Lower the back door using either back door handle.
Make sure to push the back door down from the outside to close it.
The back door closing assist will activate and the back door will fully close automatically.
Canceling the power back door system (vehicles with a power back door)
Turn the main switch in the glove box off to disable the power back door system.
Precaution
CAUTION:
HIGHLANDER is equipped with SRS, which consists of a driver airbag,
front passenger airbag,
side airbag and curtain shield airbag. Failure to carry out service
operations in the correct sequence
could cause the SRS to unexpectedly deploy during servicing, possibly
leading t ...