A8 Quattro Sedan V8-4.2L (BGK) (2006)
Valve Body: Service and Repair
Mechatronics Unit, Removing and Installing
Mechatronics unit, removing and installing 09E, 6 Speed A/T
Note:
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Always replace mechatronics unit if it is dirty or faulty.
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Rules of cleanliness for working on automatic transmissions.
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General repair notes.
Removing
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Disconnect battery.
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Remove oil pan.
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Remove ATF screen.
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Rotate electrical connector at left of transmission counter clockwise - arrow - and remove.
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Touch vehicle ground with hand (without gloves) to discharge static.
CAUTION!
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Always discharge static by touching a grounded object, e.g. vehicle ground, before touching or removing mechatronics unit.
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Never touch contacts in 16-pin connector, as the static charge could destroy the control module and thus the mechatronics unit.
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Pull off locking clip for wiring harness connector - A -.
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Remove Mechatronics bolts in reverse order, i.e. first bolt - 11 -, then - 10 -, etc., up to - 1 -.
Note:
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Only the indicated bolts - 1 through 11 - may be loosened.
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If other bolts are loosened, this may affect the function of the mechatronics unit or it may come apart.
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Remove mechatronics unit together with wiring harness from transmission, at the same time guiding out connector for wiring harness.
Installing