Econic Online Operating Instruction

Driving tips

Running-in

Do not subject the engine to its full load during the running-in period. This has a significant effect on the service life, operating safety and economy of the vehicle.

Up to 2,000 km:

  • Run the vehicle in gently. Drive at varying road and engine speeds.

  • Avoid high engine speeds. Do not drive at more than ¾ of the maximum road speed for each gear.

  • Change gear in good time. Do not shift down to brake the vehicle.

After 2,000 km: gradually bring the vehicle up to full road and increased engine speeds.

 

Driving the vehicle

Risk of accident

The vehicle's driving, braking and steering characteristics vary with the type of load, the weight and the centre of gravity of the load.

Make sure that the vehicle is loaded evenly and avoid uneven load distribution. If necessary, secure the load against slipping. You could otherwise lose control of the vehicle and cause an accident.

In addition, you need to observe the permitted loads for axles and wheels (half of the permitted axle load) and the maximum permitted gross vehicle weight. Otherwise there is a danger of damage to the tyres, chassis and axles.

Check the display, the indicator lamps and level indicators on the instrument panel from time to time during the journey.

 

Driving off-road

When driving, especially off-road, make sure that the drive wheels always have sufficient grip.

Do not allow the drive wheels to spin (this could cause damage to the differential).

Engage the differential locks more.

Driving too fast over rough terrain can cause damage to the vehicle. Obstacles may not be recognised in time and you will not be able to assess the condition of the ground correctly.

Obstacles, such as tyre tracks that are too deep, can damage the following parts:

  • axles

  • propeller shafts

  • fuel tank

  • compressed-air reservoirs

  • engine

  • transmission

Therefore, always drive slowly over rough terrain. Have the co-driver direct you if you have to drive over obstacles.

Always observe the vehicle's ground clearance. Avoid obstacles where possible.

Risk of accident

If you drive too quickly off-road, you will be unable to recognise obstacles in due time or judge ground conditions correctly. Always drive slowly off-road to avoid damage to the vehicle.

The vehicle could skid sideways, tip and overturn. Never drive at an angle along a slope. Always follow the line of fall. Do not turn your vehicle. If it cannot manage a hill, drive backwards in reverse gear.

Switching to transmission neutral position on a hill, depressing the clutch pedal and trying to brake the vehicle using only the service brake may cause you to lose control of your vehicle. Never let the vehicle roll.

Overloading the vehicle will increase the risk of the vehicle tipping over. Do not exceed the maximum permissible axle loads under any circumstances. When loading the vehicle, keep its centre of gravity as low as possible.

If the vehicle is frequently or mainly operated on muddy or marshy terrain, substances that impair braking efficiency, such as sand or oil mixed with water, could get into the brake system. This may lead to excessive wear and a reduction in braking efficiency. There is a risk that full braking power is not at your disposal in the event of an emergency.

Carry out a short brake test after each time you drive off-road. If you detect a reduced braking effect or hear grinding noises, have the brake system checked at a qualified specialist workshop, for example, at a Mercedes-Benz Service Centre.

Risk of injury

When driving off-road, your body is affected by forces from all directions, caused by the uneven surface. There is a danger that you could be thrown off your seat and sustain an injury. Always wear a seat belt, even when driving off-road.

Driving systems for driving off-road

The following driving systems and equipment assist in safe operation of the vehicle when driving off-road:

  • ASR deactivation more

  • Differential locks more

Rules for driving off-road

Risk of injury

When driving over obstructions or ruts, the steering wheel could kick back and injure both thumbs. Always hold the steering wheel cross firmly with both hands. Be prepared for increased steering forces when driving over obstructions.

  • Before driving off-road, stop the vehicle and engage a low gear.

  • Do not drive off-road with the engine switched off or without a gear engaged.

  • Drive slowly and smoothly. It may often be necessary to drive at walking pace.

  • Always ensure that the wheels remain in contact with the ground. Switch on the differential lock.

  • Do not declutch or change gear on hills.

  • Exercise the utmost caution when driving across unfamiliar, unpredictable terrain. As a precaution, get out of the vehicle to take a look at the ground first.

  • Check the depth of water before fording.

  • Watch out for obstacles such as rocks, holes, tree stumps and tyre ruts.

  • Avoid edges where the surface may break away.

Driving on inclines
  • Never drive along the line of fall at an angle on slopes or hills. The vehicle could slip to the side, overturn and roll over when driving at an angle.

