Mask Key is a help in preventing theft.
1Enter Standby
Press the [SRC] button.
Select the "ALL OFF" display.
2Enter Menu mode
Press the [MENU] button for at least 1 second.
When "MENU" is displayed, "Mask key" is displayed.
3Enter Mask key mode
Press the [4] or [¢] button for at least 1 second.
"TRANSMIT 1" is displayed.
4Enter the Mask Key's signal
Hold down the transmit button on the Mask Key until the full
transmit level indicator lights up in the display.
"TRANSMIT 2" is displayed.
•Keep the Mask Key close to the signal sensor when you transmit
the Mask Key's signal.
•If the Mask Key's signal does not be received correctly, the display
will return to "TRANSMIT 1". In this case, repeat the procedure in
step 4.
5Reenter the Mask Key's signal
Hold down the transmit button on the Mask Key until the full
transmit level indicator lights up in the display.
"APPROVED" is displayed, and the Mask Key function activates.
Press the Reset button and when it's removed from the
battery power source
Because authorization by the Mask Key is required when it's
removed from the vehicle, personalizing this unit by using the

Mask Key

Setting during operation beep sound etc. functions.
The Menu system basic operation method is explained here. The
reference for the Menu items and their setting content is after
this operation explanation.
1Enter Menu mode
Press the [MENU] button for at least 1 second.
"MENU" is displayed.
2Select the menu item
Press the [FM] or [AM] button.
Example: When you want to set the beep sound select the
"Beep" display.
3Set the menu item
Press the [4] or [¢] button.
Example: When "Beep" is selected, each time the button is
pressed it switches "Beep ON" or "Beep OFF". Select 1
of them as the setting.
You can continue by returning to step 2 and setting other items.
4Exit Menu mode
Press the [MENU] button.
When other items that are applicable to the basic operation method
above are displayed afterwards their setting content chart is
entered. (Normally the uppermost setting in the chart is the original
setting.)
Also, the explanation for items that aren't applicable (<Manual Clock
Adjustment>etc.) are entered step by step.

Menu System

Menu system
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English
KDC-7021SE_U.S 02.11.24 6:58 PM Page 22