Alpine ILX-W670 Bluetooth Not Working | Quick Fix Steps

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An Alpine ILX-W670 Bluetooth not working issue usually traces back to pairing limits, phone settings, outdated firmware, or installation faults.

When Bluetooth drops on your Alpine iLX-W670, the whole system feels broken. Calls fail, music pauses mid-song, and the head unit might stop auto-connecting the moment you start the car. The good news: most cases come down to a handful of repeat reasons you can sort out at home with a bit of patience.

This guide walks you through fast checks, deeper fixes, and long-term habits that keep the Alpine iLX-W670 talking cleanly to your phone. We’ll tackle both sides of the link: the head unit settings and the iPhone or Android menus that often cause the trouble.

By the end, you should know whether you can solve the alpine ilx-w670 bluetooth not working problem yourself, or whether it is time to speak with your installer or Alpine’s service team for hardware help.

Why Alpine ILX-W670 Bluetooth Not Working Feels So Random

Bluetooth on the iLX-W670 handles two main jobs: hands-free calling and wireless audio streaming. Apple CarPlay and Android Auto still rely on a wired USB link, so you can see odd “half-working” cases where calls connect but music does not, or the other way around. That mismatch makes faults feel random even when the root cause is simple.

On this head unit, the Bluetooth name typically shows as iLX-W670, and pairing uses a basic passcode such as 0000, as mentioned in the official owner’s manual. If either side stores outdated pairing data, the connection can fail even though both devices are in range and powered up.

You’ll usually run into one of these patterns:

  • Pairing never completes — The phone sees the unit, you tap it, then pairing fails or loops. This often hints at a full paired-device list, a wrong PIN, or old entries that need clearing.
  • Calls work but music is silent — The call profile links, but media audio is disabled on the phone’s Bluetooth settings, or the iLX-W670 sits on a different source such as Radio or USB.
  • Music works but calls stay on the phone — The phone routes call audio to its own speaker, usually due to a per-device call audio toggle, permission choice, or UI prompt that was dismissed.
  • Connection drops while driving — Power dips, interference, or a loose harness behind the dash can knock Bluetooth offline, especially if the head unit briefly reboots.

Once you match your symptom to one of these patterns, the later sections will give you a targeted fix instead of random menu pressing.

Quick Checks To Revive Alpine ILX-W670 Bluetooth

Before you change deeper settings, run through a quick sweep. Many alpine ilx-w670 bluetooth not working complaints vanish as soon as the basic connection state is refreshed on both sides.

  1. Restart The Head Unit And Phone — Turn the car off, wait at least 30 seconds so the iLX-W670 fully powers down, then start the car again. Also restart your phone so its Bluetooth stack reloads.
  2. Toggle Bluetooth Off And On — On your phone, open the Bluetooth menu, switch it off, wait a few seconds, then turn it back on. Do the same inside the iLX-W670 Bluetooth settings screen.
  3. Confirm You’re Pairing The Right Device — On your phone, tap the entry that matches the display name shown on the iLX-W670 screen. Avoid tapping older Alpine entries that may still sit in the list from a previous car or unit.
  4. Move The Phone Closer — During pairing, keep the phone near the head unit, away from metal mounts or thick storage bins that can weaken the signal.
  5. Switch To The Bluetooth Audio Source — After pairing, tap the Bluetooth audio source on the Alpine home screen so music actually routes to that input instead of staying on Radio or USB.

If Bluetooth springs back after this set of checks but fails again later, the underlying cause is probably in your pairing history, phone settings, or firmware version. That’s where the next sections help.

Fix Alpine ILX-W670 Bluetooth Connection Problems Step By Step

The iLX-W670 stores a list of paired devices and uses that list to decide which phone to grab first when the car powers up. Once that list is full or filled with old entries, new phones may refuse to pair or auto-connect. Alpine’s help pages mention clearing unused devices as a common fix for pairing failures on their Bluetooth head units.

Clear Old Pairings On Both Sides

  1. Open The Phone’s Bluetooth List — On your iPhone or Android phone, open the Bluetooth menu, find any entries named iLX-W670 or similar, and tap to forget or remove them.
  2. Remove Devices On The iLX-W670 — On the Alpine screen, go into Setup, then the Bluetooth menu, and delete phones you no longer use. Some firmware versions show a clear-all option if the list is full.
  3. Restart After Clearing — Power cycle the car and the phone again so both sides start fresh with empty pairing state.

Pair From The Alpine Screen, Not Only The Phone

  1. Make The Head Unit Discoverable — On the iLX-W670, open the Bluetooth setup screen and confirm that pairing mode is active. The manual notes that the unit exposes a Bluetooth name and passcode when ready.
  2. Start Pairing On The Phone — On your phone, search for Bluetooth devices and tap the iLX-W670 entry as soon as it appears.
  3. Enter The Correct Passcode — When prompted for a PIN, type the code shown on the Alpine display. Many units use 0000 by default, but always follow the code that appears on your screen.
  4. Allow Contacts And Call Audio — When the phone asks for access to contacts, call logs, or messages, press allow so hands-free functions can work. If you deny this, calls may route oddly.

Match Your Symptom To A Targeted Fix

The table below gives a fast way to decide where to spend your time next.

