Page 537 of 585
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ð Po we rsteering sy stem
wa rning lamp The
redp owe rsteering sy stem warning lam pislit while thee ngine is running.
The po wersteering assis tance or thes teering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th es teering does no tfunction as intended, thev ehicle's operating saf etyisj eopardised. #
Pull overand stop thev ehicle safely as soon as possible, paying attention toroad and traf ficc onditions .Do
no tc ontinu edriving under an ycircums tances. #
Consult aqualified specialis tworks hop. #
Obser vethem essages in them ultifunction displa y.534
Displa ymessages and warning/indicator lamps
Page 538 of 585

Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
; Engine diagnosis warning
lamp The
yello we ngin ediagno stics warning lam pislit while thee ngine is running.
Am alfunctio nhasoccu rred in thee ngine, thee xhau stsystem or thef uel sy stem.
The emissions limit value ma yhave been exceeded and thee ngine ma yberunninginemergency operation mode. #
Have thev ehicle checkedass oon as possible at aqualified specialis tworks hop.
Ve hicles with adiesel engine: thef uel tank ma yhave been rund ry. #
Startt he engine thre etof our times af terr efuelling.
If th ey ello wengin ediagno stics warning lam pgoes out, emer gency operation mod eiscancelled .The vehicle need
no tbec hecked.
#
Elect rical fault warning
lamp The
rede lect rical fault warning lam pislit.
Ther eisaf ault in thee lectrics. #
Obser vethem essages in them ultifunction displa y.
8
Fu elreser vewarning lamp The
yello wf uel reser ve wa rning lam pislit while thee ngine is running.
The fue lsuppl yhasdroppe dintot he reser verange. #
Refuel. Displ
aymessa gesa nd warning/indicator lamps 535
Page 539 of 585

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
? Coolant warning lamp The
redc oolant warning lam pislit while thee ngine is running.
Po ssible causes:
R The temp eratur esensor is malfunctioning
R Coolant le veltoo low
R The air suppl ytotheradiator is obstructed
R The radiator fani sfaulty
If th er eisana dditional warning tone, thec oolant temp eratur ehasexceeded 120° C. &
WARNING Danger of bu rnsw hen opening theb onnet
If yo uo pen thee ngine bonn etwhen thee ngine has overheated or during afireint he engine compartment, you
could come int ocontact wi thhotg ases or other escaping operating fluids. #
Befor eopening theb onnet ,allowt he engine tocool down. #
Inthee vent of afireint he engine compartment, keep thee ngine bonn etclosed and cal lthe fire service. #
Stop thev ehicle immediately ,paying attention toroad and traf ficc onditions ,and switc hoffthee ngine. Do no tcon‐
tinue driving under an ycircums tances. #
Obser vethem essages in them ultifunction displa y.
If th ec oolant temp eratur edispla yisatt he lowerend of thet emperatur escale: #
Consult aqualified specialis tworks hop. 536
Displa ymessages and warning/indicator lamps
Page 540 of 585
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Otherwise: #
Lea vethev ehicle and keep asafed ista nce from thev ehicle until thee ngine has cooled down. #
Chec kthe coolant le vel. #
Mak esuret hat thea ir supply tother adiator is no tobstructed. #
Avoiding high loads on thee ngine, driv eontothe neares tqualified specialis tworks hop. In doing so, ensur ethat the
coolant temp eratur edispla yremain sbelo w1 20 °C. Displ
aymessa gesa nd warning/indicator lamps 537
Page 541 of 585
Ty
res Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressur emonitoring
sy stem warning lam plights
up The
yello wt yrep ressur emonitoring sy stem warning lam p(pressur eloss/malfunction) is lit.
The tyr epressur emonitoring sy stem has de tected tyr epressur elossinatl east one of thet yres. &
WARNING Risk of an accident du etoinsufficient tyr epressure
Ty resw ithi nsuf ficient tyr epressur eposet he following risks:
R The tyres ma yburst,e speciall yasthe load and vehicle speed increase.
R The tyres ma ywear excessively and/or une venly, whic hmaygreatl yimp air tyr etraction.
R ‑The drivin gcharacteristics, steering and braking ma ybegreatl yimp aired.
Yo uc ouldthen lose control of thev ehicle. #
Obser vether ecommende dtyrep ressures. #
Adjus tthe tyr epressur eifn ecessar y. #
Stop thev ehicle, paying attention toroad and traf ficc onditions. #
Chec kthe tyr epressur eand thet yres. 538
Displa ymessages and warning/indicator lamps
Page 542 of 585
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
h Ty re pressur emonitoring
sy stem warning lamp
fl ashes The
yello wt yrep ressur emonitoring sy stem warning lam p(pressur eloss/malfunction) flashes fora pproxima tely one
minut eand then remains lit.
The tyr epressu remonitoring sy stem is faulty. &
WARNING Thereisar isk of an accident if thet yrep ressur emonitoring sy stem is malfunctioning
If th et yrep ressur emonitoring sy stem is malfunctioning, it is no table toissue awarning if ther eisp ressur eloss in
one or mor eofthe tyres.
Ty resw ithi nsuf ficient tyr epressur emay,for example, af fect thev ehicle's handling characteristics, steering and
braking. ‑ #
Have thet yrep ressur emonitoring sy stem checkedataq ualified specialis tworks hop. #
Consult aqualified specialis tworks hop. Displa
ymessages and warning/indicator lamps 539
Page 543 of 585

