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Guided Functions for gearbox > < Electrical/electronic components and fitting locations

A4 Mk3

Removing and installing gearbox oil temperature sender 2G754
Removing and installing gearbox oil temperature sender 2 -G754-
In conjunction with certain engine versions the 7-speed dual clutch gearbox 0B5 (S tronic) has an additional gearbox oil temperature sender 2 -G754-, which monitors the temperature of the gear oil (MTF) employed for the gear cluster.
t  Depending on the version, there are two different types which can be fitted in different locations: either at the side or in place of the drain plug for gear oil (MTF).
   
Procedure
–  Switch off ignition.
  Note
Always switch off ignition before unplugging connector at gearbox oil temperature sender 2 -G754-. If the ignition is on, the gearbox reverts to a backup programme. This increments the counter for high temperature operation, and after 10 minutes an entry is recorded in the event memory of the automatic gearbox control unit -J217-.
–  Remove noise insulation (rear) -2- → Rep. gr.66.
–  Place used oil collection and extraction unit -V.A.G 1782- below gearbox.
  Caution
Risk of damage to gearbox
If there is no gear oil (MTF) in the gearbox (or not enough oil):
t  The engine must not be started.
t  The vehicle must not be towed.
  A10-11071
Vehicles with gearbox oil temperature sender 2 -G754- fitted at side of gearbox housing -1-
–  Remove tunnel cross member → Chapter.
–  Unplug connector -2- from gearbox oil temperature sender 2 -G754-.
  Note
Keep gear oil away from connector -2- and contacts on gearbox oil temperature sender 2 -G754-. The connector contacts must be cleaned immediately if they come into contact with gear oil (MTF). The gear oil (MTF) causes contact problems in the connector contacts.
–  Remove bolt -3-.
–  Detach gearbox oil temperature sender 2 -G754--1-.
–  Drain gear oil (MTF).
Installation is carried out in reverse sequence; note the following:
l  Tightening torque: bolt -3- 10 Nm (bolt securing gearbox oil temperature sender 2 -G754- to gearbox)
–  Secure wiring harness to gearbox -arrows-.
–  Install tunnel cross member → Chapter.
–  Fill up gear oil (MTF) → Chapter „Filling up gear oil (MTF)“.
–  After changing gear oil, perform „Guided Function“02 - Reset temperature counter (G754) using vehicle diagnostic tester → Chapter.
  A34-10861
Vehicles with gearbox oil temperature sender 2 -G754- fitted in place of drain plug for gear oil (MTF) -1-
–  Unplug connector -2- from gearbox oil temperature sender 2 -G754-.
  Note
Keep gear oil away from connector -2- and contacts on gearbox oil temperature sender 2 -G754-. The connector contacts must be cleaned immediately if they come into contact with gear oil (MTF). The gear oil (MTF) causes contact problems in the connector contacts.
–  Unscrew gearbox oil temperature sender 2 -G754--1-.
–  Drain gear oil (MTF).
Installation is carried out in reverse sequence; note the following:
l  Tightening torque: gearbox oil temperature sender 2 -G754- to gearbox, 45 Nm
–  Secure wiring harness to gearbox -arrows-.
–  Fill up gear oil (MTF) → Chapter „Filling up gear oil (MTF)“.
–  After changing gear oil, perform „Guided Function“02 - Reset temperature counter (G754) using vehicle diagnostic tester → Chapter.
  A34-10870

Guided Functions for gearbox > < Electrical/electronic components and fitting locations