Rear door correction entails what, exactly?

We don't exactly know yet. From news reports from Japanese press, it appears to be adding a membrane or new seal to the door handle assembly to keep water from penetrating to the switch.

I'll post the instructions as soon as they become available, but from looking at the instructions to remove the rear door outside handle assembly, it's likely going to be a pretty big job requiring the rear doors to be pretty well disassembled(removing the assembly is listed as step 24).

 

I put some black electrical tape over the button area til it gets sorted