1,
2, 3. ..
12 Vs ocket
see Soc ket(12 V)
23 0Vs ocket
see Soc ket(23 0V)
360° Camera ........................................... 229
Assigning as afavo urite....................... 233
Ca re .................................................... 402
Fu nctio n.............................................. 229
Selecting aview. ................................. 233 A
A/ Cf unction
Ac tivating/deactivating (control
panel ).................................................. 15 6
Ac tivating/deactivating (multimedia
sy stem) ................................................ 15 6
ABS (Anti-loc kBraking Sy stem) ............ .195
Ac celeration
see Kickdown
Ac cess data
Editing ................................................ .360
Setting ................................................. 359 Setting up (business
telephony) .......... 358
Ac oustic locking verification signal
Ac tivating/deactivating ......................... 67
Ac tiv eB lind Spo tAssist .......................... 24 8
Ac tivating/deactivating ...................... .250
Brak eapplication ................................. 24 9
Fu nctio n.............................................. 24 8
Sy stem limitations ...............................2 48
Tr ailer operation .................................. 24 9
Ac tiv eb onne t(pedestrian pr otection) .. 392
Operation ............................................ 392
Re setting. ............................................ 392
Ac tiv eB rake Assi st
Fu nction/no tes. .................................. 201
Setting. ................................................2 05
Ac tiv eD ista nce Assis tDISTR ON IC ........ 209
Ac tiveE mergency Stop Assis t.............. 217
Ac tiveL aneC hangeA ssist ................... 216
Callin gupas peed............................... 212
Fu nctio n.............................................. 209
Increasing/decreasing speed .............. 212
Le ver. .................................................. .212
Re quirements: .................................... .212
Selecting .............................................. 212St
oring aspeed .................................... 212
Switching off/deacti vating .................. 212
Switching on/activating ....................... 212
Sy stem limitations ...............................2 09
Ac tiv eE me rgency Stop Assist ................ 217
Ac tiv eh eadlamps function .....................13 8
Ac tiv eL aneC hang eAssist
Fu nctio n............................................... 216
Ac tiv eL aneK eeping Assist .................... 250
Ac tivating/deactivating ...................... .252
Fu nctio n.............................................. 250
Sensitivity (function/no tes) ................. 253
Settingt he sensitivity .......................... 253
Sy stem limits ....................................... 250
Tr ailer operation .................................. 250
Ac tiv eP arking Assist .............................. 233
Cross Traf ficA lert. ............................... 24 3
Driv eAwayA ssist ................................ 24 3
Exiting aparkin gspace ...................... .236
Fu nctio n.............................................. 233
Pa rking ................................................ 235
Sy stem limitations ...............................2 33
Ac tiv eS peed Limit Assi st....................... 247
Setting ................................................. 247540
Index
Page 544 of 585

Ac
tiv eS teering Assist ............................ .215
Ac tivating/deactivating ...................... .216
Ac tiveE mergency Stop Assis t.............. 217
Ac tiveL aneC hangeA ssist ................... 216
Fu nctio n............................................... 215
Sy stem limitations ...............................2 15
Ad aptiv ebrake lights .............................. 205
Ad aptiv ecruise control
see ActiveD ista nce Assi stDISTRONIC
Ad aptiv efunctions ,MULTIBEA MLED
see Intelligent Ligh tSystem
Ad aptiv eHighbeam Assist
Ac tivating/deactivating ...................... .140
Fu nctio n.............................................. 13 9
Ad aptiv eHighbeam Assis tPlus
Ac tivating/deactivating ...................... .142
Fu nctio n............................................... 141
Ad Blue ®
.................................................... 456
Ad ditives .............................................4 56
Filling capacity ................................... .457
No tes. .................................................. 184
Purity ................................................... 456
To pping up ...........................................1 84Ad
ditional doo rlock .................................. 70
Ad diti ves .................................................. 457
Ad Blue ®
............................................... 456
Engine oil ............................................. 457
Fu elling ................................................ 455
Ad diti ves( Ad Blue ®
)
see AdBlue ®
Ad diti ves( engine oil)
see Additives
Ad diti ves( fuel)
see Fuelling
Ad dres sbook
see Contacts
Ad justin gthe balance/ fader
Burmes ter®
sur round soun dsystem. .. 389
Ad justin gthe headlam prange ............... 13 5
Ad justin gthe sound focus
Burmes ter®
sur round soun dsystem. .. 390
ADS PLUS damping sy stem
see AI RBODYC ONTROL
Ad versew eathe rlight ............................ .139 Af
ter-sales service centre
see ASS YSTP LUS
AIR BODY CONT ROL................................ .219
Setting ................................................. 221
Suspensio n.......................................... 219
Air conditioning sy stem
see Climat econtrol
Air distribution ........................................ 154
Air freshener sy stem
see Frag rance sy stem
Air suspension see AIR BODY CONTROL
Air vents ................................................... 16 4
Ad justing (front) ................................... 16 4
Ad justing (rear) .................................... 16 4
Glo vebox. ............................................ 16 4
Air vents
see Air vents
Ai r-re circulation mode ............................ 157
Airbag ........................................................ .38
Ac tivation .............................................. 32
Fr ont airbag (driver ,fro nt passenger) ....38
Ins tallation locations ............................ .38 Index
541