English | 17Function of the KDC-MP4533/KDC-MP4033/KDC-MP4033SIn Standby modeSecurity CodeActivating the Security Code disables the usageof audio unit by someone else. Once the SecurityCode is activated, the entry of authorized SecurityCode is required to turn on the audio unit whenit is removed from the vehicle. Indication of thisSecurity Code activation prevents your preciousaudio unit from stealing.• When you activate the Security Code function, it cannotbe released.Note, your Security Code is the 4 digit number entered inyour "Car Audio Passport" in this package.1 Enter StandbyPress the [SRC] button.Select the "STANDBY" display.2 Enter Menu modePress the [MENU] button for at least 1 second.When "MENU" is displayed, "CODE SET" isdisplayed.3 Enter Security Code modePress the Control knob for at least 2 seconds.When "ENTER" is displayed, "CODE" is alsodisplayed.4 Select the digits to enterPush the Control knob towards [4] or[¢].5 Select the Security Code numbersPush the Control knob towards [FM] or [AM].6 Repeat steps 4 and 5, and complete theSecurity Code.7 Confirm the Security CodePress the Control knob for at least 3 seconds.When "RE-ENTER" is displayed, "CODE" is alsodisplayed.8 Do the step 4 through 7 step operation, andreenter the security code."APPROVED" is displayed.The Security Code function activates.• If you enter a Code different from your Security Code,you have to start over from step 4.In Standby modeTouch Sensor ToneSetting the operation check sound (beep sound)ON/OFF.Display Setting"BEEP ON" Beep is heard."BEEP OFF" Beep canceled.Resetting the Security Code function whenthe audio unit is first used after removedfrom the battery power source or the Resetbutton is pressed1 Turn the power ON.2 Do the step 4 through 7 step operation, andreenter the security code."APPROVED" is displayed.Now, you can use the unit.• If an incorrect code is entered, "WAITING" is displayed,and the input prohibition periods shown in the tablebelow is generated.After the input prohibition time lapses, "CODE" isdisplayed, and you can reenter the code.Number of times theincorrect code was inputInput prohibited time1 —2 5 minutes3 1 hour4 24 hours