Notes on the automatic 6-speed gearbox 09G |
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. |
The torque converter is equipped with a lock-up clutch. The lock-up clutch is closed dependent on load and speed. |
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. |
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| 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. |
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. |
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| Gear change map for extreme uphill stretches is matched to engine output |
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| Gear change map for extreme downhill stretches is matched to the braking effect of the engine |
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| 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. |
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