Other Modes
Adaptation
The transmission control module monitors each shift during all driving conditions to fulfill consistent and smooth shifting. This is carried out by the control module either lowering or increasing the hydraulic line pressure used during the shift itself. The changed pressure levels are stored in the control module memory when the car has been switched off and are retrieved on start-up. This provides improved shifting comfort and increased service life.
Complete adaptation occurs when the following conditions have been met:
- throttle opening is steady
- oil temperature between 65 °C and 110 °C.
Temperature controlled lock-up
If the transmission temperature increases abnormally as a result of heavy load under high ambient temperature conditions, the torque converter lock-up function is activated as often as possible. This reduces slippage and the generation of heat in the transmission. The lock-up function will not be used if the temperature drops below +20 °C.
Slipping lock-up
This function ensures smoother engagement with reduced vibration and decreased noise when a gear is engaged. In this mode, the torque converter clutch is engaged, but not fully locked.
The following conditions must be met in order for the function to activate:
- the gear selector in position or
- gear 3, 4 or 5
- the transmission input speed is 1100 RPM or more and the throttle opening is 20 - 35% depending on the engine version
- the transmission oil temperature is 40 - 120 °C.
Due to the torque converter slipping between 50-200 RPM, the friction properties of the transmission fluid are very important. The transmission fluid differs from conventional ATF oil properties. Always use the specified fluid for this transmission. Failure to do so may compromise the function and set a diagnostic trouble code (DTC).
The engine coolant must reach a certain temperature before the function engages.
Driving uphill
The Transmission Control Module can change the gearshift pattern slightly when driving uphill. This is to avoid close gearshifts.
Alternative driving programs
There are driving programs that are implemented in the transmission but that only are active on certain variants.
Kick-down
When the accelerator pedal is pressed down past a certain point, the Kickdown function is activated. This means that downshifting takes place to get faster acceleration. The pedal position for Kickdown is designated as 110%.
Quick step
Quick step makes the gearshifting function sportier when the driver is more aggressive on the pedal. Lower gears are used for better acceleration.
Fast Off
Fast Off is used to reduce the number of shifts due to heavy traffic in, e. g., city traffic.
The function is activated at fast releases of the accelerator pedal. Even the vehicle's speed, brake pedal, and curve detection affect its function. By keeping a lower gear than normally, unnecessary shifts are avoided. For aborted passing, a lower gear is maintained to be able to take the initiative for future passing.