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Home >> Audi >> 2012 >> S4 Automatic DCT Trans >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Controls, Housing - S-TRONIC Transmission 0B5 AWD >> 34 Controls, Housing >> Diagnosis And Testing >> Selector Mechanism, Checking >> 2. Check The Ignition Key Lock.

2. Check The Ignition Key Lock.

-- Press the button for the parking brake to lock the electro-mechanical brake.

-- Do not press the brake pedal.

-- Press the key briefly in the ignition lock to reach the "ignition on" position.

-- Press the brake pedal and hold it down.

-- Turn off the ignition.

-- Move the selector lever into "P".

-- Remove the key.

Select Guided Fault Finding  on the vehicle diagnosis tester if the key lock does not function as described.