diff --git a/tests/components/fritz/test_services.py b/tests/components/fritz/test_services.py
new file mode 100644
index 00000000000..7293691e96f
--- /dev/null
+++ b/tests/components/fritz/test_services.py
@@ -0,0 +1,54 @@
+"""Tests for Fritz!Tools services."""
+
+from unittest.mock import patch
+
+from homeassistant.components.fritz.const import DOMAIN, SERVICE_SET_GUEST_WIFI_PW
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr
+from homeassistant.setup import async_setup_component
+
+from .const import MOCK_USER_DATA
+
+from tests.common import MockConfigEntry
+
+
+async def test_services(
+    hass: HomeAssistant,
+    device_registry: dr.DeviceRegistry,
+    fc_class_mock,
+    fh_class_mock,
+) -> None:
+    """Test setup of Fritz!Tools services."""
+    assert await async_setup_component(hass, DOMAIN, {})
+    await hass.async_block_till_done()
+
+    services = hass.services.async_services_for_domain(DOMAIN)
+    assert services
+    assert SERVICE_SET_GUEST_WIFI_PW in services
+
+    # without loaded config entry
+    with patch(
+        "homeassistant.components.fritz.coordinator.AvmWrapper.async_trigger_set_guest_password"
+    ) as mock_async_trigger_set_guest_password:
+        await hass.services.async_call(
+            DOMAIN, SERVICE_SET_GUEST_WIFI_PW, {"device_id": "12345678"}
+        )
+        assert not mock_async_trigger_set_guest_password.called
+
+    # with loaded config entry
+    entry = MockConfigEntry(domain=DOMAIN, data=MOCK_USER_DATA)
+    entry.add_to_hass(hass)
+    await hass.config_entries.async_setup(entry.entry_id)
+    await hass.async_block_till_done()
+
+    device = device_registry.async_get_device(
+        identifiers={(DOMAIN, "1C:ED:6F:12:34:11")}
+    )
+    assert device
+    with patch(
+        "homeassistant.components.fritz.coordinator.AvmWrapper.async_trigger_set_guest_password"
+    ) as mock_async_trigger_set_guest_password:
+        await hass.services.async_call(
+            DOMAIN, SERVICE_SET_GUEST_WIFI_PW, {"device_id": device.id}
+        )
+        assert mock_async_trigger_set_guest_password.called