Page 689 of 757
Display messages
Possible causes/consequences and 0050
0050Solutions
0099 AdBlue system fault See
Owner's Manual *
The AdBlue ®
sy stem is malfunctioning. #
Consult a qualified specialist workshop immediatel y.
0099
AdBlue system fault Emer-
gency op. in XXX miles See
Owner's Manual *
The AdBlue ®
sy stem is malfunctioning. Performance will be reduced once there maining dis tance displ ayed has
been co vered. #
Consult a qualified specialist workshop immediatel y.
0099
AdBlue system fault Emer.
op.: max. XXX km/h Start
not poss. in XXX km *
Po we rre striction due totheAd Blue ®
sy stem fault. Af terth e dis tance displ ayed has been co vered, it will no longer
be possible tostart the engine. #
Consult a qualified specialist workshop immediatel y.686
Display messages and warning/indicator lamps
Page 690 of 757
Display messages
Possible causes/consequences and 0050
0050Solutions
0099 AdBlue system fault Engine
start not possible *
The AdBlue ®
sy stem is malfunctioning. You can no lon gerst art the engine. #
Consult a qualified specialist workshop immediatel y. Engine oil
Display messages
Possible causes/consequences and 0050 0050Solutions
00B3 Add 1 litre engine oil when
next refuelling *D
isplay message only for cer tain engines:
The engine oil le vel has dropped tothe minimum le vel.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
When next refuelling, add 1 litre of engine oil (/ page 521).
No tes on engine oil (/ page 623). Display messages and
warning/indicator lamps 687
Page 691 of 757
Display messages
Possible causes/consequences and 0050
0050Solutions
00B3 Engine oil level Reduce oil
level *D
isplay message only for cer tain engines:
The engine oil le vel is too high.
* NO
TEEngine dama gecaused bydriving with excess engine oil #
Avoid long journe yswith excess engine oil. #
Consult a qualified specialist workshop immediately and ha vethe engine oil le velre duced.
00B3 Engine oil level Stop vehi-
cle Switch engine off *D
isplay message only for cer tain engines:
The engine oil le vel is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Switch off the engine. #
Add 1 l of engine oil (/ page 521). #
Check the engine oil le vel.
No tes on engine oil (/ page 623).688
Display messages and warning/indicator lamps
Page 692 of 757

Display messages
Possible causes/consequences and 0050
0050Solutions
00B3 Engine oil pressure Stop
Switch off engine *D
isplay message only for cer tain engines:
The oil pressure is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient oil pressure #
Avoid driving with insuf ficient oil pressure. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Consult a qualified specialist workshop.
00B3 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. Wa
rning and indicator lamps Overview of indicator and
warning lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some indicator and
wa rning lamps may briefly light up or flash. This
behaviour is non-critical. These indicator and wa
rning lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y. Displ
aymessa ges and warning/indicator lamps 689
Page 693 of 757

Instrument display
Depending on
the display setting, the positions
of the indicator lamps on the instrument display
may dif fer from theex ample shown.
Indicator and warning lamps:
0075 Re
stra int sy stem (/ page 691)
00E9 Seat belt (/
page 691)
ï Trailer hit ch (/page 692)
Ù Electric po werst eering
(/ page 692)
ÿ Coolanttoo hot or cold
(/ page 693) 00B9
Engine diagnostics (/
page 693)
0028 Preglow
003D Electri
calfault(/ page 693)
00B6 Fu
elreser vewith fuel filler flap loca‐
tion indicator (/ page 693)
0024 Elect
ric pa rking brake applied (red)
(/ page 696)
0024 Electric parking brake (yellow)
(/
page 696)
004D Brakes (yellow) (/
page 696)
004D Brakes (red) (/
page 696)
L Distance warning (/ page 699)
ä AIRMATIC / E- ACTIVE BODY CON‐
TROL (/ page 699)
0025 ABS (/
page 700)
00E5 ESP®
(/ page 700)
00BB ESP®
OFF (/ page 700)
0077 Ty
re pressure monitor (/ page 703)
0060 St
anding lights (/ page140)
0058 Low beam (
/page 140) 0057
High beam (/
page142)
003E003D Tu
rn signal light (/ page142)
005E Re
ar fog light (/ page140) 690
Displaymessa ges and warning/indicator lamps
Page 694 of 757

Occupant saf
ety Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
0075 Re stra int sy stem warning
lamp The
redre stra int sy stem warning lamp is lit while the engine is running.
*The restra int sy stem is malfunctioning (/ page37). &
WARNING Risk of inju rydue tomalfunctions in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or may
not deploy as intended during an accident. This may af fect the seat belt tensioner or airbag, forex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. #
Drive on carefully. #
Notethe messages on the multifunction displa y. #
Consult a qualified specialist workshop immediatel y.
0076
Seat belt warning lamp
fl ashes The
red seat belt warning lamp flashes and an intermit tent wa rning tone sounds.
*T he driver or front passenger has not fastened their seat belt while theve hicle is in motion. #
Fasten your seat belt(/ page41).
*T here are objects on the front passenger seat. #
Remo vethe objects from the front passenger seat. Display messages and
warning/indicator lamps 691
Page 695 of 757

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
0076 Seat belt warning lamp
lights up The
red seat belt warning lamp will light up once the engine has star ted.
In addition, a warning tone may sound.
*T he seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts. #
Fasten your seat belt (/ page41).
If yo u ha veplaced objects on the front passenger seat, the seat belt warning lamp may remain lit. Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
ï Tr ailer tow hit chwarning
lamp The
red trailer hitch warning lamp is lit.
*The trailer hitch is not operational or is swivelling. &
WARNING Risk of an accident if the ball neck is not loc ked
If th e ball neck is not in the loc ked position, the trailer may come loose. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivel mo vement and do not re-couple the trailer until the display message disappears. #
Notethe messages on the multifunction displa y.692
Display messages and warning/indicator lamps
Page 696 of 757

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
If th e trailer hitch is swivelling: #
Wait until the ball coupling has reached the operational position.
Ù
Wa rning lamp for electric
po we rst eering The
red elect ric po werst eering warning lamp is lit while the engine is running.
*The po wer assi stance or thesteering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
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. #
Notethe messages on the multifunction displa y.Engine
Wa
rning/indicator lamp
Possible causes/consequences and 0050 0050Solutions
ÿ Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
*Possible causes: R The temp erature sensor is malfunctioning Display messages and
warning/indicator lamps 693