Put the car in park and engage the emergency brake.
How to adjust rav4 roof rack.
How to remove the roof rack crossbars on a rav4.
Pry under the interior side of each leg cover with a screwdriver creating a gap.
Locate the lock knobs for each side of the cross rails there are eight two on each side of each cross rail.
Undo the screw and move the bars.
Stand on a step stool and examine the roof rack rails at the rear end of your rav4.
Turn the engine off.
The end of the rails feature leg covers that taper.
Repeat this for the other side.
Use a size 25 torx screw bit and a ratchet as it is in tight.
For some reason there is only one more locking point you can move forward to from there you are on your own but normally it is just the last bit you need.