transmission MERCEDES-BENZ GLC 2019 Owners Manual
[x] Cancel search | Manufacturer: MERCEDES-BENZ, Model Year: 2019, Model line: GLC, Model: MERCEDES-BENZ GLC 2019Pages: 370, PDF Size: 19.55 MB
Page 4 of 370
Index.......................................................4
Digital Operator's Manual..................26
Introduction ...........................................26
Operation ............................................... 26
Introduction.........................................27
Protecting the environment ...................27
Genuine Mercedes-Benz parts ...............27
Operator's Manual ................................. 28
Service and vehicle operation ................28
Operating safety .................................... 30
QR code for rescue card ........................ 32
Data stored in the vehicle ......................32
Information on copyright ....................... 34
At a glance...........................................35
Cockpit .................................................. 35
Instrument cluster .................................36
Multifunction steering wheel ................. 37
Center console ...................................... 38
Overhead control panel .........................41
Door control panel ................................. 42
Safety...................................................43
Panic alarm ............................................ 43
Occupant safety .................................... 43
Children in the vehicle ........................... 59
Pets in the vehicle ................................. 64
Driving safety systems ........................... 65
Protection against theft .........................75
Opening and closing...........................77
SmartKey ............................................... 77
Doors ..................................................... 83
Cargo compartment ...............................84
Side windows ......................................... 89
Sliding sunroof ....................................... 93
Seats, steering wheel and mirrors....96
Correct driver's seat position ................ 96
Seats ..................................................... 96
Steering wheel ..................................... 102
Mirrors ................................................. 104
Memory function ................................. 107
Lights and windshield wipers..........109
Exterior lighting ................................... 109
Interior lighting .................................... 113
Replacing bulbs ................................... 113
Windshield wipers ................................ 115
Climate control.................................119
Overview of climate control systems ... 119
Operating the climate control sys-
tems .................................................... 122
Air vents .............................................. 128
Driving and parking..........................130
Notes on breaking-in a new vehicle ..... 130
Driving ................................................. 130
DYNAMIC SELECT switch .................... 139
Automatic transmission ....................... 141
Refueling ............................................. 150
Parking ................................................ 152
Driving tips .......................................... 155
Driving systems ................................... 160
Towing a trailer .................................... 202
On-board computer and displays....208
Important safety notes ........................ 208
Displays and operation ........................ 208
Menus and submenus ......................... 212
Display messages ................................ 227
Warning and indicator lamps in the
instrument cluster ............................... 256
Multimedia system...........................268
General notes ...................................... 268
Important safety notes ........................ 268
Function restrictions ............................ 268
Operating system ................................ 269
Stowage and features......................278
Stowage areas ..................................... 278
Features .............................................. 289
2Contents
Page 8 of 370
Automatic car wash (care)...............305
Automatic engine start (ECO start/
stop function)....................................136
Automatic engine switch-off (ECO
start/stop function).......................... 136
Automatic headlamp mode.............. 109
Automatic transmission
Accelerator pedal position ............. 144
Changing gear ............................... 144
DIRECT SELECT lever ..................... 141
Display message ............................ 252
Double-clutch function .................. 144
Drive program ................................ 145
Drive program display.................... 142
Driving tips .................................... 144
DYNAMIC SELECT switch .............. 139
Emergency running mode .............. 150
Engaging drive position .................. 142
Engaging neutral ............................ 142
Engaging park position automati-
cally ............................................... 141
Engaging reverse gear ................... 142
Engaging the park position ............ 141
Gearshift recommendation ............ 149
Gliding mode................................. 144
Kickdown ....................................... 144
Manual shifting .............................. 147
Oil temperature (on-board com-
puter, Mercedes-AMG vehicles) ..... 223
Overview ........................................ 141
Permanent setting ......................... 147
Problem (malfunction) ................... 150
Pulling away ................................... 134
