Two things

[Delboy]

Quote from this SSP

From Page 10

"The "stationary vehicle decoupling" function reduces engine output when the vehicle is stopped with a gear engaged by interrupting power transmission. In addition to reducing consumption, ride comfort is enhanced due to the fact that less braking force is required (for more details refer to Part 2 SSP 284, Page 30 onwards)."

Curious how it says its a feature yet its not there???

Edit may have just found the answer

Stationary vehicle decoupling is a special feature of the 09E.
With the vehicle stationary (engine idling) and a gear engaged, the torque converter already transmits a certain torque level. With the brake released, this results in the vehicle "creeping forward". With the brake pressed, the torque transmitted represents a certain loss, as the idling speed has to be kept constant by adjusting the idling torque (further opening of throttle valve).
As well as increasing fuel consumption, constant brake application (a certain pedal force is required to hold the vehicle) results in a loss of comfort.
The stationary vehicle decoupling function reduces the torque converter power flow to the planetary gearbox with the vehicle stationary and the brake applied ("Brake pressed" info from F and F47) by regulating the clutch A.
In addition, stationary vehicle decoupling reduces the noise level with the engine idling as the engine load is lower.
Stationary vehicle decoupling is not activated in reverse gear.
With the current design philosophy, stationary vehicle decoupling is only activated at present in the ATF temperature range between approx. 15°C and 50°C.
Functional description:
Stationary vehicle decoupling is controlled by calculating the converter torque from engine and turbine speeds (speed difference). Further factors in the calculation are the ATF temperature and gradient.
Stationary vehicle decoupling not active:
Vehicle stationary, engine idling and turbine shaft not turning; 100 % speed difference/slip
Stationary vehicle decoupling active:
Vehicle stationary, engine idling and turbine shaft turning at a defined speed difference (approx. 120 rpm); slip approx. 20 %
To ensure immediate, smooth starting, the power flow is not completely interrupted. A low converter torque level is always transmitted, thus eliminating meshing cycles and improving clutch control action.
Stationary vehicle decoupling is deactivated immediately if a gearbox output speed (G195) is detected while the decoupling function is active. The power flow is established before the driver accelerates, thus largely preventing vehicle rollback on slopes.
Brake release ("Brake not pressed" info) also deactivates stationary vehicle decoupling irrespective of other parameters.
Exceeding a defined accelerator pedal value (with brake pressed) deactivates stationary vehicle decoupling.
This permits checking of the stall speed (stall test).