Page 499 of 609
Key
Display messages
Possible causes/consequences and M
MSolutions
Á Replace key *H
avetheke yre placed. #
Consult a qualified specialist workshop.
Á Change key batteries *T
hekey bat tery is dischar ged. #
Replace the battery (/ page 79).
Á Key not detected (white dis‐
play message) *T
hekey is cur rently und etected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot forst arting with theke y (/ page189). 496
Displaymessa ges and warning/indicator lamps
Page 572 of 609

Ad
justing (rear)..................................... .186
Glove box.............................................. .187
Air vents
see Air vents
Ai r-conditioning sy stem
see Climate control
Air-recirculation mode.............................. 175
Air-water duct Keeping free.......................................... 353
Airbag Activation................................................. 41
Belt airbag............................................... 44
Centre airbag (driver, front passen ger)....47
Fr ont airbag (driver, front passenger)...... 47
Ins tallation locations.............................. .47
Knee airbag............................................ .47
Overview................................................. 47
PA SSENGER AIR BAG indicator lamp....... 52
Pr otection................................................ 48
Re duced pr otection.................................49
Side airba g.............................................. 47
Wi ndow airba g......................................... 47
Airflow Setting................................................... 172AIRM
ATIC
Setting.................................................. .258
Suspension........................................... 258
Alarm sy stem
see ATA (anti-theft alarm sy stem)
All-wheel drive see 4MATIC
Alternative route
see Route
Ambient lighting Setting (MBUX multimedia sy stem)....... 16 2
Android Auto
see Smartphone integration
Animals Pets in theve hicle................................... 76
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains
Anti-theft pr otection
Ad ditional door loc k................................ .81
Immobiliser........................................... 104Anti-theft pr
otection
see ATA (anti-theft alarm sy stem)
Anticipatory occupant pr otection
see PRE- SAFE®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay ®
see Smartphone integration
Assistance sy stems
see Driving saf ety sy stem
ASS YST PLUS
Battery disconnection pe riods.............. 348
Displaying the service due dat e............. 347
Fu nction/no tes..................................... 347
Re gular maintenance work.................... 347
Special service requ irements................ 347
ATA (anti-theft ala rmsystem)
Deactivating the alarm.......................... 105
Fu nction................................................ 104
Fu nction of interior pr otection............... 105
Priming/deactivating interior pr otec‐
tion........................................................ 106 Index
569
Page 588 of 609

To
pographical compensation.................1 57
Interior lighting Adjusting................................................ 161
Ambient lighting.................................... 16 2
Re ading lam p......................................... 161
Switch-off del aytime............................. 16 4
Interior pr otection
Fu nction................................................ 105
Priming/deactivating.............................1 06
Internet radio
see TuneIn
Ionisation Activating/deactivating (MBUX mul‐
timedia sy stem).....................................1 76
iPhone ®
see Smartphone integ ration
ISOFIX child seat anchor
Seats suitable for attaching..................... 64
ISOFIX child seat securing sy stem
Fitting...................................................... 66 J
Jack Declaration of con form ity....................... .31
St orage location.................................... 391
Jump-start connection General no tes........................................3 70 K
Key Acoustic locking verification signal.......... 78
Battery.................................................... 79
Deacti vating a function............................ 78
Emergency key........................................ 79
Energy consum ption................................ 78
Fe atures.................................................. 77
Ke yring attachment................................ 79
Overview................................................. 77
Problem................................................... 81
Un locking setting.................................... .78
KEYLESS-GO Deactivating a function........................... .78
Locking/unlocking theve hicle................83
Problem................................................... 84
Un locking setting.................................... .78Kickd
own
Using.....................................................2 05
Knee airbag................................................. .47 L
Lamp see In terior lighting
Lamps (driver's display) see Indicator/warning lamp
Lane de tection (au tomatic)
see Active Lane Keeping Assist
Lane Keeping Assist
see Active Lane Keeping Assist
Le vel control sy stem
see AIRMATIC
Light adju stment
Low beam (d riving abroad). ................... 15 2
Light switch Overview............................................... 15 2
Lighting see In terior lighting
see Lights Index
585