Sony MEX-BT5100 Car Stereo Manual

The Sony MEX-BT5100 is a single-DIN car stereo featuring Bluetooth connectivity for hands-free calling and wireless audio streaming, USB input for iPod/iPhone and USB storage devices, AM/FM tuner with 18FM/6AM presets, front auxiliary input, CD playback (CD-R/RW, MP3, WMA), 52W x 4 high power output, customizable illumination (red/white/green), detachable faceplate for security, and advanced audio controls including EQ and loudness. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Playing Media 8. Bluetooth Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit with detachable faceplate, Remote Control (if included), Wiring harness, Bluetooth antenna, USB extension cable, Mounting sleeve.

Feature	Description
Bluetooth	Hands-free calling & wireless audio streaming (A2DP/AVRCP)
USB Port	Connect and control iPod/iPhone or play music from USB flash drives
CD Player	Plays CD, CD-R/RW, MP3 CD, WMA CD
AM/FM Tuner	18 FM & 6 AM station presets
AUX Input	3.5mm front panel input for external audio devices
Power Output	52W x 4 channels (max)
Illumination	Selectable button color (Red/White/Green)
Detachable Face	Security feature to prevent theft
Audio Controls	EQ (5-band), Loudness, Fader/Balance
Display	Multi-line LCD with track/phone info

Installation

Unpack and inspect contents. Ensure vehicle is off and battery disconnected.

Prepare wiring: Match vehicle harness to stereo harness (power, ground, speakers). Use crimp connectors or solder.
Connect antennas: Plug vehicle antenna into rear. Connect Bluetooth antenna if separate.
Mount unit: Insert mounting sleeve into dashboard, secure with bent tabs. Slide stereo into sleeve until it clicks.
Reconnect battery and test basic functions before final assembly.

WARNING! Disconnect vehicle battery before installation to avoid short circuits or damage. Ensure all connections are secure and insulated.

First-Time Setup

Power on the stereo; follow initial setup prompts.

Set illumination: Press SOURCE to turn on, then hold AUDIO to access settings. Select illumination color.
Pair Bluetooth: Enter Bluetooth mode, search for "MEX-BT5100" on your phone, enter PIN "0000" if prompted.
Program radio presets: Tune to desired station, press and hold a preset button (1-6) to store.
Adjust audio: Use AUDIO button to set EQ, fader, balance, and loudness to preference.

CAUTION! Do not operate settings while driving. Park vehicle safely first.

Specifications

Chassis Size: Single DIN (178mm x 50mm).
Bluetooth Profiles: HFP, HSP, A2DP, AVRCP.
Audio Formats: CD-DA, MP3, WMA.
Tuner: PLL Quartz Synthesized AM/FM.
Power Output: 52W x 4 (Max), 17W x 4 (RMS).
Inputs/Outputs: Front USB, Front AUX, Rear Pre-out (optional), Antenna input.
Power Requirement: 12V DC, negative ground.
Operating Temp: -10°C to +60°C.

Controls and Settings

Access menus via AUDIO button. Front Panel: POWER/VOLUME knob, SOURCE, BAND/AUDIO, TUNE/TRACK knobs, USB/AUX port.

Remote (if applicable): POWER, VOLUME, SOURCE, MUTE, PRESET, TRACK buttons.

Audio Settings: EQ (5-band graphic or presets), Loudness (On/Off), Fader/Balance, Subwoofer level (if pre-out used). Bluetooth Settings: Pairing list management, Auto-connection, Phonebook access. System Settings: Illumination color, Beep tone, Reset to factory defaults.

Connecting Devices

USB: Connect iPod/iPhone or USB drive to front port. AUX: 3.5mm cable from device to front AUX input. Bluetooth: Pair phone wirelessly.

Turn ignition to ACC or ON (engine can be off).
Select source: Press SOURCE to cycle through FM/AM/CD/USB/BT/AUX.
For USB: Device should be recognized automatically; use TUNE/TRACK to navigate.
For AUX: Start playback on external device.

Tip: For best USB compatibility, format flash drives as FAT32.

Playing Media

Supports CD, USB, Bluetooth Audio, and AUX.

Insert CD: Label side up into slot. For USB, plug in device.
Play: Press PLAY or select track with TUNE/TRACK knob. For Bluetooth, play from phone.
Skip: Turn TUNE/TRACK knob or press << / >> buttons.
Repeat/Random: Press RPT or RDM during playback (if supported by source).
Folder Navigation (USB/MP3 CD): Press to skip folders.
Detach Faceplate: Press RELEASE button and pull faceplate off for security.

WARNING! Do not insert damaged or irregular-shaped discs. Do not touch the laser lens.

Bluetooth Features

Hands-free Calling: Answer/end calls with PHONE button; use TUNE knob to scroll phonebook. Audio Streaming: Stream music from phone; control playback (play/pause/skip) from stereo. Pairing: Up to 5 devices can be paired; one active at a time.

Care & Maintenance

Use soft, dry cloth to clean faceplate and display. Do not use solvents or abrasive cleaners. Store detached faceplate in protective case.

CAUTION! Avoid extreme heat or moisture. Do not disassemble the unit.

Regulatory Information

FCC ID: AK8MEXBT5100. This device complies with Part 15 of the FCC Rules. Operation is subject to Bluetooth SIG licensing. Copyright © Sony Corporation. For support, visit www.sony.com/electronics/support or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/ignition	Check fuse, ground, and ignition wire connection. Ensure battery is connected.
Bluetooth not pairing	Phone settings/distance	Enable Bluetooth on phone; delete old pairing; ensure within range (3 ft).
USB not recognized	Format/power	Reformat USB to FAT32; try a different USB device; ensure it's not drawing too much power.
No sound from speakers	Wiring/settings	Check speaker wires for shorts; verify fader/balance not set to extreme.
CD won't eject	Mechanical jam	Use small tool to manually eject if possible; unit may require service.

Reset: Hold AUDIO button while turning power on to reset all settings.

Service: 1-800-222-7669; www.sony.com/electronics/support