Pulling my hair out please help. My M3 will go into reverse as well as first and second gears normally. When shifting to third manually the car goes to O and powers down. After turning off and restarting it will do the same thing again. However if I place it in auto mode it drives normally through all of the gears. I have tried a new salmon colored relay with no changes. Indy shops say hydraulic pumps needs replacing without even looking at car. I pulled codes P0944 and P1716. Any ideas as to what is causing problem?
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