diff --git a/homeassistant/components/aquostv/media_player.py b/homeassistant/components/aquostv/media_player.py
index cd93ddf9e15..34d5e4161fb 100644
--- a/homeassistant/components/aquostv/media_player.py
+++ b/homeassistant/components/aquostv/media_player.py
@@ -112,7 +112,6 @@ class SharpAquosTVDevice(MediaPlayerEntity):
         | MediaPlayerEntityFeature.VOLUME_SET
         | MediaPlayerEntityFeature.PLAY
     )
-    _attr_volume_step = 2 / 60
 
     def __init__(
         self, name: str, remote: sharp_aquos_rc.TV, power_on_enabled: bool = False
@@ -157,6 +156,22 @@ class SharpAquosTVDevice(MediaPlayerEntity):
         """Turn off tvplayer."""
         self._remote.power(0)
 
+    @_retry
+    def volume_up(self) -> None:
+        """Volume up the media player."""
+        if self.volume_level is None:
+            _LOGGER.debug("Unknown volume in volume_up")
+            return
+        self._remote.volume(int(self.volume_level * 60) + 2)
+
+    @_retry
+    def volume_down(self) -> None:
+        """Volume down media player."""
+        if self.volume_level is None:
+            _LOGGER.debug("Unknown volume in volume_down")
+            return
+        self._remote.volume(int(self.volume_level * 60) - 2)
+
     @_retry
     def set_volume_level(self, volume: float) -> None:
         """Set Volume media player."""