Hi folks, is there any particular significance to a transmission fail-safe message after 5 minutes of driving? The car also has a transfer box fault and from reading various threads this can bring on the tx fail-safe mode (associated with an incorrect output value from the rotary potentiometer in the hi/lo select motor). Does it take 5 minutes of driving for the ecu to decide there is a speed mismatch with the output shaft sensor when compared to the speed expected due to being in lo range for example?

First thing to check is battery condition and voltage, the gearbox ECU is very sensitive to low volts... Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-