four wheel drive MERCEDES-BENZ CLA 2017 Owners Manual

1, 2, 3 ...4ETS (Electronic Traction System)
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC
Display message ............................ 213
4MATIC (permanent four-wheel
drive) .................................................. 159
12 V socket
see Sockets
AABS (Anti-lock Braking System)
Display message ............................ 189
Function/notes ................................ 60
Important safety notes .................... 60
Warning lamp ................................ .2 18
Accident
Automatic measures after an acci-
dent ................................................. 53
Activating media mode
General notes ................................ 232
Activating/deactivating cooling
with air dehumidification ................. 114
Active Brake Assist
Activating or deactivating .............. 182
Display message ............................ 194
Function/notes ................................ 61
ADAPTIVE BRAKE ................................. 66
Adaptive Damping System
Function/notes ............................ .1 59
Adaptive Highbeam Assist
Display message ............................ 202
Function/notes ............................ .1 01
Switching on/off ........................... 102
Additional speedometer ................... 184
Additives (engine oil) ........................ 312
Address book
see also Digital Operator's Man-
ual ................................................. .2 27
Adjusting the volume
Audio 20 ........................................ 228
COMAND ....................................... 228
Air bags
Deployment ..................................... 51
Display message ............................ 197 Front air bag (driver, front
passenger) ....................................... 45
Important safety notes .................... 44
Introduction ..................................... 44
Knee bag .......................................... 45
Occupant Classification System
(OCS) ............................................... 46
PASSENGER AIR BAG indicator
lamps ............................................... 40
Side impact air bag .......................... 45
Window curtain air bag .................... 46
Ai r vents
Important safety notes .................. 119
Rear ............................................... 119
Setting the center air vents ........... 119
Setting the side air vents .............. .1 19
Air-conditioning system
see Climate control
Alarm
ATA (Anti-Theft Alarm system) ......... 67
Switching off (ATA) .......................... 67
Switching the function on/off
(ATA) ................................................ 67
Alarm system
see ATA (Anti-Theft Alarm system)
AMG
Adaptive sport suspension sys-
tem ................................................ 158
Performance Seat ............................ 93
AMG adaptive sport suspension
system
General Information ....................... 158
AMG menu (on-board computer) ..... 185
AMG Performance exhaust sys-
tem ..................................................... 126
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Ashtray ............................................... 240
Assistance display (on-board com-
puter) ................................................. .1 82
Assistance menu (on-board com-
puter) ................................................. .1 82
ASSYST PLUS
Displaying a service message ....... .2 58
Driving abroad ............................... 2594
Index

the information on display messages
( Y
page 209).
It may take up to ten minutes for a malfunction
of the tire pressure monitor to be indicated. A
malfunction will be indicated by the tire pres-
sure warning lamp flashing for approximately
one minute and then remaining lit. When the
malfunction has been rectified, the tire pressure
warning lamp goes out after a few minutes of
driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at a gas station with a pressure gauge. The
tire pressures shown by the on-board computer
refer to those measured at sea level. At high
altitudes, the tire pressure values indicated by a
pressure gauge are higher than those shown by
the on-board computer. In this case, do not
reduce the tire pressures.
The operation of the tire pressure monitor can
be affected by interference from radio transmit-
ting equipment (e.g. radio headphones, two-way
radios) that may be being operated in or near the
vehicle.
Checking the tire pressure electroni-
cally X
Make sure that the SmartKey is in position 2
in the ignition lock ( Y
page 121).X
Press Y or e on the steering wheel to
select the Serv. menu.X
Press the c or d button to select
Tire Pressure .X
Press the v button.
The current tire pressure of each tire is shown
in the multifunction display.
If the vehicle was parked for longer than
20 minute s, the Tire pressure will be
displayed after driving a few minutes
message is shown.
After a teach-in process, the tire pressure mon-
itor automatically detects new wheels or new
sensors. As long as a clear allocation of the tire
pressure value to the individual wheels is not
possible, the Tire Pressure Monitor Active
message is shown instead of the tire pressure
display. The tire pressures are already being
monitored. Tire pressure monitor warning mes-
sages If the tire pressure monitor detects a pressure
loss in one or more tires, a warning message is
shown in the multifunction display. The yellow
tire pressure warning lamp then lights up. R
If the Please Correct Tire Pressure
message appears in the multifunction display,
the tire pressure in at least one tire is too low.
The tire pressure must be corrected when the
opportunity arises. R
If the Check Tire Pressure message
appears in the multifunction display, the tire
pressure in one or more tires has dropped
significantly. The tires must be checked. R
If the Tire Pressure Warning Tire Fail‐
ure message appears, the tire pressure in one
or more tires has dropped suddenly. The tires
must be checked.
Observe the instructions and safety notes in the
display messages in the "Tires" section
( Y
page 209).
If the wheel positions on the vehicle are rotated,
the tire pressures may be displayed for the
wrong positions for a short time. This is rectified
after a few minutes of driving, and the tire pres-
sures are displayed for the correct positions.
Restarting the tire pressure monitor When you restart the tire pressure monitor, all
existing warning messages are deleted and the
warning lamps go out. The monitor uses the cur-
rently set tire pressures as the reference values
for monitoring. In most cases, the tire pressure
monitor will automatically detect the new refer-
ence values after you have changed the tire
pressure. However, you can also set reference
values manually as described here. The tire
pressure monitor then monitors the new tire
pressure values. X
Set the tire pressure to the value recommen-
ded for the corresponding driving situation on
the Tire and Loading Information placard on
the driver's side B-pillar ( Y
page 285).
You can find more tire pressure values for
various operating conditions in the tire pres-
sure table inside the fuel filler flap
( Y
page 138). X
Make sure that the tire pressure is correct on
all four wheels.Tire pressure 291
Wheels and tires Z