MECHATRONIC, Removing And Installing: Removing

WARNING: This page is about a different variant/trim than selected.

NOTE:

General repair instructions. Refer to REPAIR INFORMATION .

Rules for cleanliness when working on the DSG transmission. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

CAUTION:

There is a risk of destroying the transmission control module (Mechatronic) with static discharge.

Always "discharge" the static electricity before working with electric connectors. Do this by touching a grounded object, for example vehicle ground, the vehicle or the hoist.
Do not touch contacts in transmission connector with hands.

The Transmission is Installed.

Fig 1: Noise Insulation Panels

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-- Remove the noise insulations -1 and 2-. Refer to OVERVIEW - NOISE INSULATION .

CAUTION:

Danger of Causing Damage to the Transmission.

Do not start the engine if there is no ATF in the transmission or if the DSG Transmission Mechatronic -J743- is removed.

-- Move the selector lever into "P".

-- Turn off the ignition and remove the key.

-- Turn the twist lock counter-clockwise in direction of -arrow- and disconnect the connector from the transmission.

Fig 2: Disconnecting Connector On Transmission

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Transmission, Removed or Installed

-- Remove the ATF oil pan. Refer to OIL PAN, REMOVING AND INSTALLING .

-- Remove the bolt -1-.

-- Turn the connector housing -2- counter-clockwise in direction of -arrow- and remove it.

Fig 3: Disconnecting Connector On Transmission

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Vehicles with an ATF Pipe Filter

-- Remove the bolts -arrows- and remove the connecting piece for the ATF pipes. Refer to ATF FILTER, REMOVING AND INSTALLING .

Fig 4: Locating ATF Pipe Connecting Piece Bolts (ATF Pipe Removed)

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Vehicles with ATF Filter

-- Remove the bolts -arrows- and remove the ATF filter housing. Refer to ATF FILTER HOUSING, REMOVING AND INSTALLING

Fig 5: Locating ATF Filter Housing Bolts

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All Vehicles

NOTE:

The ATF pipes -2- cannot remain attached to the mechatronic, because these would otherwise block the removal.

Always replace the seals -3 and 4-.

Fig 6: Identifying ATF Pipes And Filer Housing

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-- Carefully pull the ATF filter to the rear and off the Mechatronic in direction of -arrow-.

Fig 7: Identifying ATF Filter

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CAUTION:

There is a risk of destroying the transmission control module (Mechatronic) with static discharge.

Always "discharge" the static electricity before working with electric connectors. Do this by touching a grounded object, for example vehicle ground, the vehicle or the hoist.
Do not touch contacts in transmission connector with hands.

-- Pull the retainer in direction of -arrow 1-, push the release down in direction of -arrow 2- and disconnect the connector.

Fig 8: Identifying Connector Retainer & Release

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-- Remove the bolts in reverse order: -6 to 1-.

Fig 9: Identifying Mechatronic, Tightening Sequence

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CAUTION:

Risk of causing Damage to the Mechatronic.

Only bolts -6 to 1- may be loosened.
If other bolts are loosened, this may affect the function of the Mechatronic unit or it may come apart.

NOTE:

The sealing surface must not be damaged.

The Mechatronic fits partially inside the transmission.

If the Mechatronic must be removed, then a second technician will be needed to keep it from falling. Another alternative, the bolts -1 and 2- can be installed slightly to hold the Mechatronic in place while it is being removed.

-- Remove the Mechatronic.

CAUTION:

Danger of Damaging the Sensor on the Back Side of the Mechatronic.

Lay the Mechatronic with the bolt head side facing down only.