Sony K55XR52BP Voice Remote Not Working: IR vs Bluetooth, Pairing, and Fixes

On the Sony K55XR52BP the Voice Remote sends normal commands via infrared, but the Google Assistant microphone strictly requires a Bluetooth pairing. If the remote is entirely unresponsive, begin with fresh batteries, ensure a clear line of sight to the TV's bottom sensor, and perform a power reset. If only the voice search fails, re-pair the device under Settings → Remotes & Accessories → Remote control and follow the instructions.

Why the Sony Voice Remote Half-Works: Infrared Buttons and Bluetooth Voice

The provided RMF-TX820U (Sony Voice Remote Control) is fundamentally an infrared controller, despite lacking a visible IR window. Essential inputs—power, volume, and menu navigation—are transmitted invisibly. Conversely, the voice search features explicitly require an active Bluetooth link.

Consequently, you might encounter a situation where navigation buttons function normally, but voice commands ignore you. This indicates the remote has lost its Bluetooth pairing. To utilise voice features, the TV must be configured as a Google TV (not basic mode) with an active internet connection and Google Account. Access these options by pressing Quick Settings and selecting [Settings].

When Nothing Responds: Batteries, Power-Button Trick, and TV Buttons

If the remote is entirely dead, test the TV's built-in physical buttons first. If the screen responds, the remote is definitely the culprit. Should you need a replacement, explore the remote controls category for compatible models.

Try Sony's proven residual power drain trick:

1. Remove the batteries.
2. Hold the Power button on the remote for 3 seconds.
3. Wait one minute to discharge internal components.
4. Reinsert the batteries with correct polarity.

If this fails, insert completely fresh, unmixed batteries. Optionally, clean the internal contacts using isopropyl alcohol and a cotton swab. Finally, press every button twice to dislodge any stuck keys.

Is the Remote Sending at All? Phone-Camera IR Test

Verify infrared transmission using a smartphone camera. For broader troubleshooting, consult our guide on common remote control problems and how to fix them.

1. Point the remote's front emitter at your phone's camera app.
2. Hold any remote button.
3. Look at the phone screen for a visible light indicating successful transmission.
4. If you see nothing, try the front selfie camera, as rear cameras often contain IR filters.

If no light appears, replace the batteries. If the issue persists, the remote is broken. Conversely, a continuous light without pressing anything indicates a stuck key; remove the batteries and press all keys repeatedly to free it.

Soundbar in Front of the TV and Other Blockers

Your K55XR52BP features an operational response LED at the bottom centre, glowing white upon receiving remote signals. This provides quick visual confirmation, though it can be disabled in Settings → System → LED indicator.

Ensure the lower screen area remains unobstructed. A soundbar positioned directly in front of the IR sensor will block commands. Additionally, verify all factory protective tape is removed. For Bluetooth issues, move nearby wireless devices like phones or speakers, which can introduce pairing interference.

Google Assistant Button Does Nothing: Re-Pair the Remote

When navigation works but the microphone is dead, Bluetooth re-pairing is required. If the remote has irreparably failed, purchasing an original remote control will fully restore voice capabilities once paired.

To re-pair:

1. Press Quick Settings and open [Settings].
2. Select [Remotes & Accessories].
3. Open [Remote control].
4. Follow the setup steps.

If an old pairing exists, remove it first. Select SONY TV VRC 001 or SONY TV RC MIC 001, choose Unpair, confirm, and retry pairing. Attempt this with fresh batteries. When paired successfully, the remote's LED will illuminate while holding the Google Assistant/MIC button.

Remote Software Update and TV Software Update

Updating both devices prevents recurring connectivity glitches. To update the remote:

1. Open Settings.
2. Go to Remotes & Accessories.
3. Select Remote control.
4. Choose Software update.

If updates fail, replace the batteries. If prompted to "use a Voice Remote Control to select this item", the Bluetooth module has temporarily frozen—reinsert the batteries or restart the TV.

To update the TV, press Input, select [Help] (add via [Edit] if necessary), choose [Status & Diagnostics], and navigate to [System software update]. Enabling automatic updates is highly recommended.

BRAVIA Sync: Controlling the Soundbar or Player with the TV Remote

The K55XR52BP supports BRAVIA Sync (HDMI-CEC), allowing the TV remote to control a connected soundbar or AV receiver's volume and mute functions.

1. Press Quick Settings and enter Settings.
2. Open Channels & Inputs.
3. Select External inputs.
4. Enable BRAVIA Sync control under BRAVIA Sync settings.

For optimal audio, connect the soundbar to the TV's ARC or eARC/ARC HDMI port. Unwanted device power cycling can be resolved by adjusting the auto power on/off settings within this menu.

Restart, Factory Reset, or a New Remote?

If all else fails, perform a power reset. Hold the remote's Power button for 5 seconds until the TV restarts. Personal data remains intact. Alternatively, unplug the TV, press its built-in power button, wait 2 minutes, and plug it back in.

As a last resort, a factory reset clears everything (Wi-Fi, apps, accounts): Quick Settings → Settings → System → About → Reset → Factory data reset → Erase everything.

If IR tests fail or keys are permanently stuck, the hardware is damaged. Contact authorised service, or purchase a replacement remote control of a different look for immediate infrared functionality.

For simplified navigation, a replacement remote control for seniors is an excellent alternative.

You can learn more about assessing your needs in our guide on how to find the right replacement remote control.

FAQ

Why do volume and power work, but the Google Assistant button doesn't? Standard buttons use infrared, while voice requires Bluetooth. Re-pair the remote in Settings → Remotes & Accessories → Remote control.

Do I have to pair a new remote with the K55XR52BP? Yes, for voice search. Classic infrared buttons work immediately without pairing.

How do I restart the TV without losing settings? Hold the remote's Power button for 5 seconds, or unplug the TV for 2 minutes. Settings remain intact.

Can the TV remote control my soundbar? Yes, enable BRAVIA Sync (HDMI-CEC) and connect the soundbar to the HDMI ARC/eARC port.

How can I tell if the remote is broken? Point it at a phone camera and press a button. If no light appears (with new batteries), it is broken.