XC60 Auto transmission
Have a 2008 XC90 D5 that mechanic recommended a trans flush on last service report. No specific urgency. Had done month back, did seem to change gears quicker after. Out of the blue this morning drove for 5 minutes, stopped at an intersection with a slight incline, went to take off and no forward propulsion. Reversed down road fine, pulled over, tried again-nothing. Turned off, left it a bit, tried after 30 minutes (whilst called a tow) and it seemed fine but I let it get towed to garage. If I think about it I did feel the driver area seemed warm over the weekend and checked water levels. No error messages. Garage think might need a transmission specialist- any ideas? Guess I'm asking, how crippling might this be?