Starting the engine ........................ 133
Steering wheel paddle shifters ...... 147
Trailer towing ................................. 145
Transmission position display
(DIRECT SELECT lever) ................... 142
Transmission positions .................. 143
Automatic transmission emer-
gency mode....................................... 150
Axle load, permissible (trailer tow-
ing)...................................................... 365
B
Back button....................................... 269
Backup lamp
Display message ............................ 239
Bag hook............................................ 283
Ball coupling
Installing ........................................ 204
Removing ....................................... 206
BAS (Brake Assist System)................. 66
Battery (SmartKey)
Checking .......................................... 80
Important safety notes .................... 80
Replacing ......................................... 80
Battery (vehicle)
Charging ........................................ 321
Display message ............................ 241
Important safety notes .................. 319
Jump starting ................................. 322
Belt warning......................................... 48
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 220
Display message ............................ 246
Notes/function .............................. 193
see Active Blind Spot Assist
Blower
see Climate control
Bluetooth®
Searching for a mobile phone ........ 275
see also Digital Operator's Man-
ual .................................................. 268
Brake
Active Brake Assist with cross-
traffic function ................................. 72
Brake Assist
see BAS (Brake Assist System)
Brake assistance
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 233
Notes ............................................. 361
Brake force distribution
see EBD (electronic brake force
distribution)
Brake linings
Display message ............................ 233
Brakes
ABS .................................................. 65
Adaptive Brake Assist ...................... 67
6Index
Page 11 of 370
Filling capacity ............................... 362
Important safety notes .................. 361
Temperature display in the instru-
ment cluster .................................. 209
Warning lamp .................................263
Cooling
see Climate control
Copyright............................................. 34
Cornering light function
Display message ............................ 239
Function/notes .............................111
Crosswind Assist................................. 71
Cruise control
Cruise control lever ....................... 160
Deactivating ................................... 161
Display message ............................ 249
Driving system ............................... 160
Function/notes .............................160
General notes ................................ 160
Important safety notes .................. 160
Setting a speed .............................. 161
Storing and maintaining current
speed ............................................. 161
Storing the current speed or call-
ing up the last stored speed .......... 161
Cup holder
Center console .............................. 289
Important safety notes .................. 289
Rear compartment ......................... 289
Customer Assistance Center
(CAC)..................................................... 31
Customer Relations Department....... 31
D
Data
see Technical data
Data carrier
Selecting ........................................ 217
Daytime running lamps
Display message ............................ 239
Function/notes .............................109
Switching on/off (on-board com-
puter) ............................................. 222
Diagnostics connection......................31
Digital Operator's Manual
Help .................................................26
Introduction .....................................26
Digital speedometer.........................213
DIRECT SELECT lever
Automatic transmission ................. 141
Display
see Display messages
see Warning and indicator lamps
Display messages
ASSYST PLUS ................................ 303
Calling up (on-board computer) ..... 227
Driving systems .............................244
Engine ............................................ 240
General notes ................................ 227
Hiding (on-board computer) ........... 227
Introduction ................................... 227
Lights ............................................. 239
Safety systems .............................. 228
SmartKey ....................................... 255
Tires ............................................... 250
Vehicle ...........................................252
Distance recorder.............................212
Distance warning (warning lamp).... 265
Distance warning function
Function/notes ................................ 67
Distance warning system
see Active Brake Assist
Doors
Automatic locking (switch) ...............84
Central locking/unlocking
(SmartKey) .......................................77
Control panel ...................................42
Display message ............................ 254
Emergency locking ........................... 84
Emergency unlocking ....................... 84
Important safety notes.................... 83
Opening (from inside) ...................... 83
Drinking and driving......................... 156
Drive program
Automatic transmission ................. 145
SETUP (on-board computer,
Mercedes-AMG vehicles) ............... 224
Drive programs
Display (DIRECT SELECT lever) ...... 142
