No lights flashing when unlocking/locking - but does beep

Have you tried the other FOB? It might be a battery. The Manual refers to it as a KEY if you are searching for information, which includes the following:

 

Check the vehicle settings menu in the touch screen, I'd not there I think it can be set using Carista or by a Toyota dealer.

 

You said that the car is used, but the FOBs are new - are they genuine TOYOTA parts? Maybe when supplying NEW FOBs they haven't programmed them.

 

The Carista module and app allows you to program not only the beep and light flashing, but a bunch of other things. The dealer can do this as well.

Once I entered mine, the App emailed me a list of my selected settings. Here are the ones for my remote (most, but not all are the same as the default settings).

1. Doors / Windows / Remote
   
   Blink turn signals when locking/unlocking with remote
   *YES* / NO
   
   Beep when locking/unlocking with remote
   *YES* / NO
   
   Volume of beep when locking/unocking with remote
   OFF / 1 / 2 / 3 / *4* / 5 / 6 / MAX
   
   Beep when opening/closing windows with remote
   *YES* / NO
   
   Warn when door can't be locked with remote because it's open
   *YES* / NO
   
   Warn when a window is still open when locking doors
   *YES* / NO
   
   Warn when sunroof is still open when locking doors
   *YES* / NO
   
   Panic function on remote
   *ENABLED* / DISABLED
   
   Re-lock doors automatically if you unlock, but don't open a door
   *YES* / NO
   
   Re-lock doors automatically if you unlock, but don't open a door within…
   30 SECONDS / *60 SECONDS* / 120 SECONDS
   
   Unlock doors via remote
   *DRIVER'S DOOR ON 1ST PRESS, ALL ON 2ND* / ALL DOORS ON 1ST PRESS
   
   Unlock doors via physical key
   *DRIVER'S DOOR ON 1ST PRESS, ALL ON 2ND* / ALL DOORS ON 1ST PRESS
   
   Unlock doors via smart key (door handle button)
   DRIVER'S DOOR ON 1ST PRESS, ALL ON 2ND / *ALL DOORS ON 1ST PRESS*
   
   Auto-lock all doors
   DISABLED / *WHEN SHIFTING INTO GEAR* / WHEN VEHICLE STARTS MOVING
   
   Auto-unlock all doors
   DISABLED / WHEN SHIFTING INTO PARK (P) / *WHEN DRIVER'S DOOR IS OPENED*
   
   After locking with smart key, allow re-opening within…
   0.5 SECONDS / 1.5 SECONDS / *2.5 SECONDS* / 5 SECONDS
   
   Smart key location to start car
   *FRONT SEATS* / ANYWHERE IN VEHICLE
   
   Open trunk via smart access button
   DISABLED / DOUBLE CLICK / *LONG PRESS*
   
   Open windows and sunroof by holding key in door lock
   ON / *OFF*
   
   Close windows and sunroof by holding key in door lock
   ON / *OFF*
   
   Open windows and sunroof via long-press on remote
   *ON* / OFF
   
   
   
   
   
   

 

Some of those settings can be set from menus either on the small or large display. There is a customizations chart in the manual. I will try to post the relevant section later.

 

Early 2016 Prius could not change between miles & Kilometers. The manuals are here.
2016 Toyota Prius Owners Manual and Warranty - Toyota Owners

Customization section starts on page 752 of the Owners Manual. Column 2 uses the large middle display. 3 is dealer software only.

 

Welcome & enjoy your 2016 Prius.

 

Does anyone know if this option is available on a non US car? I would love to have this enabled on my UK car.

 

It wasn't an option on Carista when I used it.

 

Ok, thanks, at least I know