Volvo FM - Differential Lock

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1 Make sure none of the wheels are spinning

2 Set the switch to the lower position.

The control lamp in the instrument panel will light.

J4015829

Differential lock

Function

Firm ground, no differential lock engaged.

J0008648

136

Driving

Main Page

Default Chapter5
- Table of Contents5
Introduction12
- LVD System12
- Ebs12
- Air Suspension12
- Booster13
- Dynafleet13
Running in15
Starting and Stopping16
- Starting Instructions16
- Start the Truck16
- Stopping the Truck17
- Parking18
- Clutch18
- Keys18
- Start the Engine19
- Warming up22
- Change Idling Speed22
- Fuel Heater23
Instruments and Controls24
- Overview24
- Gauges28
- Symbols30
- Lighting and Headlamps33
- Windscreen Wipers36
- Rain Sensor36
- Parking Brake37
- Trailer Brake40
- Electric Trailer Brake40
- Air Suspension41
Information Display44
- General, about the Display44
- The First that Is Shown45
- General, about Messages45
- Information Messages46
- Warning Messages46
- Stop Message47
- Alarm, Warning and Information Symbols47
- Status Symbols51
- Other Symbols52
- Menu Structure53
- Show Menus56
- Step between the Menus56
- Change a Setting56
- Temperature, Outside58
- Temperature, Engine Oil58
- Temperature, Gearbox58
- Voltmeter/Ammeter58
- Gear Position59
- Pressure, Primary Tank59
- Fuel Consumption59
- Leg Data60
- Remaining Fuel60
- Adblue60
- Trip Meter61
- Average Speed61
- Estimated Time of Arrival62
- Time and Date62
- Alarm Clock63
- Driving/Rest Time64
- Black Panel64
- Backlight64
- Favourite Display, Setting65
- Night/Day67
- Vehicle Messages67
- Tyre Pressure67
- Set Wheel ID68
- Set Reference Pressure68
- Reset69
- Ats69
- Start Regeneration69
- Abort Regeneration70
- Activate/Deactivate ATS70
- System Conditions70
- Soot/Ash Level71
- Programming, P-Heater Timer71
- Reset, P-Heater Timer72
- Language72
- Units72
- Time/Date73
- Display Lighting74
- Change Password74
- Traction Control75
- Das75
- Lcs75
- Fleet Limits75
- Ammeter Sensor Calibration77
- Fleet ID77
- Trailer Detection78
- Day Running Lights Automatic79
- Draining/Priming79
- Fault Diagnostics80
- Instrument Panel Cluster Self Test81
- Part Number82
- Vehicle Data83
- Vehicle ID83
- Total Value84
- Trip Data84
- Reset Trip Data85
- Password85
- Service Reminder86
- Estimated Lining Wear88
- Monitoring of the Wheel Brakes89
- High Brake Temperature Warning89
- Resetting Fault Codes89
- Position and Content91
- Display92
- Display Control Stalk93
- General, about Messages93
- Information Messages93
- Warning Messages94
- Stop Message94
- Acknowledge Messages94
- Alarm, Warning and Information Symbols95
- Status Symbols99
- Other Symbols100
- Gear Position100
- Temperature, Outside100
- Engine Oil Pressure100
- Temperature, Engine Oil100
- Voltmeter/Ammeter101
  - Fuel Consumption101
  - Leg Data101
  - Remaining Fuel102
  - Adblue102
  - Trip Meter102
  - Average Speed103
  - Driving/Rest Time103
  - Time and Date103
  - Menu Structure104
  - Black Panel104
  - Night/Day105
  - Backlight105
  - Contrast105
  - Language105
  - Units106
  - Time/Date106
  - Program107
  - Reset107
  - Traction Control108
  - Day Running Light108
  - Draining/Priming108
  - Fault Diagnostics108
  - Part Number110
  - Calibration ID110
  - Service Reminder110
  - Numeric Language, General113
  - Display Control Stalk113
  - Text Strings114
  - Stop Message114
  - Change Language115
  - Menus, General115
  - Password-Protected Menus115
  - Menus Available When Driving115
  - Menus with Stationary Vehicle119
  - Numerical Translation Table127
Driving 127138
- Driving Hints138
- Hill Start Aid141
- Reversing Camera142
- Reversing Warner144
- Traction Control System (TCS)144
- Front Wheel Drive146
- Differential Lock147
- Differential Lock151
- Differential Locks154
- Automatic Engagement of the Differential Lock (DLC - Diff Lock Control)157
- Auxiliary Brakes159
- Brake Blending163
- Abs163
- ESP - Electronic Stability Program164
- Control of Engine Torque164
- Brake Lining Wear Equalisation165
- Panic Braking Function165