DYNAMIC SELECT switch .............. 139
Driver's door
see Doors
Driving abroad
Mercedes-Benz Service ................. 305
Index9
Page 12 of 370
Driving Assistance PLUS package...197
Driving on flooded roads.................. 159
Driving safety system
Active Brake Assist .......................... 66
Crosswind Assist .............................71
Driving safety systems
ABS (Anti-lock Braking System) .......65
Active Brake Assist with cross-
traffic function................................. 72
ADAPTIVE BRAKE............................. 72
Adaptive Brake Assist ...................... 67
BAS (Brake Assist System) .............. 66
Distance warning function ............... 66
EBD (electronic brake force distri-
bution) ............................................. 72
ESP®(Electronic Stability Pro-
gram) ............................................... 68
Important safety information ........... 65
Overview .......................................... 65
STEER CONTROL ............................. 75
Driving system
Active Distance Assist
DISTRONIC .................................... 162
Active Distance Assist
DISTRONIC with Active Steering
Assist ............................................. 168
AIR BODY CONTROL ...................... 172
AMG sports suspension based on
AIR BODY CONTROL ...................... 174
Parking assist PARKTRONIC .......... 179
RACE START (Mercedes-AMG
vehicles) ........................................ 171
Driving systems
360°camera .................................. 187
Active Blind Spot Assist ................. 197
Active Lane Keeping Assist ............ 200
Active Parking Assist ..................... 175
ATTENTION ASSIST ........................ 191
Blind Spot Assist ............................ 193
Cruise control ................................ 160
Display message ............................ 244
Driving Assistance Plus package ... 197
HOLD function ............................... 170
Lane Keeping Assist ...................... 195
Lane Tracking package .................. 193
Rear view camera .......................... 182
Traffic Sign Assist .......................... 193
Driving tips
Active Distance Assist
DISTRONIC .................................... 167
Automatic transmission ................. 144
Brakes ........................................... 157
Break-in period .............................. 130
Downhill gradient ........................... 157
Drinking and driving ....................... 156
Driving in winter ............................. 159
Driving on flooded roads ................ 159
Driving on wet roads ...................... 159
Exhaust check ............................... 156
Fuel ................................................ 156
General .......................................... 155
Hydroplaning ................................. 159
Icy road surfaces ........................... 159
Important safety notes .................. 130
Limited braking efficiency on sal-
ted roads ....................................... 158
Snow chains .................................. 332
Subjecting brakes to a load ........... 158
The first 1000 miles (1500 km) ..... 130
Towing a trailer .............................. 203
Wet road surface ........................... 158
DVD video
Operating (on-board computer) ..... 217
see also Digital Operator's Man-
ual .................................................. 268
DYNAMIC SELECT switch
Automatic transmission ................. 139
Climate control (dual-zone auto-
matic climate control).................... 122
E
EASY-ENTRY feature
Function/notes............................. 103
EASY-EXIT feature
Function/notes............................. 103
EBD (electronic brake force distri-
bution)
Display message ............................ 230
Function/notes................................ 72
ECO display
Function/notes............................. 156
On-board computer ....................... 213
ECO start/stop function
Automatic engine start .................. 136
10Index
Page 17 of 370
Memory function
Seats, steering wheel, exterior
mirrors ........................................... 107
Mercedes me connect
General notes ................................ 294
Info call button .............................. 295
Roadside Assistance call button .... 295
Mercedes-Benz emergency call
system
Switch in the overhead control
panel ..............................................294
Mercedes-Benz Intelligent Drive
360°camera .................................. 187
Active Blind Spot Assist ................. 197
Active Distance Assist
DISTRONIC ....................................162
Active Distance Assist
DISTRONIC with Active Steering
Assist ............................................. 168
Active Lane Keeping Assist ............ 200
Active Parking Assist ..................... 175
ATTENTION ASSIST ........................ 191
Blind Spot Assist ............................ 193
General notes ................................ 160
Lane Keeping Assist ......................195
Parking Assist PARKTRONIC .......... 179
PRE-SAFE®(anticipatory occu-
pant protection) ............................... 57
PRE-SAFE®PLUS (anticipatory
occupant protection PLUS) .............. 58
Rear view camera .......................... 182
Traffic Sign Assist .......................... 193
Message memory (on-board com-
puter)..................................................227
Messages
see Display messages
see Warning and indicator lamps
Mirror turn signal
Cleaning ......................................... 309
Mirrors
see Exterior mirrors
see Vanity mirror (in the sun visor)
Mobile phone
Connecting (device manager) ........275
Frequencies ................................... 356
