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Home >> BMW >> 2012 >> 740Li >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering >> Chassis Dynamics -- Overview - F01/F02 >> F01 Cruise Control Systems >> Functions >> Technical Networking Overview >> Active Cruise Control with Stop&Go Function >> Operation and display

Operation and display

ACC Stop&Go and DCC are activated/deactivated in a very similar way. The driver is able to activate ACC Stop&Go not only while the vehicle is in motion, but also when the vehicle is stationary, provided the system has detected another vehicle in front. To activate ACC Stop&Go at a standstill, the driver has to depress the brake pedal and press the SET or RES button at the same time. The activation conditions that applied to the E6x LCI similarly apply here:

Fig 1: Identifying Buttons And Switches Of Active Cruise Control System
G06925054Courtesy of BMW OF NORTH AMERICA, INC.
INDEX REFERENCE CHART

Index Explanation
1 SET button to activate
2 Button for reducing the distance
3 Rocker switch to change the set speed
4 Button for increasing the distance
5 I/0 button to switch on and off
6 RES button to resume a stored set speed

If Dynamic Stability Control was inactive before, in the F01/F02 it is activated as soon as ACC Stop&Go is activated. At the same time, the "Dynamic Performance Control" automatically changes to "Normal" mode (same behavior as for DCC).

Similarly, ACC Stop&Go cannot be deactivated by means of the I/0 button while the vehicle is stationary unless the brake pedal is depressed at the same time.

NOTE: In the F01/F02, the adjustment range for the set speed is 30 km/h (18 mph) to 230 km/h (142mph).

By comparison with DCC, a vehicle with ACC Stop&Go has an MFL button pad that additionally features two buttons for making distance adjustments.

Each (short) button stroke to change the distance increases the desired distance used by ACC Stop&Go for its control process by one increment at a time. A total of four increments are available to the driver.

The most important display functions of ACC Stop&Go in the F01/F02 are illustrated below.

As with DCC, the display symbols for ACC Stop&Go are supplemented by messages displayed below the speedometer as and when necessary.

If the vehicle is equipped with the head-up display option, the ACC displays also appear there, provided the driver has configured them to do so.

Fig 2: Display Indicator For ACC Stop & Go
G06925055Courtesy of BMW OF NORTH AMERICA, INC.
INDEX REFERENCE CHART

Index Explanation
A "Standby" state
B "Active" state
1 Orange LED: set speed of 130 km/h (81 mph) stored
2 Lines that indicate "standby" mode
3 Green LED: set speed of 130 km/h (81 mph) selected by the driver (the speedometer needle is not pointing at the LED here because the vehicle in front is travelling slower than the set speed)
4 Car symbol: vehicle ahead detected by ACC Stop&Go
5 Bars: represent the distance increment selected by the driver
6 Set speed displayed numerically: briefly displayed at the time of function activation or whenever the set speed is changed