Page 378 of 549

fi
ed based on the actual operating conditions
and/or loads.
Examples of arduous operating conditions:
R regular city driving with frequent intermedi‐
ate stops
R mainly short-dis tance driving
R frequent operation in mountainous terrain or
on poor road sur faces
R when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil
and oil filter etc. changed more frequent ly. The
ty re s must be checked more frequently if the
ve hicle is operated under increased loads. Fur‐
th er information can be obtained at a qualified
specialist workshop. Battery disconnection periods
The ASS
YST PLUS se rvice inter val display
can only calculate the service due da tewhen
th e bat tery is connected. #
Notedown the service due date displa yed on
th e instrument display before disconnecting
th e battery (/ page374). Engine com
partment Opening/closing the bonnet
&
WARNING Risk of accident due todriv‐
ing with the engine bonn etunlo cked
An unloc ked engine bonn etmay open up
when theve hicle is in motion and block your
vie w. #
Never unlock the engine bonn etwhen
driving. #
Before every trip, ensure that the
engine bonn etis loc ked. &
WARNING Risk of accident and inju ry
when opening and closing the engine
bonn et
When opening or closing the engine bonn et,
it may suddenly drop into the end position.
There is a risk of injury for an yone in the
engine bonn et's range of mo vement. #
Only open or close the engine bonn et
when there are no persons in the
engine bonn et's range of mo vement. &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. Maintenance and care
375
Page 489 of 549

Display messages
Possible causes/consequences and M
MSolutions #
Consult a qualified specialist workshop. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Consult a qualified specialist workshop.
Ð Steering malfunction
Increased physical effort
See Owner's Manual *T
he po wer assi stance forth esteering is malfunctioning. &
WARNING Risk of an accident due toaltered steering characteristics
If th e po wer assi stance of thesteering fails partially or comple tely, you will need touse more forc eto steer. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y.
? *T
he bonnet is open. &
WARNING Risk of accident due todriving with the engine bonn etunlo cked
An unloc ked engine bonn etmay open up when theve hicle is in motion and block your vie w. #
Never unlock the engine bonn etwhen driving. 486
Display messages and warning/indicator lamps
Page 522 of 549

Operation ............................................
14 8
Switching off/on ................................. 14 9
Electric pa rking brake ............................ .174
App lying automatically ........................ .174
App lying or releasing manually ............ 176
Emergency braking .............................. 176
Re leasing automatically ...................... .175
Electrical fuses see Fuses
Electromagnetic compatibility Declaration of conformity ......................22
Electronic Stability Prog ram
see ESP ®
(Electronic Stability Prog ram)
Emer gency
Fire extinguisher ................................. .393
Fir st-aid kit (so ftsided) ....................... 392
Overview of the help functions .............. 16
Re moving thewa rning triangle ............ 392
Saf etyve st ........................................... 391
Setting up thewa rning triangle .......... .392
Emer gency braking ..................................1 76
Emer gency braking
see BAS (Brake Assi stSystem) Emer
gency call sy stem
see Mercedes-Benz emer gency call sy stem
Emer gency engine start ......................... 405
Emer gency key
Inserting/removing ............................... 73
Locking a door ....................................... 76
Un locking a door .................................. .76
Emer gency operation mode
St arting theve hicle ............................. 14 2
Emer gency spare wheel .......................... 424
No tes ................................................... 424
Engine ECO start/ stop function ......................1 48
Engine number ................................... .427
St arting (eme rgency operation
mode) .................................................. 14 2
St arting (s tart/s top button) .................1 42
St arting assis tance .............................. 399
Switching off (s tart/s top button) ........ 16 8
Engine bonnet Opening/closing .................................. 375
Engine data Displaying ............................................ 15 2Engine electronics
Notes .................................................. 425
Engine number ........................................4 27
Engine oil .................................................. 378
Ad ditives .............................................4 34
Capacity .............................................. 435
Che cking the oil le vel using the on-
board computer ................................... 377
MB-F reigabe or MB-Appr oval .............. .435
Quality ................................................. 435
To pping up ...........................................3 78
Entering characters
Fu nction/no tes ................................... 259
On theto uchpad ................................ .260
Using the controller ............................. 260
ERA-GLONASS test mode
St arting/ending .................................. .324
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Desert ................................................. 182
Tr ailer stabilisation .............................. 182 Index
519