cooling system when the engine is hot and
could cause damage.
x If a large amount of coolant has been lost,
do not refill the coolant until the engine
has cooled completely. Hea
vy coolant loss
is an indication of leaks in the cooling sys-
tem. The cooling system should be
checked by a qualified workshop as soon
as possible. Failure to do so can result in
engine damage.
x Do not refill coolant if there is no more
coolant in the coolant expansion tank. Air
could have entered the cooling system. Do
not drive on! Seek expert assistance. Fail-
ure to do so can result in engine damage.
x When refilling service fluids, please ensure
that you pour the correct service fluids in-
to the correct openings. The use of incor-
rect service fluids can result in serious
malfunctions and damage to the electric
drive. Troubleshooting
Please refer to , and on page 309
and at the start of the chapter on page
315. Coolant
The indicator lamp flashes red.
Engine coolant temperature too high or en-
gine coolant le
vel too low. Do not driv
e on!
Stop the vehicle as soon as possible and
when safe to do so.
Retrofitting a towing bracket 272
see Trailer towing
264
Socket 268
Swivelling out the ball coupling 266
Tail light clusters 266
Things to note 270
Towing 270
Trailer stabilisation 271
Trailer coupling see Towing bracket 266
Trailer stabilisation 271
Trailer towing Technical prerequisites 265
Transporting items 254
Bag hook 261
Driving tips 132
Driving with a trailer 270
Driving with an open boot lid 133
Fastening rings 259
Load-through hatch 261
Loading a trailer 269
Loading roof carriers 263
Luggage net 260
Roof carrier 262
Securing roof carriers 263
Stowing loads 254
Stowing luggage 254
Trailer towing 264
Travel Assist 168
Displays 169
Switching on and off 170
Troubleshooting 170
Travel mode 110
Things to note 105
Tread depth 334
Tread wear indicators 334
Trim parts Cleaning and care 359
Trim strips Cleaning and care 359
Trip recorder 29
Troubleshooting Activating functions 207
Adaptive chassis control (DCC) 144
Adaptive Cruise Control (ACC) 156
Air conditioning system 126
Airbag system 50
Airbag system deactivated 50
Airbag triggering 82
Alternator warning lamp 323
Automatic locking 82Boot lid
89
Brake energy recuperation fault 142
Brake fluid level too low 319
Brake servo 191
Brake support systems 191
Brake system 134
Car2X communication 200
Central locking 75
Coolant indicator lamp 318
Coolant temperature display 318
Coolant warning lamp 318
Cooling system: engine coolant level too low 318
Cooling system: engine coolant temper- ature too high 318
Cooling system: fault in the coolant cir- cuit 318
Cruise control system (CCS) 147
Deactivation of the drive is immi- nent 136
Driving instructions 134
Driving profile selection 144
Easy Open 89
eCall emergency call system fault 71
eCall Emergency System restric- ted 71
Electric drive 139
Electrical system overheated 142
Electronic engine sound 140
Electronic parking brake 178
Electronic parking brake does not switch itself off 178
Electronic parking brake does not switch itself off completely 178
Electronic parking brake fault 178
Emergency Assist 172
Emergency start function 140
Emergency switch-off 140
ESC fault 192
Exhaustive discharge (high-voltage bat- tery) 285
Fault in the high-voltage system 285
Front passenger front airbag deactiva- ted 50
Front passenger front airbag switched on 50
Heating and fresh air system 126
High-voltage battery is empty 285
Holding force of the electronic parking brake is insufficient 178
Ignition lock 139
Immobiliser 139, 140
Index 41111A012720AB
