Thread: D4 Gearbox Fault

Same problem here on 2014 D4 with ZF 8HP 8 speed gearbox (command wheel instead of stick). Enabling low range, returning to park, then restart fixed it for me.

Symptom
- started car ok, selected reverse and got message "gearbox fault" and yellow triange, message persists when returning knob to P, drive does not work either, engine revs but no movement, outside temperature -15C but no temp related problems before.
- several restarts did not work

Problem
No idea.

Solution
- put knob into neutral
- press low range. Again the "gearbox fault" plus the whole christmas tree lights up with all sorts of failures. Low range does not engage and low range indicator keeps blinking.
- put knob into park. Low range indicator keeps blinking.
- restart car and problem gone

Maybe time for a software update since this was the first model year with the ZF 8HP

Mine did it as well,while in Low Range and working hard.It also wouldn’t change gears,like some sort of limp mode.
I switched the engine off,waited probably a minute,turned it on and never saw the message again.
I doubt it was the auto overheating as I presume a red light on the dash would come on before it goes into limp mode.