Q: Is it possible to keep the screen backlight on permanently on the TANITA 1479J2 scale?

No, the backlight cannot stay on permanently on the TANITA 1479J2. According to the manual, the screen light automatically turns off after 5 seconds of inactivity . This behavior is automatic and there is no option to disable this function or keep the backlight active permanently. This system is intentionally designed to extend the battery life of your scale. Whenever you need to check the display, movement or interaction with the scale will automatically reactivate the backlight for 5 seconds.

Question 1

How do I turn on my TANITA FitScan UM041F scale and weigh using parameter 4?

Accepted Answer

Here’s how to turn on your TANITA FitScan UM041F scale and take a measurement using parameter 4:

Turn on the scale and select parameter 4

Press the SET button to turn on the scale (you will hear a beep)
Press the MEMORY button (up arrow) to access your saved profiles
Use the arrows to navigate to parameter 4, then press SET to confirm

Take your measurement

Wait for the screen to display 0.0
Step onto the scale with bare, clean, and dry feet
Keep your heels centered on the back electrodes (at the back of the platform)
Stay still until the screen displays all the results

Results displayed in this order

Your weight (in kg, lb, or st-lb)
Body fat percentage
Total body water percentage

Make sure your personal data (age, gender, height) has been correctly programmed into parameter 4 to obtain accurate measurements.

Question 2

What should I do if the ERR code appears when turning on the scale?

Accepted Answer

The ERR code appears when you have moved or stepped on the scale before the display shows "0.0".

How to fix this issue:

Wait for the display to show "0.0" before stepping on the platform
Remain still during the entire measurement
Do not step down until the scale has beeped twice (end of measurement)

Other possible causes:

If the error persists after these checks, check:

If the 4 AA batteries are correctly installed (check the polarity)
If the batteries are new and in good condition (the code "Lo" appears if the batteries are low)
Remove the batteries for a few minutes and reinsert them to reset the scale
If the platform is clean and dry
If your feet are properly positioned on the electrodes of the platform

If the problem persists, the scale may require technical inspection.

Question 3

The TANITA InnerScan V scale does not turn on despite replacing the batteries

Accepted Answer

You have already cleaned the contacts and replaced the batteries, which are the right first steps. Here are additional steps to diagnose the problem:

Check the installation of the 4 AA batteries

Make sure that the 4 AA batteries are all present and fully inserted into the compartment located under the scale.
Check the battery polarity: the + sign should be facing up, the - sign down, as indicated in the compartment. A reversed battery can prevent the device from starting.
Ensure that each battery makes good contact - they should be pushed all the way in.

Test the batteries

If possible, test one of your new batteries in another device (remote control, flashlight) to confirm that they are not defective.
Replace all 4 batteries at the same time if one of them was worn out - do not mix old and new ones.

Check the battery compartment

Ensure that the battery compartment cover is properly closed and locked correctly. An insufficient closure can interrupt the electrical circuit.
Check for any visible debris or corrosion in the compartment.

Turn on the scale

Press the SET button to power on the scale. The display should show "0.0" a few seconds later.
If nothing appears, the device may have an internal electronic fault.

If after these checks the scale still does not turn on, it is likely that there is an internal hardware issue (damaged power circuit). In this case, contact Tanita customer service for troubleshooting or exchange.

Question 4

Is it possible to keep the screen backlight on permanently on the TANITA 1479J2 scale?

Accepted Answer

No, the backlight cannot stay on permanently on the TANITA 1479J2.

According to the manual, the screen light automatically turns off after 5 seconds of inactivity. This behavior is automatic and there is no option to disable this function or keep the backlight active permanently.

This system is intentionally designed to extend the battery life of your scale. Whenever you need to check the display, movement or interaction with the scale will automatically reactivate the backlight for 5 seconds.

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