GF30.30-P-3001A Variable Speed Limiter, Function
GF30.30-P-3001A Variable Speed Limiter, Function
- Models 129, 140, 163
- except CODE (498) Japan version
- except CODE (494) USA version
- Models 170, 202, 203, 208
- with CODE (440) Cruise Control
- except CODE (498) Japan version
- except CODE (494) USA version
- Models 210, 220, 215, 230, 211, 209
- except CODE (498) Japan version
- except CODE (494) USA version
Vehicle speed signal
ECU transmits the speed signal through the CAN data bus.
Vehicles with EIS control unit without steering column tube module (MRM)
The signals from the variable cruise control's switch unit are detected by the control unit EIS and transmitted over the CAN data bus.
Vehicles without EZS control unit
The signals from the variable cruise control's switch unit are transmitted directly to the engine-management ECU.
Vehicles with steering column tube module (MRM)
The signals from the pushbutton switch on the cruise control variable are detected by the steering column module and transmitted over the CAN data bus.
Function
Supplementary functions of the variable cruise control include:
- variable speed limiter function (VGB) from 30 km/h (20 mph) to vehicle's maximum speed
- Permanent speed limiter from 190 km/h (120 mph) to vehicle's maximum speed
- Excepting Model Series 168 and vehicles equipped with the multifunction steering wheel
- The accelerator pedal must be actuated further
- When the brakes are applied, the variable cruise control is not deactivated
1. Variable speed limiter (VGB)
A slider on the variable cruise control witch unit is used to enable the variable speed limiter mode (LED in the button lights up).
The speed at which the governor becomes active is set at the variable cruise control's switch unit.
If the engine's braking effect should prove insufficient to prevent the vehicle from accelerating beyond the preset speed during steep descents, an acoustic warning sounds to alert the driver that the brakes should be applied. When the ignition is switched OFF the preset speed data remain stored in the variable cruise control system. Vehicles with Distronic (DTR) are braked.
1.1. Activation with vehicle stationary
- Engine ON
- Selector lever in P
- Actuate the sliding part of the cruise control push button, so that the LED lights up.
To use : SET ACCELERATION
The display shows the lowest speed available for programming, 30 km/h or 20 mph. The switch button can then be tapped briefly or held down to raise the maximum speed in increments of 10 kph.
To use : SET DECELERATION
The display shows 30 km/h (20 mph).
To use : SET MEMORY
Activates last stored maximum speed, then raises this speed in increments of 1 kph.
Position : OFF
Shut off
1.2. Activation while driving
- Actuate the sliding part of the cruise control push button, so that the LED lights up.
To use : SET ACCELERATION
The vehicle speed limit is rounded up to the next 10 km/h figure of the speed of the vehicle at that moment, e.g. from 83 km/h to 90 km/h. The switch button can then be tapped briefly or held down to raise the maximum speed in increments of 10 kph.
To use : SET DECELERATION
The maximum speed falls to the next lowest round number, i.e., from 83 kph to 80 kph. By pressing and holding, the speed limit can be lowered in 10 kph increments to 30 kph below the current vehicle speed. The tip function must be used for adjustments beyond this point.
Vehicle speed drops.
To use : SET MEMORY
The last governed maximum speed is reactivated. If the current road speed is more than 30 kph above the currently maximum speed stored in the system, it will not be possible to activate the variable cruise control (the display flashes for approximately 5 s when the button is released). The variable speed limiter cannot be activated in this case, because otherwise the vehicle would have to brake sharply. It is possible to increase the vehicle speed in stages each of 1 km/h.
1.3. The speed limit is deactivated when:
- Moving the cruise control switch into position OFF
- for kickdown with the accelerator pedal
- Moving the sliding switch of the cruise control switch into cruise control position (LED off)
Cruise control deactivation via KICKDOWN:
Of the difference between the speed limit and the current speed is less than 20 km/hour the kickdown is recognized in this range then the variable speed limiter will be switched off (Example. 1).
E.g. 1: VGB=100 km/h, actual speed=83 km/h,
Kickdown, VGB cruise control cancels.
E.g. 2: VGB=100 km/h, actual speed=30 km/h,
kickdown up to 80 km/hour, VGB remains in operation.
The sales designation for the cruise control systems with variable speed control is Speedtronic.
Vehicles with a mechanical transmission and variable speed control are fitted with kickdown recognition.
2. Programmable permanent governed maximum speed except Model Series 168 and vehicles with multifunction steering wheel
The permanent maximum speed governor is available only for speeds between 190 kph and the maximum velocity of the vehicle. The entered figure represents the new "top speed" of the vehicle. The maximum speed programmed using this function is always valid, even when the variable cruise control is off and the cruise control is on.
As the vehicle approaches the programmed top speed, the display starts to flash the programmed figure; the governor function limits the speed. When a permanent top speed has been programmed, the figure flashes briefly in the display when the ignition key is switched on. If the system is set to the vehicle's top speed, no display appears.
To set or change the permanently governed top speed:
- Selector lever in position P
- Engine OFF
- Ignition ON
- Actuate the sliding part of the cruise control push button, so that the LED lights up.
- Pull cruise control switch to STORE position
- Use SET DECELERATION or SET ACCELERATION to change the speed in 5 kph increments.
- Pull cruise control switch into STORE position and hold it in place until the warning buzzer sounds.
- The new top speed is entered and stored in the system.
To delete the permanent governed top speed:
- Selector lever in position P
- Engine OFF
- Ignition ON
- Actuate the sliding part of the cruise control push button, so that the LED lights up.
- Pull cruise control pushbutton switch to STORE position.
- The current figure for the permanent speed limit is displayed (flashes).
- Actuate SET ACCELERATION to increase the value of the speed limit above the maximum speed of the vehicle (Display: "---km/ hour")
- Pull cruise control pushbutton switch to STORE position.
- The warning buzzer sounds
- Permanent speed limit is erased.
For vehicles with a multifunctional steering wheel and multifunctional display the permanent speed limit is replaced by the winter tire limit in the instrument cluster.
