Mercedes-Benz C-Class Convertible 2021 Operator's Manual page 487

R
Radar and ultrasonic sensors
Damage................................................. 150
Radio
Activating.............................................. 306
Activating/deactivating radio text......... 309
Calling up the station list....................... 308
Deleting stations................................... 308
Direct frequency entry.......................... 308
Displaying information........................... 309
Displaying radio text.............................. 309
Managing favorites................................ 308
Managing station presets...................... 308
Moving stations..................................... 308
Overview............................................... 307
Searching for stations........................... 308
Setting a channel.................................. 308
Setting the waveband............................ 308
Storing radio stations............................ 308
Switching the HD Radio function on/
off......................................................... 308
Voice commands (Voice Control Sys‐
tem)....................................................... 213
Radio operating permits........................... 387
Reading lamp
see Interior lighting
Real wood (Care)....................................... 330
Rear fog lamp
Switching on/off................................... 109
Rear seat
see Seat
Rear view camera
Care...................................................... 329
Function................................................ 184
Opening the camera cover (360°
Camera)................................................. 189
Setting favorites (360° Camera)............ 189
Rear window heater.................................. 120
Reflective safety vest............................... 333
Refrigerant (air conditioning system)
Notes..................................................... 394
Refueling
Refueling the vehicle.............................. 141
Remote Online
Charging the starter battery.................. 127
Cooling or heating the vehicle interior... 126
Starting the vehicle............................... 127
Reporting safety defects............................ 28
Rescue card................................................. 29
Reserve
Fuel....................................................... 392
Reset function (multimedia system)....... 240
Restoring (factory settings)
see Reset function (multimedia system)
Restraint system
Basic instructions for children................. 51
Function in an accident........................... 36
Functionality............................................ 35
Malfunction............................................. 36
Protection................................................ 35
Reduced protection................................. 35
Self-test................................................... 35
Warning lamp.......................................... 35
Reverse gear
Inserting................................................ 137
Rims (care)................................................. 329
Roadside Assistance (breakdown)............ 23
Roll away protection
see HOLD function
Index 485