MECHATRONIC, Removing And Installing: Removing
General repair instructions. Refer to REPAIR INFORMATION .
Guidelines for clean working conditions when working on the dual-clutch transmission. Refer to RULES FOR CLEANLINESS WHEN WORKING ON DSG .
The System Is Under Pressure.
- Deactivate the ATF pump and drain the hydraulic pressure reservoir before removing the Mechatronic!
- Refer to ATF PUMP, DEACTIVATING AND DRAINING THE HYDRAULIC PUMP RESERVOIR .
There Is A Risk Of Destroying The Transmission Control Module (Mechatronic) With Static Discharge.
- Always "discharge" the static electricity before working with connectors. Do this by touching a grounded object, for example vehicle ground, the heater or the hoist.
- Do not touch connector terminals in the transmission connector with hands.
The Transmission Is Installed
-- Remove the noise insulations -1 and 2-. Refer to NOISE INSULATION, REMOVING AND INSTALLING .
-- Drain the ATF. Refer to ATF, DRAINING AND FILLING .
-- Turn off the ignition and remove the key.
-- Disconnect the connector -1- by pressing the locking mechanism -arrow B- and pull the locking bracket -2- in the direction of -arrow A-.
-- Remove the protective cap -arrow-.
-- Remove the transmission fluid pan. Refer to TRANSMISSION FLUID PAN, REMOVING AND INSTALLING .
-- Disconnect the connector using the :T40305 .
The System May Be Under Pressure.
- Make sure that the ATF pressure reservoir is discharged. Refer to ATF PUMP, DEACTIVATING AND DRAINING THE HYDRAULIC PUMP RESERVOIR .
- When the system status is not clear, for example the cause of a faulty transmission control module, only loosen the mechatronic bolts to a minimal degree, so that the oil pressure in the hydraulic pressure reservoir can decrease slowly.
- Wear protective eyewear.
-- Loosen the bolt in the sequence -1 to 7- a 1/2 turn.
-- Remove the bolts -2 and 5- and install the two :T40199 in their place.
-- Remove the remaining bolts -1, 3, 4, 6 and 7-.
Risk Of Causing Damage To The Mechatronic.
- Only bolts -1 through 7- may be loosened.
- If other bolts are loosened, this may impair the function of the Mechatronic unit or it may come apart.
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.
Risk Of Causing Damage To The Mechatronic.
- Lay the Mechatronic with the bolt head side facing down only.
-- Remove the Mechatronic.
Contamination Damages The Mechatronic.
- A clean work environment is required for working on the Mechatronic.
- Place the removed Mechatronic on a clean surface and cover it. Use foil or lint-free cloths.
-- Seal off the ATF channels with the :T40322/1-4 .