09 xb, 4113lx + factory keyless

All, been out of the biz for some years and I'm having an annoying issue that should be REALLY simple on a family member's Scion. Dropped in the 4113LX one-button RS in an 09 xB, but cannot get the factory keyless entry to cooperate. Once remote started, the factory keyless entry no longer works. I know this a factory feature of the keyless entry unit when it senses the engine running, but I could swear there's a methodology to bypass that and allow the owner to enter the vehicle while remotely started. However, I can't seem to work it out! Can any of you guys help an old-timer out with this? Thanks!

Hook up unlock off the 4113 to the car and press the button once more during remote start to unlock doors.

I here you on that one, but she really wants her keyless to work as it always had...

It's not gonna happen. There's nothing you can do to work around it.