I took the car in to the local dealer, they diagnosed that car and informed me that they found a transmission oil leak (Minor), which is allowing a lot of dirt build up in the area where it's leaking, they have seen this issue in the past were it caused the ML to stall and not start back-up. To fix this issue they need to replace an O ring causing the leak. Total cost is $140 inc GST. I hope that fixes my issue. Will keep you posted.