This article is from the Toyota RAV4 FAQ, by Ralph Becker with numerous contributions by others.
Toyota apparently felt that having the rear sunroof open was a
potential safety problem. However, dual sunroofs are available
in europe and elsewhere with the rear sunroof that can be popped
open.
You can modify your RAV4 by doing the following:
- Obtain a replacement sunroof latch from Toyota
(P/N 63250-16020, dealer cost of $42.22, retail is $50-$60)
- Replace the rear latch. This is very easy, just remove 2 trim
screws and 2 bolts that attach the existing latch, and reverse the
procedure with the new part.
- Remove the rear sunroof, and remove the latch mechanism from the
roof with 2 screws. You will need to disassemble the latch and
reassemble the locking arms in reverse so that the sunroof will lock
in place.
- The arms are held in place with snap rings that can be pried
off with a small screwdriver. Be careful! The snap rings will
fly across the room unless you cover them when you remove them.
- Remove the latch arms and replace them in reverse, i.e., the
left arm on the right, and vice versa.
- After reassembling the latch arms, reattach the mechanism
to the sunroof, and reinstall the roof.
- You can examine the front sunroof latch system to see how
it is supposed to look if you run into any difficulty.
 
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