2012 Prius hatchback, MFD "Service Menu"

I spent some time searching for an answer as to how to check battery voltage. There were some posts that were close, but not close enough for my model, purchased in Kingston, Ontario, Canada.
I finally have the answer for my model.

This procedure is for a 2012 Prius with a display screen as follows.

Left side panel, --------Right side panel
top to bottom ----------top to bottom

PWR VOL knob -------TUNE SCROLL knob
Up arrow --------------Right arrow
SEEK ------------------SETUP
TRACK---------------- CAR
AUDIO ----------------Phone symbol
blank section ----------blank section

Checking 12v Battery Health

You can easily check out your battery status/charging system
by using the MFD Service Menu.

1 Get your Prius into "Accessory Mode" .
Press the power button without touching the brake pedal.
2 Put the MFD into "Service Menu" mode (green)
Press and hold the "CAR" button on the MFD while turning the headlights on
and off 4 times.
3 Press the "Function Check / Setting" field on the screen.
4 The "Function Check / Setting menu will appear.
5 Press the "Vehicle Signal" field.
6 The "Vehicle Signal Check Mode" screen will appear,
showing

Battery 11.9v ---------SPEED 0 Km/h
IG OFF ---------------TAIL OFF
PKB ON --------------ADIM/TCAN BRIGHT
REV OFF

The 12v battery voltage will be one of the items listed.

7 Put a small load on the battery by pressing the power button again without touching the brake pedal.
If the voltage drops significantly, you need a new battery.
8 Now get your Prius into "Ready Mode" - step on the brake and press the power button.
The battery voltage should immediately rise to about 13.8 volts.
9 Shutting the car down will reset the system back to normal operation.

To put the MFD into "Diagnosis Check" mode
1 Get your Prius into "Accessory Mode" .
Press the power button without touching the brake pedal.
2 Put the MFD into "Diagnosis Check" mode (red)
Press and hold the "SETUP" button on the MFD while turning the headlights on
and off 4 times.
3 A red "Diagnosis Check USA" screen will appear.