Traction Control System

 Traction control system (TCS)

With the traction control system (TCS), you get better stability and traction. The traction control system automatically reduces wheelspin by reducing the engine torque. At speeds below 40 km/h, the traction control system also works as an automatic limited slip differential clutch and applies the brakes on the wheel that is spinning.

Symbol in the display when the traction control system is active.

You control the traction control system with a key on the traction control panel

The traction control system (TCS) key.

If the traction control system was off when the truck was switched off, it will remain off when the truck starts again. If the traction control system was on with normal function or in off-road mode, it will be on with normal function when the truck restarts. 

Normal function

When the traction control system is on with normal function, the indicator lamp in the TCS key is off.

Off-road mode

To improve traction on difficult surfaces such as on sand, gravel or snow, set the traction control system to off-road mode. In off-road mode, the traction control system is less sensitive and allows a little more wheel slip. Thus, the tyres can better "dig" their way forward without the engine torque being reduced.

Note

Do not use the off-road mode during normal driving.

To set the traction control system to off-road mode, press the TCS key. The indicator lamp in the TCS key comes on with a steady light.

To return to normal function, press the TCS key again.

Switching off

To prevent any engine torque limitation or wheel slip control by braking, the traction control system can be switched off.

To switch off the traction control system, press and hold the TCS key. The indicator lamp in the TCS key comes on with a flashing light

Symbol in the instrument display when the traction control system is off.

To return to normal function, press the TCS key.

Disabling

When testing on a roller bench or when towing with one axle raised, it is not enough to switch off the traction control system. Instead, it must be disabled.

In the Vehicle Settings menu, you can disable the traction control system by setting Roller Bench Mode to on. The truck must be stationary.

How to find the Vehicle Settings menu

Side display

The next time the starter key is turned to the drive position or when the wheels on the front axle turn faster than 12 km/h, the roller bench mode is automatically turned off. When the roller bench mode is turned off, the traction control system returns to normal function.

Note

When roller bench mode is on, you cannot control the traction control system with the TCS key on the traction control panel.

After a wheel change

If you change wheels on a driven axle and if the new wheels are smaller than the old ones, it can trigger the traction control system to activate.

To rectify the problem, the electronic braking system must learn the difference in size between the wheels. The system automatically does this when you drive the truck at more than 25 km/h for a distance. How far the distance needs to be depends on, for example, the difference in size between the wheels.

Until the electronic braking system has learnt, it may be difficult to drive the truck due to the traction control system limiting the engine torque. If so, set the the traction control system to off-road mode. The off-road mode allows a greater difference in wheel speed between the front axle and the driven axle. When the off-road mode is activated, it takes longer for the electronic braking system to learn the difference in size between the wheels.