- Manual Gearbox165
- Hydraulic Bogie Lift169
- Bogie170
- Tridem176
- Steered Rear Axle179
- Cruise Control180
- Constant Engine Speed Control181
- Lane Keeping Support181
- Lane Change Support183
- Driver Alert Support185
- Power Take-Off187
- High Range Lock-Up190
- High Range Lock-Up192
- Tying down the Truck on a Ferry193
- Ride Height Memory198
Adr 193204
- General204
- Turn off the Power204
- Turn on the Main Switch205
- Turn on Power for 20 Minutes206
Adaptive Cruise Control 197208
- General208
- Engaging ACC209
- Disengage ACC210
- Inactivate ACC210
- Change Speed210
- Change the Time Gap211
- When the Truck Itself Adjusts the Speed212
- When the Vehicle Must be Braked Manually213
- Brake Protection213
- Driving at Low Speed214
- If the ACC Does Not Work215
Powertronic 205216
- Powertronic, General216
- Gear Shifter216
- Buttons217
- Display218
- Driving Programs220
- Automatic Gear Changing220
- Kickdown221
- Manual Gear Changing221
- Select Starting Gear221
- Autoneutral222
- Brake Interlock222
- Dual Driver Stations223
- Auxiliary Brakes223
- Actions with Gearbox Malfunction223
- Reversing with Loads223
- Rocking Free224
- Marshalling224
- Idling Speed224
- Oil Temperature225
- Retarder Temperature225
- Oil Pressure226
- Oil Filter226
- Checking the Oil Level226
I-Shift 217228
- I-Shift, General228
- Gear Selector228
- Buttons230
- Display231
- Program Packages233
- Automatic Shifting236
- Manual Shifting239
- Reverse Gears240
- In Case of Gearbox Malfunction241
- Starting on Hills241
- Driving off Road242
- Clutch242
I-Shift243
- I-Shift, General243
- Program Packages243
- Function Description245
- Gear Shifter247
- Buttons249
- Display250
- Automatic Gear Change252
- Manual Gear Changing257
- Reverse Gears258
- Actions with Gearbox Malfunction259
- Fuel Economy Driving259
- Hill Start261
- Driving on Poor Roads and in Difficult Conditions262
- Disengaging262
- Starting When Stuck262
- Full VEB/VEB+ in Manual Mode264
- Extra Down-Changing for Maximum Engine Brake in Low Gears264
- Changing Driving Direction264
- Driving with the Gearbox-Mounted Power Take-Off Engaged264
- Rocking to Empty the Platform265
- Driving on Rollers265
Loading and Unloading 255266
- General266
- Ride Height Control266
- Loading and Unloading Height Memory269
- Quick Unloading276
- Using the Air Suspension with the Ignition Turned off278
- Loading and Unloading with the Main Switch off281
- Fetch the Swap Body287
- Leave the Swap Body292
- Fetch a Container295
- Deliver a Container297
- Load Indicator298
Exhaust Cleaning 291302
- General302
- Driving a Truck with a Euro 4 or Euro 5 Engine305
- Filling with Adblue308
- Cleaning the Adblue Tank310
- Diesel Particulate Filter310
Cab 303314
- Air Suspension Equipment314
- Seats320
- Adjusting the Steering Wheel324
- Doors325
- Central Locking327
- Main Switch329
- Air Conditioning ECC (Electronic Climate Control)329
- Air Conditioning MCC (Manual Climate Control)334
- Climate Control System HEAT337
- Cab Heater PH-CAB339
- Cab and Engine Heater PH-ENGCA344
- Rest Heater SS-HEAT352
- Luggage Compartment Hatch354
- Electrically Operated Sun Roof355
- Lighting355
- Electrical Power Outlet362
- Bunk Bed362
- Lower Bunk363
- Smoke Detector364
- Tilt the Cab365
- Mobile Telephone, Communication Equipment370
- Alarm on370
- Alarm Without Motion Detectors371
- Alarm off372
- Starting the Assault Alarm372
- Switching off the Assault Alarm373
- Go into Service Mode373
- To Get out of Service Mode374
- Assistance Button374
364 Refrigerator375
- Safety Instructions375
- General375
- Usage375
- Starting the Refrigerator376
- Turning off the Refrigerator376
- Voltage Protector376
- Tilting the Cab377
- Cleaning377
- Defrosting377
- Interior Lighting377
- Fault Tracing378
- Tips on Saving Energy378
- Technical Specifications378
368 Fridge379
- Safety Instructions379
- General379
- Usage379
- Starting the Refrigerator Box380
- Switching off the Refrigerator Box380
- Voltage Protector380
- Tilting the Cab381
- Cleaning381
- Defrosting381
- Fault Tracing381
- Tips on Saving Energy382
- Technical Specifications383
