S4 Quattro Wagon V8-4.2L (BHF) (2008)
Control Module: Service and Repair
Transmission Control Module, Replacing
‹› The Transmission Control Module (TCM) (J217) is a component of the mechatronic unit in the transmission and cannot be replaced separately.
‹› To achieve optimal anti-theft protection for the vehicle, an anti-theft immobilizer was installed. The anti-theft immobilizer is a system for
enabling/locking the Transmission Control Module (TCM) (J217).
Work procedure
Check the control module identification of the previous Transmission Control Module (TCM) (J217) as follows:
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Connect the scan tool.
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Switch the ignition to the "ON" position.
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Select "Diagnostic mode 9: Vehicle information."
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Select the"Test-ID 04: Calibration identification".
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The Transmission Control Module (TCM) (J217) identification will be displayed, e.g.: 09G27750 L 0301
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End diagnosis and switch the ignition off.
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Replace the Mechatronic unit in the transmission.
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Check the identification of the new Transmission Control Module (TCM) (J217) to ensure it matches the old Transmission Control Module
(TCM) (J217).
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Code the Transmission Control Module (TCM) (J217 ) => [ Diagnostic Mode 09 - Read Vehicle Information ] See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 09 - Read Vehicle
Information.
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Generate readiness code. => [ Readiness Code ] See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors,
Trips, Drive Cycles and Readiness Codes.