| Special tools and workshop equipment required |
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| Vehicle diagnostic tester |
| Requirements for basic setting: |
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| Vehicle diagnostic tester is connected. |
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| Selector lever is in position „P“. |
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| Using vehicle diagnostic tester in Guided Functions mode, select 02 - Gearbox electronics and then select the appropriate basic setting function. |
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| It is important to follow all the instructions given by the vehicle diagnostic tester exactly in order to complete the basic setting successfully. |
| The following „basic settings“ are currently available: |
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| 1. Basic setting complete |
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| 2. Basic setting neutral |
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| 3. Basic setting removal position |
| Description of basic settings: |
| 1. Basic setting complete |
| Basic setting complete must be performed after the following operations: |
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| When the gearbox is operated for the first time |
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| When the dual clutch has been removed |
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| When the mechatronic unit for dual clutch gearbox -J743- with control unit has been renewed |
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| When gearbox repairs have been performed |
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| When the gearbox has been removed |
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| The basic setting complete function on the vehicle diagnostic tester achieves a fast and comprehensive self-adaption of the clutch system. The clutch and gear actuators are re-adapted. The current clutch engagement point, the current degree of wear, the synchronisation points and the end positions of the gear actuators with gears engaged are detected and stored. |
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| Clutch self-adaption is performed regularly during normal driving, according to the amount of clutch wear. However, this adaption is only possible under specific driving conditions. For this reason a „Basic setting“ of the clutch must be performed after certain repairs, as listed above. This achieves optimum adjustment for gearshifts and clutch engagement when moving off. |
| Basic setting neutral moves the gear actuators into the removal position. This ensures that the mechatronic unit does not "catch" during removal. |
| Basic setting neutral also attempts to shift out of all gears so that the vehicle can be pushed, e.g. if the clutch is defective. |
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