Thanks for all the replies...so consensus is dont drive it....checked in meantime running voltage was at 23.9volts so not a gremlin due to low battery, anyway dont even need to start engine error pops up on dash when key is in position 1. I guess only removing underbelly will show if there is a collection of trans fluid or not....as mentioned main concern was how much driving i could do in limp mode until i get it looked....i will plead with mechanic to look at it tom. If a leak is evident will ask him to replenish fuid until can get leak looked at....ooops typo 13.9v i meant

__________________
E53 X5 3.0d SUV prod.date 11/2004 eng.variant M57N Europe Right hand drive N