Symptom Likely Cause First Fix To Try
Phone never pairs Full device list, wrong PIN, old entries Clear pairings on both sides, then retry with correct code
Pairs, then drops in minutes Phone power saving, interference, head unit reboot Disable aggressive battery modes, keep phone near dash, watch for screen restarts
Calls work, music silent Media audio disabled or wrong source Enable media audio on phone and switch the iLX-W670 to Bluetooth source
Music plays, calls stay on phone Call audio toggled off for this device Turn on call audio in the phone’s Bluetooth settings for iLX-W670
No devices can pair at all Firmware bug or hardware fault Check firmware version, update from Alpine site, then test again

Phone Settings That Break ILX-W670 Bluetooth Pairing

Modern phones add layers of privacy, power saving, and priority rules that can quietly block the Alpine from connecting the way it should. Even if the head unit is set up correctly, a single switch in iOS or Android can give you a fresh alpine ilx-w670 bluetooth not working headache every morning.

Common iPhone Quirks

  • Check CarPlay Versus Bluetooth Behavior — If you plug in for CarPlay, your iPhone may route most tasks through the cable and reduce the Bluetooth role to calls only. Unplug, then test plain Bluetooth audio and calls to see whether the problem appears only in one mode.
  • Enable Contacts And Favorites Access — Open the iPhone Bluetooth menu, tap the “i” next to the Alpine entry, and enable contact sync so the phone book and caller ID work as intended.
  • Allow Bluetooth Access For Music Apps — In Settings → Privacy & Security → Bluetooth, confirm that your music and navigation apps can use Bluetooth, then retest audio streaming.
  • Reset Network Settings As A Last Resort — If every device gives trouble, not just the iLX-W670, a network reset on the iPhone can clear deep Bluetooth glitches. This step wipes Wi-Fi and VPN details, so write down passwords first.

Common Android Quirks

  • Enable Both Media And Call Audio — In the paired device screen for the Alpine entry, make sure both “Calls” and “Audio” toggles are on so sound does not split between the phone speaker and the car.
  • Disable Aggressive Battery Modes For Bluetooth Apps — Some devices shut down music and calling apps in the background. Whitelist your main audio and navigation apps from heavy battery saving modes.
  • Turn Off Randomized MAC For Troubleshooting — On certain Android builds, per-device random MAC options can confuse head units. Temporarily set the connection to use the phone MAC instead, then test pairing again.
  • Clear Bluetooth Cache — On many Android phones you can open the Bluetooth system app in settings, clear cache and data, then restart the phone to rebuild everything from a clean base.

If Bluetooth behaves with other devices but refuses to stay solid with the iLX-W670 even after these changes, the issue sits closer to the head unit’s firmware or wiring.

When Firmware, Wiring, Or Hardware Cause Bluetooth Trouble

The Alpine iLX-W670 has already received firmware updates since launch. Alpine’s firmware page lists version V2.0.1/MCU 2.0.67 for this model, with fixes linked to system behavior and feature quirks. While release notes often talk about steering wheel adapter mode or Siri behavior, core updates can still stabilize overall operation, including Bluetooth.

Check And Update Your Firmware Safely

  1. Find Your Current Version — On the iLX-W670, open Setup, then Product Information, and read the firmware and MCU version shown on screen.
  2. Compare With Alpine’s Firmware Page — Visit Alpine’s official firmware section and confirm whether a newer iLX-W670 package exists than the one listed on your head unit.
  3. Prepare A Clean USB Drive — Format a small USB drive to FAT32, then copy the extracted update files exactly as described in Alpine’s update manual.
  4. Run The Update Without Interruptions — Plug the USB drive into the Alpine unit, start the update from the menu, and leave the ignition and head unit on until the process finishes and the unit reboots on its own.

Firmware updates should always follow the official step-by-step instructions for your exact model (iLX-W670, not iLX-W670M or iLX-W670S). Using the wrong file can damage the unit, so double-check the model number printed on the front panel and in the menus before you begin.

Spotting Wiring Or Hardware Problems

When Bluetooth faults survive resets, fresh pairing, and firmware updates, the wiring behind the dash or the hardware inside the head unit starts to look suspicious.

  • Watch For Random Reboots — If the screen restarts when you hit bumps, adjust the volume, or turn on other accessories, the unit may have a loose power or ground connection.
  • Check The Microphone Lead — A pinched or unplugged microphone cable can make callers say they can’t hear you, which feels like a Bluetooth failure even though the link itself stays up.
  • Ask Your Installer To Recheck Harnesses — If a shop fitted the unit, book time for them to recheck power, ground, and any steering wheel control modules tied into the system.
  • Contact Alpine Service If Needed — When no phone will pair, even at close range with a clean install and fresh firmware, the Bluetooth radio in the unit may have failed and needs professional service.

Prevent Alpine ILX-W670 Bluetooth Issues In The Long Run

Once everything behaves, a few simple habits keep the link solid so you don’t end up chasing the same alpine ilx-w670 bluetooth not working problem again in a few months.

  1. Keep Only Active Phones In The List — Every couple of weeks, delete phones you no longer use with the car so the paired-device list stays slim and easy for the head unit to manage.
  2. Stick To One Main Driver Phone — If several people drive the car, choose one primary phone for auto-connect and let others pair only when they ride along to reduce priority conflicts.
  3. Update Firmware During Routine Service — When you already plan a visit to your installer or have time in the driveway, check Alpine’s site for fresh firmware and apply updates that match your model.
  4. Avoid Aggressive Task Killers On Your Phone — Third-party apps that close background processes can kill music and calling apps mid-drive. Keep those disabled while connected to the iLX-W670.
  5. Protect The USB Port And Cables — Even though Bluetooth is wireless, many people plug in for CarPlay or Android Auto. Damaged USB cables can confuse connection modes and make diagnosis harder.

With these habits in place, Alpine ILX-W670 Bluetooth not working moments should turn into rare hiccups instead of a daily frustration. You’ll spend more time listening to music and taking calls, and far less time digging through menus on the side of the road.