Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 455

– Hold the Mechatronic facing up. The sensor arm must not

touch the sensor wheel.

– Make sure the Mechatronic unit is installed correctly.
– Tighten the new bolts -1 through 10- hand-tight.
– Tighten the bolts -1 to 10- in the tightening sequence provided.

Tightening specification. Refer to :

⇒ Fig. ““Tightening Specification and Sequence for DSG

Transmission Mechatronic -J743- ”“ , page 30

– Replace both -O-rings- if the “old” Mechatronic is being instal‐

led again.

– Coat the O-rings with DSG

®

 transmission fluid.

A »new« Mechatronic already has »new« O-rings.
– Replace the transmission cover gasket.
– Make sure the seal fits correctly.

– Place the transmission fluid pan -A- over the Mechatronic. Be

careful not to pinch any wires when doing this.

– Install the new bolts -arrows- and tighten in a diagonal se‐

quence in stages.

– Attach the cable bracket to the transmission cover -arrows- (2

M6 nuts).

– Mount the new transmission fluid pump cover -A-. Tighten the

new bolts -arrows- and tighten in a diagonal sequence in

stages.

– Install the lower left front wheel housing liner. Refer to ⇒  Body

Exterior; Rep. Gr.  66 ; Wheel Housing Liner; Overview - Front

Wheel Housing Liner .

Connect the connector -A- on the DSG Transmission Mechatronic

- J743- as follows:
– The arrow -D- on the DSG Transmission Mechatronic - J743-

-B- must line up with the connector -A- as well as with the tab

-C-.

– Connect the connector -A- carefully all the way and then turn

the lock “clockwise” in direction of -arrow-.

– Install the new bolts -1- for the pendulum support on the trans‐

mission. Refer to ⇒  Rep. Gr.  10 ; Subframe Mount; Overview

- Subframe Mount .

– Install the air filter housing if it was removed earlier. Refer to

⇒  Engine Mechanical, Fuel Injection and Ignition; Rep. Gr. 

24 ; Air Filter; Air Filter Housing, Removing and Installing .

– Do not start the engine.
– Move the Used Oil Collection and Extraction Unit -

SNM372500- under the transmission near the transmission

fluid drain and check plug.

– Remove the transmission fluid drain- and check plug -arrow-.

– Install the Oil Filler - VAS6262A- into the check hole hand-

tight.

– Shake before opening.
– Attach the Oil Filler - VAS6262A- to the oil bottle. Be sure to

read the instructions. Refer to 

⇒ page 113

 .

– Fill 3 liters (3.1 quarts) of transmission fluid.
– To change containers, close the shut-off valve or hold the Oil

Filler - VAS6262A- higher than the transmission.

Start the engine and check the fluid level. Refer to

⇒ “9.1 Transmission Fluid Level, Checking”, page 113

 . The Oil

Filler - VAS6262A- remains installed.
– Install the noise insulation. Refer to ⇒  Body Exterior; Rep. Gr. 

66 ; Noise Insulation; Overview - Noise Insulation .

– Connect the Vehicle Diagnostic Tester .
– Perform a basic setting on the DSG Transmission Mechatronic

- J743- .

Note

After installing a “new” Mechatronic, readapt the immobilizer.

Tightening Specifications
♦ Refer to 

⇒ “1.1 Overview - Mechatronic”, page 28

 .

♦ Cable bracket on the transmission cover. Refer to

⇒ “3.3 Transmission Tightening Specifications”, page 96

 .

1.2.2

DSG Transmission Mechatronic -

J743- , Removing and Installing, Trans‐

mission Removed

Special tools and workshop equipment required
♦ Torque Wrench 5-50Nm - VAG1331-
♦ Used Oil Collection and Extraction Unit - SMN372500-

Caution

This procedure contains mandatory replaceable parts. Refer

to component overview prior to starting procedure.

Mandatory Replacement Parts
♦ Bolts - DSG

®

 Transmission Mechatronic - J743

♦ Bolts - Pendulum Support Bolts to Transmission
♦ Bolts - Transmission Fluid Pan
♦ Bolts - Transmission Fluid Pump Cover
♦ O-rings - DSG

®

 Transmission Mechatronic - J743

♦ Seal - Transmission Fluid Drain and Check Plug
♦ Seal - Transmission Fluid Pan

Note

♦

Follow the guidelines for clean working conditions. Refer to

⇒ “3.2 Clean Working Conditions”, page 5

 .

♦

Pay attention to the general repair information. Refer to

⇒ “3.3 General Repair Information”, page 6

 .

Always make sure that no dirt enters an “open” transmission. Dirt

entering can cause a transmission malfunction especially with

“open” Direct Shift Gearbox (DSG

®

) Mechatronic and/or oil pump.

Removing
– Place the Used Oil Collection and Extraction Unit -

SMN372500- or Drip Tray under the transmission.