I am working on a 2002 Hyundai Elantra GLS auto transmission filter. I
am stuck. I am surprised to see the filter is vertically positioned
behind the radiator,  partially below battery and air duct and air
box , on driver side (left) of vehicle.  Normally I expected it
horizontally under the car , like in 1999 model. Instead, it is
vertical.  I can remove almost all the bolts except 3 on left side, no
room to get to. First,  I drained fluid from bottom plug, Removed
bottom shield. Removed top shield covering battery. Then I see the
black pan of transmission filter vertically. I removed right side ,
top, bottom bolts, The left side bolts are hidden under battery, air
duct and air box. I used rachet wrench, extension, flex adapter, I
still cannot reach  those 3 bolts. How do you guys do it? remove
battery, battery tray, then air box, and air hose?