  • Only brake once the vehicle is on the line of fall.

  • If the braking effect of the engine is insufficient when driving downhill, gently depress the brake pedal.

Before driving off-road

  • Switch on the differential lock more.

  • Switch off the acceleration skid control system (ASR) more.

  • Safely stow or secure any items of luggage or loads.

You should also always carry a shovel and a recovery rope with shackle in the vehicle.

After driving off-road

Risk of accident

Damage caused by driving off-road may lead to consequential damage, the failure of assemblies or accidents. Clean and check the vehicle after every off-road trip. Repair any damage before using the vehicle again.

  • Disengage the differential lock more.

  • Switch on the acceleration skid control system (ASR) more.

  • Clean the vehicle more.

  • Inspect the vehicle for damage.

 

Fuel consumption

Fuel consumption depends on:

  • the type of fuel used (diesel fuel, FAME fuel)

  • the vehicle design

  • the driving style

  • the operating conditions

You can call up fuel consumption figures in the on-board computer.

Vehicle design

The following components influence fuel consumption:

  • Tyre size, tyre tread, tyre pressure, tyre condition

  • Body, wind deflector

  • Gear ratios in the drive train

  • Additional equipment (air conditioning, auxiliary heating, PTO, viscous fan)

Driving style

To keep fuel consumption low:

  • avoid frequent acceleration and braking

  • anticipate road and traffic conditions

  • stay within the economical engine speed range

Operating conditions

Fuel consumption is increased under the following conditions:

  • Mountainous terrain

  • Dense urban traffic and frequent short journeys

  • Vehicle load

  • Operation when stationary

  • Frequent cold starts

For these reasons, no exact figures for any individual vehicle's fuel consumption can be provided.

 

AdBlue consumption

AdBlue consumption is approximately 4% of fuel consumption when BlueTec®4 is used, and approximately 6% with BlueTec®5.

 

Engine oil consumption

When the engine is run in, oil consumption may reach 0.5 % of the vehicle's fuel consumption. A longer distance covered and more arduous operating conditions could result in certain vehicles exceeding this value.

 

Limit speed

For vehicles with a limit speed, the maximum speed is set to 90 km/h. This value may vary in accordance with legal requirements in individual countries. The engine speed is automatically limited when the restricted top speed is reached (take this into account when overtaking).

Risk of accident

If the driver exceeds the vehicle's maximum speed, there is a risk that articulated vehicles may sway. You could also overload the vehicle’s brakes and tyres. There is a risk that you could lose control of the vehicle and cause an accident, particularly if you are driving down a long steep incline with a laden vehicle.

You are responsible for ensuring that the legal maximum permitted speed is not exceeded. Downshift in good time and engage the engine brake to make full use of the engine braking effect on long downhill sections. Bring the vehicle to a halt in good time.

 

Reverse warning device

The reverse warning device is an acoustic warning system. The reverse warning device is triggered and emits a warning tone when reverse gear is engaged.

The reverse warning device may be installed in the tail lights or the cross member.

Risk of accident

The reverse warning device does not relieve you of the obligation to make sure that there are no persons or obstacles behind the vehicle.

If necessary, a second person should assist during manoeuvring. This ensures that no persons behind the vehicle are overlooked and possibly injured while manoeuvring and that no objects are damaged.

Reducing the volume of the reverse warning device

  

Engage reverse gear twice within 4 seconds.

 

The volume is reduced.

 

Warning buzzer

The warning buzzer sounds in addition to the warning indicator in the display if:

  • the coolant level is too low or the permissible coolant temperature (approximately 105 ) is exceeded. At the same time, the status indicator will light up in yellow or red. The operating reliability of the engine is therefore jeopardised.

  • there is a display failure. Important operating information, warning displays or service indicators can no longer be displayed. The display shows the system abbreviation for electronic systems and a text message.

STOP lamp

The warning buzzer sounds in addition to the warning message in the display and STOP lamp lights up if:

  • the engine oil pressure is too low

  • the engine oil level is too low

  • the catalytic converter in vehicles with a natural gas engine reaches a temperature of 700 .

At the same time, the status indicator will light up in red.

The operating safety of the engine is endangered if the engine oil pressure or engine oil level warning is displayed, the warning buzzer sounds and the STOP lamp lights up.

Do not pull away or, if the vehicle is already in motion, stop as soon as possible, paying attention to road traffic conditions.

Determine the cause.

If necessary, have the defect checked and repaired at a qualified specialist workshop.

Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose.