| Notes on “6-speed automatic gearbox 0B6” |
| t
| The 6-speed automatic gearbox 0B6, four-wheel drive, has six hydraulically actuated forward gears. When the torque converter lock-up clutch closes, these forward gears act as mechanically driven gears since the slippage in the torque converter is prevented. |
| t
| A special feature of the 0B6 gearbox is the location of the front final drive (front axle differential with flange shafts) in front of the torque converter. This allows for a more even weight distribution between the front and rear axles on the vehicle. |
| The torque converter is equipped with a lock-up clutch allowing controlled slip. Due to the new construction in this gearbox the torque converter is located behind the front final drive. |
| The mechatronic unit incorporates the following components as a complete synchronised unit: |
| t
| Hydraulic control system, automatic gearbox control unit -J217- |
| t
| Multifunction switch -F125- |
| The mechatronic unit is installed in the gearbox within the oil pan. |
| Automatic gearbox control unit -J217- |
| The control unit is part of the mechatronic unit in the gearbox. |
| The gear change points are calculated automatically (depending on the driving situation and the resistance to motion). |
| t
| Gear change points controlled for enhanced fuel economy |
| t
| Maximum engine output is always available |
| t
| Individual adaptation of gear change points in all driving situations |
| t
| Gear change points are infinitely variable |
| Before performing repairs to the automatic gearbox, determine the cause of the fault as precisely as possible using “Guided Fault Finding”. |
| Variation of gear-change points for gradients |
| An additional gear change map automatically selects gear changes for gradients. The gear changes are selected according to accelerator pedal position and road speed. |
| t
| Gear change map for extreme uphill gradients is matched to engine output. |
| t
| Gear change map for extreme downhill gradients is matched to the braking effect of the engine. |
| t
| The driver can achieve an increased engine braking effect by directly selecting a specific gear via the tiptronic function, e.g. when towing a trailer on downhill gradients. |
|
|
|
