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Instructions for tow starts and when towing > < Filling quantity

Leon Mk1

Added information concerning the semi-automatic gearbox 02E
Added information concerning the semi-automatic gearbox 02E
Gearbox:
The semi-automatic gearbox 02E is also known as the dual clutch gearbox. Engine torque is transmitted to the gearbox through the dual-mass flywheel. The gearbox has the same structure as a manual 6-speed gearbox. The gearbox functions as an automatic gearbox through the alternating hydraulic control of the wet multi-disc clutches, that is, the gears engage automatically, or manually in Tiptronic mode. There is no clutch pedal. For further information the corresponding → auto-didactic programme should be consulted.
Safety functions of the gearbox control unit
If one ore more components or sensors malfunction, the gearbox control unit activates the corresponding replacement functions or emergency run programmes. That way the function of the gearbox is guaranteed with no damages, though there are restrictions in functioning and quality of the gear switching processes. For further information the corresponding → auto-didactic programme should be consulted.
Gear selection mechanism
The position of the selector lever is no longer transmitted to the gearbox mechanically through the selector lever cable and the multifunction switch (gear speed sensor), as is the case with the automatic gearbox. The positions of the selector lever or the gear shifts are sent to the gearbox control unit using its own control unit located in the gear selection mechanism, through the CAN bus. That is, the gears are changed without using a lever cable. Only when the selector lever is in „P“ does the parking block engage mechanically using the selector lever cable.
Gearbox oil
The levels of gear oil in the gearbox and in the front final group are checked and topped up together → Chapter.
t  Only the recommended gear oil should be used for semi-automatic gearbox 02E. The use of other types of oil may cause damage to the working of the gearbox, spare part no. → Chapter.
t  Do not add additives or different oils to the oil
t  The oil which is removed should not be reused.
t  To maintain the oil performance capacity, the gearbox filter should also be replaced whenever the oil is changed during a maintenance service.
   
Function of the oil
t  The oil is not used to lubricate the gearbox
t  The oil transports the finest of wear particulates of the differential to the filters, keeps the lubricating film on the tooth flanks of the differential intact and is also used as a pressure media for the correct operation of the gearing mechanism.
t  Additionally, it also seals the slider and helps the synchronising hub when changing gear. Next to the noise insulation, it is used to store and transport heat. Thus, the oil takes over several versatile functions. The oil of the automated manual gearbox 02E fulfils the highest demands.
t  To maintain this oil performance capacity, the gearbox filter should also be replaced whenever the oil is changed during a maintenance service.
Oil filter change
It is not always necessary to replace the oil filter.
Do not change the filter if:
t  the gearbox oil radiator or its O-rings have been replaced or no coolant has entered the oil.
t  the seal of the selector lever has been replaced.
t  the seal of the flanged shaft or the insertable shaft has been replaced.
t  a non leak-proof cover of the mechatronic control unit, of the multiple clutch or the oil pump has been replaced.
t  the gearbox input speed sender -G182- has been replaced with the clutch temperature sender -G509-.
The filter should be changed if:
t  the vehicle has been driven for 60,000 kilometres (perform maintenance service).
t  If coolant has entered the oil.
t  If swarf has been found in the oil.
t  The clutch is burnt or has a mechanical fault.
  N01-0453
Oil level check and troubleshooting
t  → Anchor The versatile functions of the oil are described here. Oil cannot disappear »without leaving traces«. Oil will only be missing if there is a leak in the gearbox.
t  If the gearbox is covered with oil, first the oil leak has to be found. The leak must be eliminated before changing the oil and restoring the correct filling level → Chapter.
t  The leak can neither be identified nor eliminated by simply refilling with oil. A wrong feeling of safety is conveyed.
  N00-10244
Oil drain and oil inspection screw -A-
t  The 1st generation of the automated manual gearbox 02E had 2 screws.
t  Resulting from the second screw not being needed, the oil drainage as well as the oil level adjustment are only carried out using screw -A-.
t  The gearbox oil level is determined using an 8 mm hexagon socket (tightening torque 3 Nm) across the length of the overfill tube made from plastic.
Regulations for oil waste management
Used oils should be taken to an appropriate centre for their correct disposal.
t  Used oils pollute the environment when not correctly disposed of.
t  It is forbidden to mix this oil with solvents, brake or coolant liquids.
t  Always follow the instructions shown on the oil container.
Modifications in the shift points, up and down
When shifting up or down, the gearshifts are automatically selected using the possible range of gear shifts according to the position of the accelerator pedal and the speed of travel.
l  The possible range of a gear change will be adapted for maximum engine power during extreme ascents.
l  The possible range of a gear change will be adapted for maximum engine braking power during extreme descents
l  The engine braking effect may be used by directly selecting a specific gear using the Tiptronic, for example, when driving with a trailer on downhill slopes.
  N34-10673

Instructions for tow starts and when towing > < Filling quantity