Alcolock 373384
- Start up384
- Restarting the Vehicle386
- Sharing a Vehicle387
- Energy Conservation391
- Volume Control392
- Language Selection393
- Dates394
- General Messages and Errors394
- Technical Messages and Errors395
386 Radio/CD397
- Safe Operation of the Radio397
- Introduction397
- General Overview398
- Main Functions406
- Tips and Tricks416
- Main Functions416
- Tips and Tricks439
430 Telephone441
- Getting Started441
- Calling443
- While Making a Call446
- Managing Messages447
- Menus449
- Measures with Malfunctions454
444 Booster455
- Installation455
- Methods of Use455
- Fuses455
- Indicator Lamps455
- Subwoofer Controls and Switch456
- Fault Tracing456
Dynafleet 447458
- Technical Description459
- Controls461
- Display463
- Menus and Symbols464
- Using the Menus465
- Starting the System466
- Shutting off the System - Stand by467
- Transferring Data467
- General468
- Mail468
- Mail Menu469
- General Driving and Resting Times470
- Orders472
- Logs473
- Driver Coaching475
- Emergency & Assistance476
- Tachograph Download Menu476
- Settings478
- System Errors and Warnings479
470 External Equipment481
- Roof Air Deflector, Setting Instructions481
- Short Low Cab FH483
- Long Low Cab FH484
- Globetrotter FH485
- Roof Air Deflector, Setting Instructions487
- Globetrotter XL FH489
- Roof Air Deflector, Setting Instructions494
- Short Low Cab FM496
- Long Low Cab FM497
- Globetrotter FM498
- Globetrotter LXL FM499
- Front Mirror501
- Ladder502
- Side Underrun Guard503
- Lower the Spare Wheel505
- Raise the Spare Wheel506
- Spare Wheel Retainer Behind the Cab507
- Turntable, General Advice510
- Couple the Trailer511
- Moving the Turntable513
504 Maintenance515
- General Information515
- Checks before Driving515
- Checks When Fuelling519
- Changing Wiper Blades520
- Replace the Battery in the Remote Control521
- Changing Bulbs521
- Engine Wash527
- Washing the Chassis527
- Wash the Cab527
- Polishing and Waxing528
- Care of Upholstery529
- Paintwork Damage530
- Care of Aluminium Rims532
- Care of Steel Rims532
- Tools533
- General Information about Oils and Greases534
- Engine536
- Fuel System541
- Diesel Fuel- Quality and Function542
- Changing Fuel Filter547
- Filter for Fuel Tank Ventilation548
- Priming the Fuel System548
- Draining the Fuel Tank549
- Changing Filter550
- Drain the Cooling System553
- Service Intervals555
- Anti-Freeze555
- Fill with Coolant in an Empty System556
- Viscous Fan556
- Electrically Controlled Fan556
- Check the Drive Belts (Multi-V)557
- Working on the Electrical System557
- Instructions for Electrical Welding558
- Connection of Electrical Accessories559
- Checking Electrolyte Level in Batteries560
- Charge Status561
- Specifications for the Electrical System562
- Manual Gearbox and I-Shift563
- Automatic Gearbox570
- Transfer Gearbox573
- Driving Front Axle577
- Flywheel Mounted Power Take-Off581
- Compact Retarder582
- Air Drier, General586
- Checking the Air Drier587
- Charging with Air from an External Compressed Air Source588
- Brake Lining588
- Servo Steering589
- Hydraulic Pusher Axle and Trailing Wheel Axle590
- Rear Axle591
- Rear Axle with Hub Reduction598
- Tyres599
- Changing Wheels604
- Disc Wheel for Disc Brakes611
- Painting Rims612
  - Spare Wheel in Combi-Box613
  - Snow Chains613
  - Hydraulic Bogie Lift614
  - Bodywork614
  - Cab Tilt Pump615
  - Central Lubrication615
  - Changing Air Filter for Air Conditioning System616
  - Refrigerant617
  - Parking Heater617
  - Chassis Lubrication618
  - Type Plates, Location626
Fuses and Relays 617628
- General628
- Electrical Distribution Unit, Left-Hand Drive Trucks629
- Electrical Distribution Unit, Right-Hand Drive Trucks630
- Main Fuses631
- In Relay and Fuse Box633
- To Superstructure637
628 If Something Happens639
- Air Suspension in Locked Mode639
- Airbag641
- Warning Signs and First-Aid642
- Fire Extinguisher642
- Starting with Starting Cables643
- Towing646
- Back-Up Function652
- In Case of Gearbox Malfunction652
- If the Vehicle Gets Stuck653

Volvo FM - Differential Lock

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