2021 MERCEDES-BENZ C-CLASS CABRIOLET air condition

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ï Tr ailer tow hit chwarning
lamp *T
hered trailer hitch warning lamp is lit.
The trailer hitch is not operational. &
WARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
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 thewa rning/indicator lamp goes out. #
Notethe messages on the multifunction displa y.Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ÿ Coolant warning lamp *T
he red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty Display messages and
warning/indicator lamps 489

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Stop in a safe location immediately. Do not continue driving! #
Consult a qualified specialist workshop. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
L Wa rning lamp for dis tance
wa rning function *T
he red dis tancewarning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance. 494
Display messa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. ÷
ESP ®
wa rning lamp *
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
or
The yellow ESP ®
wa rning lamp is lit while the engine is running.
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion:
One or more wheels has reached its grip limit (/ page170). #
Adapt your driving style to suit thero ad and weather conditions.
The yellow ESP warning lamp ®
is lit while the engine is running.
ESP ®
is malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. 496
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
R The tyres can wearexc essively and/or une venly.
R The driving characteristics as well as thesteering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tyre pressure and the tyres. Display messages and
warning/indicator lamps 499

Ad
justing treble, mid-range and bass
setting s................................................. 353
Calling up the sound menu.................... 353
Information............................................ 353
Switching volume adjustment on/of f.... 353
Af ter-sales service centre
see ASS YST PLUS
Air distribution Setting................................................... 13 3
Air inlet see Air-water duct
Air pressu re
see Tyre pressure
Air suspension see AIRMATIC
Air vents
Ad justing (front).................................... 13 5
Ad justing (rear)..................................... .135
Ad justing the AIRSCARF vents............... 13 6
Air vents
see Air vents
Ai r-conditioning sy stem
see Climate control Air-recirculation mode..............................
13 4
Air-water duct Keeping free.......................................... 362
Airbag Activation................................................ 38
Fr ont airbag (driver, front passenger)...... 44
Head airba g............................................. 44
Ins tallation locations.............................. .44
Knee airbag............................................ .44
Overview................................................. 44
PA SSENGER AIR BAG indicator lamp....... 49
Pr otection................................................ 45
Re duced pr otection.................................46
Side airba g.............................................. 44
AIR CAP
Ac tivating................................................ 84
Deactivating............................................ 84
Airflow Setting................................................... 13 3
AIRM ATIC
Setting.................................................. .202
Suspension............................................ 201
AIRSCARF Adjusting the outlets............................. 13 6Switching on/of
f................................... 105
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)....... 127
Android Auto
Connecting a mobile phone (wireless).. .312
Ending.................................................... 312
Information............................................ 312
Overview................................................3 11
Sound settings....................................... 312
Tr ans ferred vehicle data........................3 13
Animals Pets in theve hicle................................... 71
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains 502
Index