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Home >> BMW >> 2004 >> X5 44i >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Control - Overview >> Electronic Transmission Control >> Transmission Features and Principles of Operation >> Reverse Lockout
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Reverse Lockout

The TCM will lockout reverse above 3 MPH to prevent drivetrain damage. The range selector lever will go into the reverse detent, but reverse will not engage. This is achieved by the TCM through hydraulic intervention. The transmission will appear to be in neutral.

NOTE: Reverse Lockout is not operative when in fail-safe.
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