Transmission Control (TCU / DSG)

Remaining in one gear can be part of a protective operating response, but “limp mode” is a description rather than a diagnosis.

A change after an adaptation reset needs the exact operation and reason for performing it recorded.

Before replacing a transmission controller, preserve its identification and diagnostic records.

Visible moisture near transmission wiring needs an inspection of the installation, not just a request to dry a controller.

A warning linked to selecting Park should include whether Park is recognised, whether the vehicle remains secure and whether it can be switched off normally.

A code mentioning a solenoid needs its full wording preserved.

A gearbox warning after battery work should be assessed with the electrical and repair timeline preserved.

A transmission warning following a fluid service needs the service details, not just the fault code.

Unexpected neutral selection should be distinguished from the normal display or operating strategy described in the manual.

A difference between manual and automatic shift modes is useful diagnostic context.