ok the steering column issue this is what you have to do since the battery went flat. it has lost its memory.
make sure first its in park,key is on position and door closed. depress the MEM 5 TIMES, #2 ONCE,#3 TWICE, #2 ONCE WITHIN 5 SECONDS THEN THE SEAT WILL MOVE TO RELEARN THE END STOPS
THE REAR LATCH
first please check f10 fuse in luggage compartment fuse box to make sure that is good
then at the power latch there is a 6 wire connector and a 2 wire connector.
the 2 wire connector there black/grey wire and the other wire blue. the black/grey is the boot open switch and the other blue is the closing command switch control. need to check these switches from the pins to the black wire of the 6 pin connector to make sure that the switches are working correctly . the boot open switch is normally open and the other is normally closed .
if the switches are good then at the 2 pin connector ground each terminal to see if the motor will go up or down to emulate the switches.
the 2 wires that control the motor is blue/black and blue/yellow the control module just switches power and ground for the motor so it can go forward and backwards . use a volt meter to monitor the voltage and see by emulating the switches .
let me know if you still need help