Tiptronic warning lamp comes on transmission is in emergency mode

Detectable faults: Open circuit, short to positive

Pull off transmission connector. Measure voltage at pin M. (System voltage)

1) No voltage: Pull off Tiptronic control unit connector. Check wiring from Tiptronic control unit pin 19 to transmission connector pin M.

Wiring o.k.: Tiptronic control unit faulty

2) Voltage cannot be switched off: warning lamp does not come on when fault occurs

Pull off Tiptronic control unit connector

No voltage at pin M: Tiptronic control unit faulty

Voltage at pin M: Short to positive within wiring (transmission -> Tiptronic control unit)

Test point 4 Voltage sensor

Fault code 14

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