Installation ..................................... 356
Menu (on-board computer) ............ 218
Transmission output (maximum) .... 356
Model type
see Vehicle identification plate
Modifying the programming
(SmartKey)...........................................79
MOExtended tires.............................. 315
Mounting wheels
Lowering the vehicle ...................... 354
Mounting a new wheel ................... 353
Preparing the vehicle .....................351
Raising the vehicle ......................... 351
Removing a wheel .......................... 353
Securing the vehicle against roll-
ing away ........................................ 351
MP3
Operation ....................................... 217
see also Digital Operator's Man-
ual ..................................................268
Multifunction display
Function/notes .............................210
Multifunction steering wheel
Operating the on-board computer .. 209
Overview .......................................... 37
Multimedia system
Switching on and off ......................269
Music files
see also Digital Operator's Man-
ual ..................................................268
N
Navigation
Displaying (on-board computer) ..... 214
Menu (on-board computer) ............ 214
see also Digital Operator's Man-
ual ..................................................268
Notes on breaking-in a new vehi-
cle....................................................... 130
O
Occupant Classification System
(OCS)
Conditions ....................................... 51
Faults ............................................... 54
Operation ......................................... 51
System self-test ............................... 53
Index15
Page 19 of 370
Driving system ............................... 179
Function/notes............................. 179
Important safety notes .................. 179
Problems (malfunctions) ................ 182
Sensor range ................................. 180
Warning display ............................. 181
Parking assistance
see Parking Assist PARKTRONIC
Parking brake
Applying automatically................... 154
Applying or releasing manually ...... 154
Display message ............................ 230
Electric parking brake .................... 154
Emergency braking ........................ 155
General notes ................................ 154
Releasing automatically................. 155
Warning lamp ................................. 262
Parking lamps
Switching on/off........................... 110
PASSENGER AIR BAG
Display message ............................ 237
Indicator lamps ................................ 44
Problems (malfunction) .................. 237
Perfume atomizer
Operating ....................................... 127
Problem (malfunction) ................... 128
Setting the perfume intensity
(multimedia system) ...................... 273
Vial ................................................ 127
Permanent all-wheel drive
see 4MATIC (permanent four-
wheel drive)
Pets in the vehicle............................... 64
Phone book
see also Digital Operator's Man-
ual .................................................. 268
Plastic trim (cleaning instruc-
tions).................................................. 310
Power washers.................................. 306
Power windows
see Side windows
PRE-SAFE®(anticipatory occupant
protection)
Display message ............................ 234
Operation ......................................... 57
PRE-SAFE®PLUS (anticipatory
occupant protection PLUS)
Operation ......................................... 58
Program
see Drive programs
Protection against theft
ATA (Anti-Theft Alarm system)......... 75
Immobilizer ...................................... 75
Protection of the environment
General notes .................................. 27
Pulling away
Automatic transmission ................. 134
General notes ................................ 134
Hill start assist ............................... 135
Trailer ............................................ 135
Q
QR code
Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 32
Qualified specialist workshop........... 31
Quick access for audio and tele-
phone
Changing the station/music
track .............................................. 271
R
RACE START (Mercedes-AMG vehi-
cles).................................................... 171
RACE TIMER (on-board computer,
Mercedes-AMG vehicles).................. 225
Radar sensor system
Display message ............................ 235
Radiator cover................................... 300
Radio
Selecting a station ......................... 216
Radio mode
see also Digital Operator's Man-
ual.................................................. 268
Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 30
Reading lamp..................................... 113
Rear compartment
Setting the air vents ...................... 129
Setting the airflow ......................... 124
Index17
Page 21 of 370
Search & Send
see also Digital Operator's Man-
ual .................................................. 268
Seat
Correct driver's seat position ........... 96
Seat belts
Adjusting the driver's and front-
passenger seat belt .........................47
Adjusting the height ......................... 47
center rear-compartment seat......... 47
Cleaning ......................................... 311
Correct usage .................................. 46
Fastening ......................................... 47
Important safety guidelines ............. 45
Introduction ..................................... 44
Releasing ......................................... 47
Warning lamp ................................. 257
