Pretty sure that the flashing abs light indicates your abs module is bad. The abs module is a diy fix, you need torx socket if I recall correctly. You can get your old one rebuilt, might be better than new oem.

The flashing arrow is related possibly to the pnp switch failure. My orange arrow has been flashing for months, but tranny is still working as normal. I read somewhere that if you move your gear shift lever up and down like 100 times, it might clear the flashing arrow, but that has not worked for me.