Hello,
Thanks for all the detail! I recently had my A7 in for a good bit of work in October, gearbox service included, and a suspected coolant leak (needed two top ups in 6 months).
Was also getting the gearbox malfunction warning very sporadically. 6 weeks later, coolant level warning AGAIN, and low and behold nearly empty tank! Leak clearly still there, but more recently in last 4 days more occurrences of gearbox malfunction warning, and today it happened and couldn't move the car and had to turn on and off a few times to get her going again. Based on what you've said above, I am wondering if something similar is happening....
