diff --git a/homeassistant/components/fritzbox/strings.json b/homeassistant/components/fritzbox/strings.json
index cee0afa26c1..d4f59fd1c08 100644
--- a/homeassistant/components/fritzbox/strings.json
+++ b/homeassistant/components/fritzbox/strings.json
@@ -81,6 +81,9 @@
     }
   },
   "exceptions": {
+    "manual_switching_disabled": {
+      "message": "Can't toggle switch while manual switching is disabled for the device."
+    },
     "change_preset_while_active_mode": {
       "message": "Can't change preset while holiday or summer mode is active on the device."
     },
diff --git a/homeassistant/components/fritzbox/switch.py b/homeassistant/components/fritzbox/switch.py
index 0bdf7a9f944..d13f21e1c14 100644
--- a/homeassistant/components/fritzbox/switch.py
+++ b/homeassistant/components/fritzbox/switch.py
@@ -6,9 +6,11 @@ from typing import Any
 
 from homeassistant.components.switch import SwitchEntity
 from homeassistant.core import HomeAssistant, callback
+from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import FritzBoxDeviceEntity
+from .const import DOMAIN
 from .coordinator import FritzboxConfigEntry
 
 
@@ -48,10 +50,20 @@ class FritzboxSwitch(FritzBoxDeviceEntity, SwitchEntity):
 
     async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the switch on."""
+        self.check_lock_state()
         await self.hass.async_add_executor_job(self.data.set_switch_state_on)
         await self.coordinator.async_refresh()
 
     async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn the switch off."""
+        self.check_lock_state()
         await self.hass.async_add_executor_job(self.data.set_switch_state_off)
         await self.coordinator.async_refresh()
+
+    def check_lock_state(self) -> None:
+        """Raise an Error if manual switching via FRITZ!Box user interface is disabled."""
+        if self.data.lock:
+            raise HomeAssistantError(
+                translation_domain=DOMAIN,
+                translation_key="manual_switching_disabled",
+            )
diff --git a/tests/components/fritzbox/__init__.py b/tests/components/fritzbox/__init__.py
index 2bd8f26d73b..61312805e91 100644
--- a/tests/components/fritzbox/__init__.py
+++ b/tests/components/fritzbox/__init__.py
@@ -151,7 +151,7 @@ class FritzDeviceSwitchMock(FritzEntityBaseMock):
     has_thermostat = False
     has_blind = False
     switch_state = "fake_state"
-    lock = "fake_locked"
+    lock = False
     power = 5678
     present = True
     temperature = 1.23
diff --git a/tests/components/fritzbox/test_switch.py b/tests/components/fritzbox/test_switch.py
index 417b355b396..ba3b1de9b2f 100644
--- a/tests/components/fritzbox/test_switch.py
+++ b/tests/components/fritzbox/test_switch.py
@@ -3,6 +3,7 @@
 from datetime import timedelta
 from unittest.mock import Mock
 
+import pytest
 from requests.exceptions import HTTPError
 
 from homeassistant.components.fritzbox.const import DOMAIN as FB_DOMAIN
@@ -29,6 +30,7 @@ from homeassistant.const import (
     UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import entity_registry as er
 import homeassistant.util.dt as dt_util
 
@@ -130,6 +132,7 @@ async def test_turn_on(hass: HomeAssistant, fritz: Mock) -> None:
 async def test_turn_off(hass: HomeAssistant, fritz: Mock) -> None:
     """Test turn device off."""
     device = FritzDeviceSwitchMock()
+
     assert await setup_config_entry(
         hass, MOCK_CONFIG[FB_DOMAIN][CONF_DEVICES][0], ENTITY_ID, device, fritz
     )
@@ -137,9 +140,36 @@ async def test_turn_off(hass: HomeAssistant, fritz: Mock) -> None:
     await hass.services.async_call(
         DOMAIN, SERVICE_TURN_OFF, {ATTR_ENTITY_ID: ENTITY_ID}, True
     )
+
     assert device.set_switch_state_off.call_count == 1
 
 
+async def test_toggle_while_locked(hass: HomeAssistant, fritz: Mock) -> None:
+    """Test toggling while device is locked."""
+    device = FritzDeviceSwitchMock()
+    device.lock = True
+
+    assert await setup_config_entry(
+        hass, MOCK_CONFIG[FB_DOMAIN][CONF_DEVICES][0], ENTITY_ID, device, fritz
+    )
+
+    with pytest.raises(
+        HomeAssistantError,
+        match="Can't toggle switch while manual switching is disabled for the device",
+    ):
+        await hass.services.async_call(
+            DOMAIN, SERVICE_TURN_OFF, {ATTR_ENTITY_ID: ENTITY_ID}, True
+        )
+
+    with pytest.raises(
+        HomeAssistantError,
+        match="Can't toggle switch while manual switching is disabled for the device",
+    ):
+        await hass.services.async_call(
+            DOMAIN, SERVICE_TURN_ON, {ATTR_ENTITY_ID: ENTITY_ID}, True
+        )
+
+
 async def test_update(hass: HomeAssistant, fritz: Mock) -> None:
     """Test update without error."""
     device = FritzDeviceSwitchMock()