Removing and installing cover for mechatronic unit — AUDI

🧭 Before you start

Fits: platform code 42

• Renewed: gasket

Don't miss

• Risk of damage to gearboxDo not run engine or tow vehicle with cover for mechatronic unit removed or when there is no ATF in the gearbox. — Remove rear wheel (left-side) Wheels and tyres44.
• (Items 1, 3, and 5) can be disregarded.
• (Items 1 and 2) can be disregarded.
• Renew gasket and bolts.

📋 Procedure

1. ⚠ Risk of damage to gearboxDo not run engine or tow vehicle with cover for mechatronic unit removed or when there is no ATF in the gearbox. — Remove rear wheel (left-side) Wheels and tyres44.
2. Remove rear mounting (1) for rear noise insulation panels 66.
3. Remove mounting (1) (left-side) for rear noise insulation panels 66.
4. Place used oil collection and extraction unitVAS 6622 below gearbox.
5. Remove drain plugs (2, 4) and allow ATF to drain off. [Note: (Items 1, 3, and 5) can be disregarded.]

6. Unscrew overflow pipe (3) and allow remaining ATF to drain. [Note: (Items 1 and 2) can be disregarded.]
7. Remove bolt (arrow) and press coolant hose to side.
8. ⚠ Mechatronic unit for dual clutch gearbox J743 can be irreparably damaged by electrostatic discharge.Before handling electrical connectors, mechanic must discharge static.Do not touch contact pins in electrical connector for mechatronic unit for dual clutch gearbox J743 with bare hands. — Touch a suitable earthed object with your hand (without gloves) to discharge any static electricity.
9. Turn fastener cap anti-clockwise (arrow) and unplug electrical connector for mechatronic unit for dual clutch gearbox J743 together with heat insulation sleeve.
10. Move electrical wiring harness clear.
11. Pull up retaining clip (arrow) on electrical connector for mechatronic unit and remove.
12. Place used oil collection and extraction unitVAS 6622 below gearbox.
13. Loosen bolts (arrows) in diagonal sequence and remove.
14. Detach cover for mechatronic unit, allowing remaining ATF in cover to drain off into used oil collection and extraction unitVAS 6622. [Note: Renew gasket and bolts.]
15. ⚠ Mechatronic unit for dual clutch gearbox J743 can be irreparably damaged by electrostatic discharge.Before handling electrical connectors, mechanic must discharge static.Do not touch contact pins in electrical connector for mechatronic unit for dual clutch gearbox J743 with bare hands. — Clean sealing surfaces; they must be free from oil and grease.
16. Fit gasket (arrow) in cover for mechatronic unit and tighten bolts .
17. Fill with ATF and check ATF level .
18. Fit rear wheel (left-side) Wheels and tyres44.

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