery is a valve-regulated lead acid
(VRLA) battery, also referred to as “fleece” bat-
tery. Such batteries do not require topping-up of
the electrolyte level. VRLA batteries therefore do
not have cell caps and the battery cover is
non-removable. Do not attempt to open the bat-
tery as otherwise the battery will be damaged.
Even though VRLA batteries do not require top-
ping-up of the electrolyte level and cannot be
opened to check the electrolyte level, the bat-
tery condition must be checked periodically by
performing a battery conductance test. Refer to
Maintenance Booklet for battery condition test-
ing intervals.
As with any other battery, the battery may dis-
charge if the vehicle is not operated for an ex-
tended period of time. You can connect a battery
maintenance charge unit tested and approved
for use on your vehicle model or disconnect the
battery to prevent battery discharge. Contact an
authorized Mercedes-Benz Light Truck Center
for more information.
!
The factory-equipped VRLA battery is
leak-proofed. Only use a battery as replacement
that has the same security features and is of
identical size, voltage, and capacity as the
factory-equipped battery.
The battery, the battery ventilation hose
(
page 513) and the lateral plug (
page 513)
must always be securely installed when the
vehicle is in operation.
Warning!
G
Jump starting must only be done using the
jump-start contacts located in the engine
compartment (
page 515).
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 507).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking etc.
Page 571 of 585

570 IndexSeat belts 77
Children in the vehicle 82
Cleaning 412
Fastening 51
Height adjustment 53
Messages in the
multifunction display 421, 422
Proper use of 53, 78
Safety guidelines 73
Telltale 29, 77, 421
Warning lamp 422
Seat cushion depth see Seats
Seat heating* see Seats
Seat ventilation* see Seats
Seating capacity 370
Seats 43, 128
Adjusting 43
Cushion depth, Multicontour
seat* 130
Folding the backrest forward 284
Heating* 131
Lumbar support 130
Memory function* 134
Multicontour seat* 130
Returning seat backrest to original
position 286Ventilation* 132
Securing cargo 283
Cargo tie-down rings 283
Hooks 284
Selector lever see Gear selector lever
Self-test
Lamps in the instrument cluster 414
OCS 90
Tele Aid* 309
Vehicle battery 507
Service and warranty information 10
Service intervals see Maintenance, Service
indicator
Service life
Tires 366
Service see Maintenance
Service system see FSS PLUS
(Canada vehicles) or
Maintenance System (US vehicles)
Service, Parts 528Settings
Adaptive Damping System
(ADS)* 269
Air suspension* 269
Clock 169
Comfort functions* 177
Control system menus 150, 152
Control system submenus 151, 153,
166
Date 153, 166, 169
Daytime running lamp mode 171
Factory, SmartKey 109
Factory, SmartKey with
KEYLESS-GO* 115
Individual, Vehicle 164
Instrument cluster 167
Language, multifunction display 167,
168
Lighting 171
Memory function* 135
Resetting all, Control system 165
Selective, SmartKey 110
Selective, SmartKey with
KEYLESS-GO* 115
Time 169
Vehicle configuration 178