Warning lamp (function) ................... 48
Seats
Adjusting (AMG Performance
Seat) .............................................. 100
Adjusting (electrically) ..................... 98
Adjusting the 4-way lumbar sup-
port ................................................ 100
Adjusting the head restraint ............ 98
Calling up a stored setting (mem-
ory function) .................................. 107
Cleaning the cover ......................... 311
Folding the backrest (rear com-
partment) forwards/back .............. 281
Important safety notes .................... 96
Seat heating .................................. 100
Seat heating problem .................... 101
Seat ventilation .............................. 101
Seat ventilation problem ................ 101
Storing settings (memory func-
tion) ............................................... 107
Securing a load
see Securing cargo
Securing cargo.................................. 283
Selecting a gear
see Automatic transmission
Selector lever
Cleaning ......................................... 311
see Automatic transmission
Sensors (cleaning instructions)....... 309
Service menu (on-board com-
puter).................................................. 219
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 361
Coolant (engine) ............................ 361
Engine oil ....................................... 360
Fuel ................................................ 358
Important safety notes .................. 358
Refrigerant (air-conditioning sys-
tem) ............................................... 362
Washer fluid ................................... 362
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 268
Setting the language
see also Digital Operator's Man-
ual .................................................. 268
Setting the time
see also Digital Operator's Man-
ual .................................................. 268
Settings
Factory (on-board computer) ......... 223
On-board computer ....................... 219
SETUP (on-board computer,
Mercedes-AMG vehicles).................. 224
Side impact air bag............................. 50
Side marker lamp (display mes-
sage)................................................... 239
Side running board
Cleaning ......................................... 309
Side windows
Cleaning ......................................... 308
Convenience closing feature ............ 91
Convenience opening feature .......... 91
Important safety information ........... 89
Opening/closing .............................. 90
Problem (malfunction) ..................... 92
Resetting ......................................... 92
Reversing feature ............................. 90
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 268
Ski and snowboard bag.................... 280
Sliding sunroof
Important safety notes .................... 93
Opening/closing .............................. 93
Problem (malfunction) ..................... 94
Resetting ......................................... 94
Index19
Page 23 of 370
Summer tires
In winter ........................................332
Sun visor............................................ 290
Suspension settings
AIR BODY CONTROL ......................172
Suspension tuning
AMG sports suspension based on
AIR BODY CONTROL ......................174
SETUP (on-board computer,
Mercedes-AMG vehicles) ...............224
Switching air-recirculation mode
on/off................................................. 126
Switching on media mode
Via the device list.......................... 276
T
Tachometer........................................ 209
Tail lamps
Display message ............................ 239
Tailgate
Display message ............................ 254
Emergency unlocking ....................... 89
HANDS-FREE ACCESS ..................... 87
Important safety notes .................... 84
Limiting the opening angle ............... 89
object detection............................... 85
Opening dimensions ...................... 363
Opening/closing (automatically
from inside) ...................................... 88
Opening/closing (automatically
from outside) ................................... 85
Reversing feature ............................. 85
Tank content
Fuel gauge ....................................... 36
Technical data
Capacities ...................................... 358
Drawbar load (maximum) ............... 364
Information .................................... 356
Trailer loads................................... 364
Vehicle data ................................... 363
Telephone
Accepting a call (multifunction
steering wheel) .............................. 218
Authorizing a mobile phone (con-
necting) ......................................... 275
Connecting a mobile phone
(device manager) ........................... 275
Display message ............................ 255
Introduction ................................... 218
Menu (on-board computer) ............ 218
Number from the phone book ........ 218
Redialing ........................................ 219
Rejecting/ending a call ................. 218
see also Digital Operator's Man-
ual .................................................. 268
see Mobile phone
Temperature
Coolant (display in the instrument
cluster) .......................................... 209
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 223
Outside temperature ...................... 209
Setting (climate control)................ 123
Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 223
Timing (RACETIMER)......................... 225
Tire pressure
Calling up (on-board computer) ..... 337
Checking manually ........................ 336
