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Combination switch for retarder and cruise control (option
Driver's area controls
7 Wipe and wash: Press the sleeve on the steering column switch towards the steering column: With windscreen wipers switched off = windscreen wipe and wash.
Combination switch for retarder and cruise control (option)
Drive cruise control
M54_00-0976-01 To activate drive cruise control: Precondition: Bus travelling faster than 10 mph (15 km/h). The service brake pedal must be fully released and the continuous brakes must not be active. 1.1 Tap briefly (< 0.5 seconds) = current driving speed is set and appears on the display screen. Tap briefly again (< 0.5 seconds) = set speed increased in increments of 0.5 km/h. Press and hold (> 0.5 seconds) = bus speed increased until switch released. When the combination switch is released, the current speed is set as the new value. 1.2 Tap briefly (< 0.5 seconds) = current driving speed is set and appears on the display screen, or resumption of last stored speed. Tap briefly again (< 0.5 seconds) = set speed reduced in increments of 0.5 km/h. Press and hold (> 0.5 seconds) = bus speed reduced until switch released. When the combination switch is released, the current speed is set as the new value.
1.3 Cruise control is deactivated and the last stored speed is retained by the control unit.
Note:
Drive cruise control is deactivated automatically as soon as the service brakes or continuous brakes are operated or the neutral button is pressed.
Danger.
Do not use cruise control on a slippery road surface there is a risk of skidding. Do not use cruise control unless road and traffic conditions permit a constant speed to be maintained.
Note:
On steep uphill or downhill gradients, it may not be possible for a constant speed to be maintained. Driver's area controls
Variable speed limiter
M54_00-0976-01 1.4 Tap briefly = speed limiter (LIM): The current speed is set as the maximum speed. The set speed is shown on the display screen. The driver has to continue to use the accelerator pedal. Press and hold: The set limit speed will continue to be increased until the control is released. To deactivate: Move combination switch to position 1.3 or activate cruise control.
Note:
The speed limiter can be activated at speeds above 6 mph (10 km/h); between 6 mph (10 km/h) and 10 mph (15 km/h) it is always limited to 10 mph (15 km/h). It is possible to override the set speed temporarily by depressing the accelerator pedal beyond the stop (kickdown).
Continuous brakes
To activate the continuous brakes: 2.12.5 Retarder stage 1 - 5 active
Danger.
Do not activate the continuous brake (retarder) on a slippery road surface. The wheels could lock - risk of skidding.
Driver's area controls
Danger.
If the accelerator pedal is operated while the continuous brakes are active, the continuous brakes will be deactivated and the braking effect will be cancelled.
Caution:
Only ever move the combination switch through one stage at a time when attempting to achieve the necessary braking torque (do not jerk it directly to the required position). Except in an emergency, it is prohibited to force the combination switch directly to the required position in one action. However, it is acceptable to skip several stages at once if you are reducing the braking torque. For the optimum braking torque to be achieved, the engine should be turning within its upper speed range so that the coolant does not overheat.
Brake cruise control
M54_00-0976-01 The retarder maintains the speed of the bus at the set cruising speed to the extent that the retarder's maximum braking torque is sufficient for this to remain possible. To activate brake cruise control: Precondition: Retarder stage 1 - 5 (position 2.1 - 2.5) activated. Accelerator pedal and brake pedal fully released.
1.1 Tap briefly (< 0.5 seconds) = current driving speed is set and appears on the display screen. Tap briefly again (< 0.5 seconds) = set speed increased in increments of 0.5 km/h. Press and hold (> 0.5 seconds) = set speed increased until switch released. When the combination switch is released, the current speed is set as the new value. 1.2 Tap briefly (< 0.5 seconds) = current driving speed is set and appears on the display screen. Tap briefly again (< 0.5 seconds) = set speed reduced in increments of 0.5 km/h. Press and hold (> 0.5 seconds) = set speed reduced until switch released. When the combination switch is released, the current speed is set as the new value. Driver's area controls
Combined cruise control
M54_00-0976-01 To activate combined cruise control: Set drive cruise control and press in button 1.4 on the combination switch at the same time: The current speed (e.g. 88 km/h) is set as the cruising speed and shown on the display screen, and brake cruise control is automatically set to a value that is 4 km/h higher than the cruising speed (i.e. 92 km/h). The system switches between modes of operation automatically as required. The display on the display screen changes to one value or the other depending on the mode of operation. Alternatively: Set brake cruise control and press knob 1.4 on the combination switch in at the same time: The current speed (e.g. 100 km/h) is set as the limit speed and shown on the display screen, and drive cruise control is automatically set to a value that is 4 km/h lower than the limit speed (i.e. 96 km/h). The system switches between modes of operation automatically as required. The display on the display screen changes to one value or the other depending on the mode of operation.
Engine speed increase
Precondition: Bus stationary, engine running. 1.1 The engine speed can be increased up to a maximum of 750 rpm. 1.3 Engine speed increase off, normal idling speed
