Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Pioneer DEH-S31BT car stereo receiver. The DEH-S31BT is an in-dash unit featuring CD playback, AM/FM radio, Bluetooth audio streaming and hands-free calling, USB connectivity, and support for Spotify, Pandora, and Android music control, including compatibility with the Pioneer Smart Sync app. Please read this manual thoroughly before using your new receiver to ensure proper operation and to maximize your listening experience.
Safety Information
- Always operate the vehicle in a safe manner. Do not allow the operation of this product to distract you from driving.
- Keep the volume at a level where you can still hear outside sounds, such as emergency vehicle sirens.
- Avoid exposing the unit to moisture or extreme temperatures.
- Do not attempt to disassemble or modify the unit. This can lead to electric shock or other hazards.
- Ensure all wiring is correctly connected to prevent damage to the unit or vehicle.
Package Contents
Verify that all items are present in the package:
- Pioneer DEH-S31BT Car Stereo Receiver
- Wiring Harness
- Mounting Hardware (screws, trim ring)
- Remote Control
- External Microphone (for Bluetooth hands-free calling)
- User Manual (this document)
Setup and Installation
Proper installation is crucial for optimal performance and safety. If you are unsure about any step, it is recommended to consult a professional installer.
- Preparation: Disconnect the vehicle's negative battery terminal before starting installation to prevent electrical shorts.
- Mounting: Install the receiver into the vehicle's dashboard opening using the supplied mounting hardware. Ensure it is securely fastened.
- Wiring Connections:
- Connect the wiring harness to the vehicle's existing wiring, matching colors and functions (e.g., power, ground, speaker wires).
- Connect the antenna cable.
- Connect the external microphone for Bluetooth hands-free calling. Position the microphone in a location that provides clear voice pickup, such as on the sun visor or steering column.
- If using external amplifiers or subwoofers, connect the RCA pre-out cables.
- Initial Power-Up: Reconnect the vehicle's negative battery terminal. Turn on the ignition and power on the receiver.
- Initial Setup: Follow the on-screen prompts for initial setup, including language selection and clock settings.
Figure 1: Front view of the Pioneer DEH-S31BT Car Stereo Receiver. Shows the display, control knob, and various buttons.
Operating Instructions
Basic Operations
- Power On/Off: Press the SRC/OFF button to turn the unit on. Press and hold the SRC/OFF button to turn it off.
- Volume Control: Rotate the Rotary Commander knob to adjust the volume level.
- Source Selection: Press the SRC/OFF button repeatedly to cycle through available sources (FM, AM, CD, USB, Bluetooth Audio, AUX).
- Menu Navigation: Use the Rotary Commander knob and surrounding buttons to navigate menus and settings.
Bluetooth Connectivity
The DEH-S31BT supports Bluetooth for hands-free calling and audio streaming.
- Pairing a Device:
- Ensure Bluetooth is enabled on your mobile device.
- On the DEH-S31BT, select the Bluetooth source.
- Search for available devices on your mobile phone. Select "Pioneer DEH-S31BT" from the list.
- Confirm the pairing code on both devices if prompted.
- Hands-Free Calling: Once paired, you can make and receive calls through the receiver. Use the Phone button to answer/end calls.
- Bluetooth Audio Streaming: Select the Bluetooth Audio source to stream music from your paired device. Use the receiver's controls to play, pause, skip tracks.
USB Playback
Connect a USB storage device (e.g., flash drive) or an Android smartphone to the front USB port for audio playback.
- Insert the USB device into the USB port. The unit will automatically switch to the USB source and begin playback.
- Use the Forward/Reverse buttons to skip tracks.
- Navigate folders and files using the Rotary Commander knob.
CD Playback
- Insert a CD into the disc slot. The unit will automatically switch to the CD source and begin playback.
- Use the Forward/Reverse buttons to skip tracks.
- Press the Pause button to temporarily stop playback.
AM/FM Radio
- Select the FM or AM source.
- Manual Tuning: Press the Up/Down arrow buttons to manually tune to a frequency.
- Seek Tuning: Press and hold the Up/Down arrow buttons to automatically seek the next strong station.
- Preset Stations: Store your favorite stations by tuning to the desired frequency, then pressing and holding one of the preset number buttons (1-6).
Smart Sync App, Spotify, and Pandora Control
The DEH-S31BT offers enhanced control for compatible apps when connected via Bluetooth or USB.
- Pioneer Smart Sync App: Download the Pioneer Smart Sync app on your smartphone. Connect your phone via Bluetooth or USB. The app provides an advanced interface for controlling receiver functions, audio settings, and accessing smartphone apps directly from the receiver.
- Spotify/Pandora: When your smartphone is connected and running the Spotify or Pandora app, you can control playback (play, pause, skip, browse) directly from the DEH-S31BT receiver.
Figure 2: Pioneer DEH-S31BT demonstrating connectivity with a smartphone, highlighting Smart Sync app features.
Maintenance
- Cleaning the Unit: Use a soft, dry cloth to wipe the front panel. For stubborn dirt, dampen the cloth with water. Never use abrasive cleaners, waxes, or solvents.
- Cleaning the Disc Slot: Avoid inserting anything other than a standard CD into the disc slot. If dust or debris accumulates, use a CD lens cleaner disc.
- Battery Replacement (Remote Control): If the remote control stops responding, replace its battery with a new one of the same type (e.g., CR2025).
Troubleshooting
Review the following common issues and their solutions before contacting support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power / Unit does not turn on. | Incorrect wiring, blown fuse, vehicle battery disconnected. | Check power and ground connections. Inspect vehicle's fuse box and the unit's fuse. Ensure battery is connected. |
| No sound from speakers. | Speaker wires incorrectly connected, volume too low, mute function active, fader/balance settings incorrect. | Verify speaker wiring. Increase volume. Check mute status. Adjust fader/balance settings. |
| Bluetooth device cannot pair. | Bluetooth not enabled on phone, device too far, incorrect pairing mode, previous connection interference. | Ensure phone's Bluetooth is on. Bring device closer. Put receiver in pairing mode. Delete previous pairings and try again. |
| USB device not recognized (Error 19). | Incompatible file system, unsupported device, phone syncing software interference. | Ensure USB device is formatted to FAT16/FAT32. Try a different USB device. For smartphones, check for conflicting syncing software or try a different connection mode. |
| CD skips or does not play. | Dirty or scratched CD, unit vibration, foreign object in disc slot. | Clean the CD. Ensure unit is securely mounted. Do not insert non-CD items. |
Specifications
- Model: DEH-S31BT
- Power Output: 50 Watts x 4 (MOSFET amplifier)
- Connectivity: Bluetooth, USB, AUX input
- Compatible Devices: Smartphone, USB storage devices
- Special Features: Pandora, Spotify, Pioneer Smart Sync App support
- Media Playback: CD, CD-R/RW, MP3, WMA, WAV, FLAC (via USB)
- Tuner: AM/FM with RDS
- Display: LCD with customizable illumination
- Dimensions (Product): 9.9 x 8.9 x 4.1 inches (approximate)
- Item Weight: 0.01 ounces (approximate, packaging weight may vary)
- Date First Available: August 9, 2013
Warranty and Support
For warranty information and technical support, please refer to the warranty card included with your product or visit the official Pioneer website. Do not attempt to repair the unit yourself, as this may void your warranty.
Pioneer Official Website: www.pioneerelectronics.com