Display message ............................ 250
Maximum ....................................... 336
Not reached (TIREFIT) .................... 318
Notes ............................................. 334
Reached (TIREFIT) .......................... 318
Recommended ............................... 333
Using the TIREFIT kit ...................... 317
Tire pressure loss warning system
General notes ................................ 336
Important safety notes .................. 336
Restarting ...................................... 337
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 339
Function/notes............................. 337
General notes ................................ 337
Important safety notes .................. 338
Radio type approval for the tire
pressure monitor ........................... 340
Restarting ...................................... 339
Warning lamp ................................. 266
Warning message .......................... 339
Tire pressure sensors
Display message ............................ 251
Tire-change tool kit........................... 314
Index21
Page 25 of 370
Quick access for Audio .................. 271
Switching ....................................... 270
Switching input line ....................... 270
Tow-starting
Emergency engine starting ............ 327
Important safety notes .................. 324
Towing a trailer
Axle load, permissible.................... 365
Cleaning the trailer tow hitch ......... 310
Coupling up a trailer...................... 204
Decoupling a trailer ....................... 206
Driving tips .................................... 203
ESP®(Electronic Stability Pro-
gram) ............................................... 71
Important safety notes .................. 202
Installing the ball coupling ............. 204
Lights display message .................. 239
Power supply ................................. 206
Pulling away with a trailer.............. 135
Removing the ball coupling ............ 206
Trailer loads................................... 364
Towing away
Important safety guidelines ........... 324
Installing the towing eye ................ 325
Notes for 4MATIC vehicles ............ 327
Removing the towing eye ............... 326
Transporting the vehicle ................ 326
With both axles on the ground ....... 326
Towing eye......................................... 314
Traction system
see ETS/4ETS (Electronic Trac-
tion System)
Traffic reports
see also Digital Operator's Man-
ual .................................................. 268
Traffic Sign Assist
Activating/deactivating the warn-
ing function .................................... 220
Display message ............................ 247
Function/notes............................. 193
Important safety notes .................. 193
Instrument cluster display ............. 193
Trailer coupling
see Towing a trailer
Trailer loads and drawbar nose-
weights............................................... 206
Trailer towing
Active Blind Spot Assist ................. 199
Active Lane Keeping Assist ............ 202
Blind Spot Assist ............................ 195
Permissible trailer loads and
drawbar noseweights ..................... 206
Transfer case..................................... 150
Transmission
Display message ............................ 253
see Automatic transmission
Transmission oil
Temperature (on-board computer,
Mercedes-AMG vehicles) ............... 223
Transmission position display......... 142
Transporting the vehicle.................. 326
Trim pieces (cleaning instruc-
tions).................................................. 311
Trip computer (on-board com-
puter).................................................. 213
Trip odometer
Calling up ....................................... 212
Resetting (on-board computer) ...... 214
Trunk
see Cargo compartment
Turn signals
Display message ............................ 239
Replacing bulbs (front) ................... 115
Switching on/off........................... 110
Two-way radio
Frequencies ................................... 356
Installation ..................................... 356
Transmission output (maximum) .... 356
Type identification plate
see Vehicle identification plate
U
Unlocking
Emergency unlocking ....................... 84
From inside the vehicle (central
unlocking button) ............................. 83
USB devices
Connecting to the Media Inter-
face ............................................... 277
V
Vanity mirror (in the sun visor)........ 290
Vehicle
Correct use ...................................... 31
Index23
Page 29 of 370
Protecting the environment
General notes
HEnvironmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
The objectives are for the natural resources
that form the basis of our existence on this
planet to be used sparingly and in a manner
that takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are affected
by these factors:
Roperating conditions of your vehicle
Ryour personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
Ravoid short trips as these increase fuel con-
sumption.
Ralways make sure that the tire pressures
are correct.
Rdo not carry any unnecessary weight.
Rremove roof racks once you no longer need
them.
Ra regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
Ralways have service work carried out at a
qualified specialist workshop.
Personal driving style:
Rdo not depress the accelerator pedal when
starting the engine.
Rdo not warm up the engine when the vehicle
is stationary.
Rdrive carefully and maintain a safe distance
from the vehicle in front.
Ravoid frequent, sudden acceleration and
braking.
Rchange gear in good time and use each gear
only up to