Automatic transmission
emergency mode
...............................141
Auxiliary heating Activating/deactivating heater
booster mode ................................ 125
Conditions for switching on ...........119
Important safety notes ..................118
Operating with the button (control
panel) ............................................ 119
Operation with the remote control .121
Operation with the timer ................122
Problem (malfunction) ...................128
Selecting a switch-on time ............. 119
Setting the switch-on time .............120
see Auxiliary heating
Axle load, permissible (trailer
towing) ............................................... 329B
Backup lamps Changing bulbs ........................ 99, 101
Backup lamps (Chassis Cab)
Changing bulbs .............................. 100
BAS (Brake Assist System)
Display message ............................ 198
Function/notes ................................ 56
Indicator lamp ................................ 210
Basic settings
see Settings
Battery
Isolating switch .............................. 132
Replacing (SmartKey) ................66, 67
Battery (SmartKey)
Checking .......................................... 66
Important safety notes ....................66
Replacing ................................... 66, 67
Battery (vehicle)
Care ............................................... 255
Charge indicator lamp ...................214
Charging ........................................ 254
Disconnecting and connecting
(driver's footwell) ........................... 251
Disconnecting and connecting
(engine compartment) ...................253
Display message ............................ 208
Important safety notes ..................250Installing/removing (driver's
footwell) ......................................... 252
Installing/removing (engine
compartment)
................................ 254
Jump starting ................................. 267
Location ......................................... 250
Removing/installing the floor
covering (driver's footwell) ............251
Belt
see Seat belts
Bio-diesel ........................................... 317
Bleeding the fuel system ..................137
Bodies Body/equipment mounting
directives for trucks .........................28
Bottle holder ...................................... 227
see Cuph older
Brake
EBD .................................................. 57
Brake Assist System
see BAS (Brake Assist System)
Brake fluid
Checking the level .........................245
Display message ............................ 199
Notes .................................... .245, 324
Warning lamp ................................. 211
Brake force distribution,
electronic
see EBD (electronic brake force
distribution)
Brake lamps
Changing bulbs ........................ 99, 101
Brake lamps (Chassis Cab)
Changing bulbs .............................. 100
Brake linings
Display message ............................ 199
Indicator lamp ................................ 214
Brakes
ABS .................................................. 56
Applying the parking brake ............146
BAS .................................................. 56
Brake fluid (notes) .................245, 324
Checking brake fluid leve l.............. 245
Display messages ..........................199
Driving tips .................................... 150
Important safety notes ..................150
Maintenance .................................. 210
Parking brake (notes) ..................... 151 Index
5
Problem Possible causes/consequences and
0004 Solutions
The auxiliary heating
switches off
automatically and/or
cannot be switched on. The low-voltage protection system integrated in the control unit
switches off the auxiliary heating because the on-board voltage is
less than 10 V.
X Have the alternator and battery checked. The auxiliary heating
switches off
automatically and/or
cannot be switched on. The fuse is blown.
X
Replace the fuse; see the "Fuse allocation" supplement.
X Have the cause of the blown fuse determined at a qualified
specialist workshop. The auxiliary heating
switches off
automatically and/or
cannot be switched on. A malfunction has occurred.
X
Switch the ignition on and off twice.
If the auxiliary heating still cannot be switched on, the heating
device is faulty.
X Have the auxiliary heating checked at a qualified specialist
workshop. The auxiliary heating is
overheated. The coolant level is too low.
X
Check the coolant level and add more coolant if necessary
(Y page 244). Operating the cargo compartment air
vents
If your vehicle is equipped with a roof
ventilator, you can ventilate and extract air
from the cargo compartment. X
Turn the key to position 2in the ignition
lock.
X To activate and extract air: press the
upper section of the 0009switch.
The roof ventilator removes used air from
the cargo compartment.
X To activate and ventilate: press the lower
section of the 0010switch.
The roof ventilator feeds fresh air into the
cargo compartment.
X To switch off: set the switch to the middle
position. Operating the cargo compartment air vents
129Climate control Z
