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Audi Workshop Service and Repair Manuals

Code letters, gearbox allocation, ratios, equipment > < Gearbox identification
Notes on the automatic 6-speed gearbox 09G
Notes on the automatic 6-speed gearbox 09G
Gearbox
The automatic gearbox 09G is equipped with 6 hydraulically activated forward gears. When the lock-up clutch is closed, the 2nd, 3rd, 4th, 5th and 6th gears become mechanically driven gears by cutting out the torque converter slip.
Torque converter
The torque converter is equipped with a lock-up clutch. The lock-up clutch is closed dependent on load and speed.
ATF
The ATF is filled for life. The ATF need not be changed as part of a service.
The ATF level in planetary gearbox and final drive is checked and topped up together → Chapter.
t  Only the ATF available as a replacement part may be used in the automatic gearbox 09G. Other oils cause faults and/or failure of the gearbox, ATF replacement part number → Chapter.
Self-diagnosis
Before performing repairs to the automatic gearbox, determine the cause of the fault as precisely as possible using “Guided fault finding”.
“Guided fault finding” is performed using the vehicle diagnostic, testing and information system -VAS 5051-.
Gear shift point variations for gradients
An additional gear change map automatically selects gear changes for gradients depending on accelerator pedal position and driving speed.
t  Gear change map for extreme uphill stretches is matched to engine output
t  Gear change map for extreme downhill stretches is matched to the braking effect of the engine
t  The engine braking effect can also be fully exploited via a specific gear, e.g. on gradients when towing a trailer, by directly selecting a gear with the tiptronic.
   

Code letters, gearbox allocation, ratios, equipment > < Gearbox identification