Sony MEX-BT2500 Car Stereo Manual

The Sony MEX-BT2500 is a single-DIN car stereo featuring Bluetooth connectivity for hands-free calling and audio streaming, USB port for iPod/iPhone and USB memory devices, CD playback (CD-R/RW, MP3, WMA), AM/FM tuner with 18 FM/12 AM presets, front AUX input, 52W x 4 high power output, detachable faceplate for security, and customizable illumination. 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, Wiring harness, Antenna connector, USB port, AUX input, Microphone input for Bluetooth.

Feature	Description
Bluetooth	Hands-free calling and audio streaming (A2DP/AVRCP)
USB port	For iPod/iPhone control and USB memory playback
CD player	Plays CD, CD-R/RW, MP3, WMA discs
AM/FM tuner	18 FM and 12 AM station presets
AUX input	3.5mm front panel input for external audio devices
Power output	52W x 4 channels (max)
Detachable faceplate	Security feature to prevent theft
Customizable illumination	Adjust display color to match vehicle interior
Remote control	Included for convenient operation
EQ settings	Built-in equalizer with presets (ROCK, POP, etc.)

Installation

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

Connect wiring harness: Match colors to vehicle harness (red to ignition, yellow to battery, black to ground).
Connect antenna: Plug vehicle antenna cable into rear antenna connector.
Mount unit: Insert into DIN slot, secure with mounting sleeve and brackets.
Connect speakers: Ensure proper polarity (+/-) for each channel.
Reconnect battery and test functions.

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

First-Time Setup

Power on unit; follow initial setup prompts.

Set clock: Press SOURCE to turn on, hold SETUP to enter menu, select CLOCK.
Pair Bluetooth: Enable Bluetooth on phone, select BT AUDIO source, search for "MEX-BT2500".
Program radio presets: Tune to desired station, press and hold preset button (1-6).
Adjust illumination: In SETUP menu, select ILLUMINATION to choose color.
Set audio preferences: Use AUDIO menu for bass, treble, fader, balance.

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

Specifications

Power Output: 52W x 4 (max), 17W x 4 (RMS).
CD Playback: CD, CD-R/RW, MP3, WMA.
USB Support: iPod/iPhone direct control, USB memory (FAT16/32).
Bluetooth Profiles: HFP 1.5, A2DP 1.2, AVRCP 1.4.
Tuner: AM/FM with 30 station presets (18 FM, 12 AM).
Audio Inputs: Front AUX (3.5mm), rear RCA pre-outs (optional).
Power Supply: 12V DC, negative ground.
Illumination: Customizable (Red, Green, Blue, etc.).
Dimensions: Single-DIN (178mm x 50mm x 159mm).

Controls and Settings

Front Panel: POWER/VOL knob, SOURCE, EJECT, AUX, USB port, SETUP, AUDIO.

Remote: POWER, VOLUME, MUTE, SOURCE, TRACK UP/DOWN, PRESET, SETUP.

SOURCE: Cycle through BT AUDIO, USB, CD, TUNER, AUX. SETUP Menu: CLOCK, ILLUMINATION, BEEP, LANGUAGE, BT SETTINGS, RESET. AUDIO Menu: BASS, TREBLE, FADER, BALANCE, LOUDNESS, EQ (FLAT, ROCK, POP, etc.). TUNER: Manual/auto seek, preset memory.

Connecting Devices

USB: Connect iPod/iPhone or USB memory to front port. AUX: 3.5mm cable to front input. Bluetooth: Pair phone for calls/audio.

Turn off unit before connecting devices.
For USB: Use certified cable; ensure device is supported.
For AUX: Set source to AUX, adjust volume on external device.
For Bluetooth: Enable pairing mode on unit (hold SOURCE).

Tip: Use high-quality cables for best audio performance.

Playing Media

Supports CD, USB, Bluetooth audio, AUX.

Insert CD: Press EJECT, load disc label side up.
USB playback: Connect device, select USB source, navigate folders with /.
Play/Pause: Press / on remote or unit.
Skip tracks: Use / for next/previous.
Random/Repeat: Press RPT during playback for modes (ONE, ALL, FOLDER).
Scan: Press and hold / to scan through tracks.
EQ adjustment: Select AUDIO to choose preset (ROCK, POP, etc.).
Detach faceplate: Press RELEASE button, store securely.

WARNING! Do not insert damaged discs. Keep USB port clean and dry.

Bluetooth Features

Hands-free calling: Pair phone, answer/end calls with / buttons. Audio streaming: Stream music from phone via A2DP. Phonebook access: Sync contacts for voice dialing (if supported).

Care & Maintenance

Disconnect power before cleaning. Use soft, dry cloth for faceplate and unit. Avoid liquids and abrasive cleaners.

CAUTION! Do not use chemicals on display. Store faceplate in protective case.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. ICES-003: Complies with Canadian EMI regulations. Bluetooth® is a registered trademark of Bluetooth SIG, Inc. For support, visit www.sony.com/electronics/support or contact 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/fuse	Check battery and ignition connections; replace fuse (10A).
Bluetooth not pairing	Phone settings	Enable Bluetooth on phone; delete old pairing; restart both devices.
USB not recognized	Format/cable	Ensure USB is FAT16/32; use original cable; try different device.
No sound from speakers	Wiring/settings	Check speaker connections; adjust fader/balance; ensure mute is off.
Poor radio reception	Antenna	Ensure antenna fully extended and connected; check for obstructions.

Reset: SETUP > SYSTEM > RESET to factory defaults.

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