A week ago the dash said, liftgate open, but it was closed tight. The window in liftgate would not work with the remote, but when pressing window release on remote it would set off the four way flashers and head lights. A few days later the message on dash went out, but now the liftgate will not unlock, but the window release does work using the remote. There is no manual way to unlock liftgate from the outside or inside. All the other door locks work good with remote.