My problem has a bit different symptoms. Mine don't toss on the light.
Your Light and Malfunction A.
5/16 socket 1/4"drive and a 2"extension. Is all you need.
An oil catch pan/Filter and 4 quarts of oil. and some rags.
Pull pan. 20 screws. SPLASH
Unplug temp sensor from filter. Plug sensor in new filter. (just pulls out)
Pull Down filter. Has oring squeeze is all. She comes out with a tug.
5/16 on solenoid.
Tug on solenoid. She slides out.
Oil up orings on new solenoid and pop back in.
Plug wire back in.
reinstall pan with gasket that came with filter.
Torque bolts to 60-70 inch pounds.
Dump in 3 quarts.
Check and add if necessary.
Shift solenoid A: P/N XS4Z-7H148-AA $45.77 same as “A,B” Just bought one two days ago.