To pair your phone via Bluetooth:
You can set the clock through the setup menu or system settings:
Turn the M.C. dial to select [CLOCK SET] and press to confirm.
Turn the M.C. dial to adjust the hour, then press to confirm.
Turn the M.C. dial to adjust the minute, then press to confirm.
Press the M.C. dial to display the main menu.
Turn the M.C. dial to select [SYSTEM] and press to confirm.
Turn the M.C. dial to select [CLOCK SET] and press to confirm.
Select either [12H] or [24H] for the clock display format.
If Bluetooth is not working, consider the following troubleshooting steps:
To perform a factory reset, which initializes the unit settings:
You can connect an iPhone to the Pioneer DEH-S4250BT via USB or Bluetooth:
Plug in the iPhone using an appropriate cable (e.g., Lightning to USB Cable).
Turn on the Bluetooth function of your iPhone.
Press the M.C. dial to display the [ADD DEVICE] setting. The unit will search for devices.
Turn the M.C. dial to select your iPhone from the list, then press to confirm.
Select the unit name shown in your iPhone display.
Ensure the same 6-digit number appears on both the unit and your iPhone, then select [YES] on the unit if the numbers match.
For Spotify or Pioneer Smart Sync functionality, ensure your iPhone is connected via USB or Bluetooth as required by the application.
After making a Bluetooth connection with your phone, you can control phone calls:
Press the M.C. dial to display the phone menu.
Turn the M.C. dial to select [RECENTS] or [PHONE BOOK], then press to confirm.
If you selected [RECENTS], turn the M.C. dial to select [MISSED], [DIALLED] or [RECEIVED], then press to confirm.
Turn the M.C. dial to select a name or phone number, then press to confirm. The call will start.
To turn off the demonstration display (demo mode):
If your radio has no sound, you might be experiencing an AMP ERROR:
To reset the Bluetooth settings, you can clear the Bluetooth device data:
The RESET button is located behind the detachable front panel. To access it, you must first remove the front panel.
You can reset the microprocessor or initialize the unit settings:
Press the RESET button with a pointed instrument longer than 8 mm.
Press the M.C. dial to display the main menu.
Turn the M.C. dial to select [SYSTEM] and press to confirm.
Turn the M.C. dial to select [SYSTEM RESET] and press to confirm.
Select [YES] to initialize the unit settings. The unit will restart automatically.
To use Spotify with your Pioneer DEH-S4250BT:
Note that some functions of Spotify may not be operated from the unit.
When you turn the ignition switch to ON after installation, the setup menu appears in the display. You can complete the initial setup as follows:
These initial settings can also be adjusted later from the SYSTEM settings and INITIAL settings menus.
Yes, you can connect an Android phone via USB for music playback using AOA (Android Open Accessory) 2.0 or MTP (Media Transfer Protocol) connections.
Note that MTP connection is not compatible with WAV file formats and FLAC file formats, and cannot be used with the MIXTRAX function. Also, some Android devices connected via AOA 2.0 may not work properly or emit sounds due to their own software design.
To adjust the equalizer settings:
*If you select a setting other than [CUSTOM1], [CUSTOM2], and [SET BY APP], you can customize the equalizer curve by pressing and holding the M.C. dial to store it in [CUSTOM1].
To tune radio stations:
Press SRC/OFF to select [RADIO].
Press BAND/ to select the band from [FM1], [FM2], [FM3] or [AM].
Press a number button (1/∧ to 6/1) to select a preset station.
After selecting the band, press the M.C. dial to display the main menu.
Turn the M.C. dial to select [FUNCTION], then press to confirm.
Turn the M.C. dial to select [BSM], then press to confirm.
After selecting the band, press K or I to select a station.
Press and hold K or I to seek an available station. Scanning stops when a station is received. To cancel, press K or I.
Press and hold D during FM reception.
Turn the M.C. dial to select a program type from [NEWS/INFO], [POPULAR], [CLASSICS] or [OTHERS].
Press the M.C. dial. The unit will search for a station.
You can delete paired Bluetooth devices individually or clear all Bluetooth memory:
Make a Bluetooth connection with the Bluetooth telephone.
Press the M.C. dial to display the main menu.
Turn the M.C. dial to select [SYSTEM] and press to confirm.
Turn the M.C. dial to select [DEVICELIST] and press to confirm.
Turn the M.C. dial to select the device you wish to delete, then press to confirm.
Turn the M.C. dial to select [DEL DEVICE] and press to confirm.
Select [DELETE YES] to delete the device information.
Press the M.C. dial to display the main menu.
Turn the M.C. dial to select [SYSTEM] and press to confirm.
Turn the M.C. dial to select [BT MEM CLEAR] and press to confirm.
Select [YES].
You can change the display language through the setup menu or system settings:
Turn the M.C. dial to select [LANGUAGE] and press to confirm.
Select ENG or ESP.
Press the M.C. dial to display the main menu.
Turn the M.C. dial to select [SYSTEM] and press to confirm.
Turn the M.C. dial to select [LANGUAGE] and press to confirm.
Select ENG or ESP.
MIXTRAX is a function that creates a non-stop mix of your music library, accompanied by illumination effects. It is available for USB/iPhone only.
To activate or deactivate MIXTRAX:
The Pioneer DEH-S4250BT supports the following audio formats for playback:
The Pioneer DEH-S4250BT is a CD RDS/Bluetooth RECEIVER with various functionalities:
You can adjust the display brightness or dimmer settings:
Press the M.C. dial to display the main menu.
Turn the M.C. dial to select [ILLUMINATION settings] and press to confirm.
Turn the M.C. dial to select [DIM SETTING] and press to confirm. Here you can select the way to change the display brightness (e.g., [SYNC ILLUMI]*, [SYNC CLOCK], [MANUAL]).
Turn the M.C. dial to select [BRIGHTNESS] and press to confirm. You can then change the display brightness from [1] to [10].
*Only for DEH-X5000BT model. The available setting ranges differ depending on the [DIM SETTING].
To browse music files from a USB device:
Yes, the Pioneer DEH-S4250BT has an AUX input jack (3.5 mm stereo jack).
To use the auxiliary input:
Note that [AUX] must be set to [ON] in the SYSTEM settings for [AUX IN] to be selectable as a source.
The Pioneer DEH-S4250BT has a maximum power output of 50 W × 4 channels at 4 Ω (for no subwoofer).
You can manage multiple paired Bluetooth devices by viewing the device list and switching between connected devices:
To enable or disable the automatic dimmer feature:
*This option is only for the DEH-X5000BT model.
The maximum USB current supply for charging devices on the Pioneer DEH-S4250BT is 1.5 A.
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