Automatically Shifted Manual Transmission/Transaxle: Description and Operation

Notes on the direct shift transmission 02E, 02E, 6 Speed Direct Shift A/T, AWD

Transmission
The direct shift transmission 02E is also referred to as a dual-clutch transmission. The engine torque is transferred to the transmission via the dual-mass flywheel. The set-up of the transmission is the same as that of a 6-speed manual transmission. The two multi-plate "wet" clutches are regulated hydraulically and actuated alternately so that the transmission is operated like an automatic transmission, i.e. the gears are engaged automatically or manually via Tiptronic. There is no clutch pedal. For more detailed information refer to the relevant Self-Study Program.

Safety functions of the transmission control module
If one or more of the system components or sensors fails, the Transmission Control Module (TCM) -J217- will switch to a corresponding back-up mode, or emergency running program. This enables the transmission to continue operating without becoming damaged, but will impair the operation and smoothness of the gearshifts. For more detailed information refer to the relevant Self-Study Program.

Selector mechanism
On an automatic transmission, information regarding the selector lever position is transmitted via the selector lever cable and the multi-function switch. The dual-clutch transmission, however, has a separate control module in the selector mechanism to transmit information on selector lever positions and gear shifts to the transmission control module via the CAN bus. This means that gear shifts are effected without a cable. Exception: In selector lever position "P" the selector lever cable is used to mechanically engage the parking lock.

Gear oil
The gear oil level in transmission and final drive (front) is checked and topped up together.
^ Only the oil available as a replacement part may be used in the direct shift transmission 02E. Other oils cause faults and/or failure of the transmission.
The oil level in the bevel box is checked and topped up separately.
^ Only the gear oil available as a replacement part may be used for the bevel box. Other oils cause faults and/or failure of the bevel box.

Regulations for the disposal of oil
Make sure that used oil is taken to the appropriate collection center for recycling.
^ Improper disposal of used oil endangers the environment.
^ It is forbidden to add solvents, brake fluid, coolant or similar to the used oil.
^ Please observe the information shown on the packaging of the oil.

Gear shift point variations for hills
An additional gear change map automatically selects gear changes for hills depending on accelerator pedal position and driving speed.
^ Gear change map for extreme uphill stretches is matched to engine output
^ Gear change map for extreme downhill stretches is matched to the braking effect of the engine
^ The engine braking effect can also be fully exploited via a specific gear, e.g. on hills when towing a trailer, by directly selecting a gear with the tiptronic.