diff --git a/.coveragerc b/.coveragerc
index 9c030123f72..deadd4e0b19 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -656,6 +656,7 @@ omit =
     homeassistant/components/mystrom/binary_sensor.py
     homeassistant/components/mystrom/light.py
     homeassistant/components/mystrom/switch.py
+    homeassistant/components/myq/__init__.py
     homeassistant/components/n26/*
     homeassistant/components/nad/media_player.py
     homeassistant/components/nanoleaf/light.py
diff --git a/homeassistant/components/myq/__init__.py b/homeassistant/components/myq/__init__.py
index fd3a46bbb5a..a299968712a 100644
--- a/homeassistant/components/myq/__init__.py
+++ b/homeassistant/components/myq/__init__.py
@@ -8,7 +8,7 @@ from pymyq.errors import InvalidCredentialsError, MyQError
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
 from homeassistant.core import HomeAssistant
-from homeassistant.exceptions import ConfigEntryNotReady
+from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
 from homeassistant.helpers import aiohttp_client
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
@@ -27,8 +27,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
     try:
         myq = await pymyq.login(conf[CONF_USERNAME], conf[CONF_PASSWORD], websession)
     except InvalidCredentialsError as err:
-        _LOGGER.error("There was an error while logging in: %s", err)
-        return False
+        raise ConfigEntryAuthFailed from err
     except MyQError as err:
         raise ConfigEntryNotReady from err
 
@@ -37,6 +36,8 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
     async def async_update_data():
         try:
             return await myq.update_device_info()
+        except InvalidCredentialsError as err:
+            raise ConfigEntryAuthFailed from err
         except MyQError as err:
             raise UpdateFailed(str(err)) from err
 
diff --git a/homeassistant/components/myq/binary_sensor.py b/homeassistant/components/myq/binary_sensor.py
index e3832458b9b..b1b3680343d 100644
--- a/homeassistant/components/myq/binary_sensor.py
+++ b/homeassistant/components/myq/binary_sensor.py
@@ -26,7 +26,7 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     for device in myq.gateways.values():
         entities.append(MyQBinarySensorEntity(coordinator, device))
 
-    async_add_entities(entities, True)
+    async_add_entities(entities)
 
 
 class MyQBinarySensorEntity(CoordinatorEntity, BinarySensorEntity):
diff --git a/homeassistant/components/myq/config_flow.py b/homeassistant/components/myq/config_flow.py
index fa3d6b502cc..78a751a18b1 100644
--- a/homeassistant/components/myq/config_flow.py
+++ b/homeassistant/components/myq/config_flow.py
@@ -5,7 +5,7 @@ import pymyq
 from pymyq.errors import InvalidCredentialsError, MyQError
 import voluptuous as vol
 
-from homeassistant import config_entries, core, exceptions
+from homeassistant import config_entries
 from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
 from homeassistant.helpers import aiohttp_client
 
@@ -18,72 +18,81 @@ DATA_SCHEMA = vol.Schema(
 )
 
 
-async def validate_input(hass: core.HomeAssistant, data):
-    """Validate the user input allows us to connect.
-
-    Data has the keys from DATA_SCHEMA with values provided by the user.
-    """
-
-    websession = aiohttp_client.async_get_clientsession(hass)
-
-    try:
-        await pymyq.login(data[CONF_USERNAME], data[CONF_PASSWORD], websession)
-    except InvalidCredentialsError as err:
-        raise InvalidAuth from err
-    except MyQError as err:
-        raise CannotConnect from err
-
-    return {"title": data[CONF_USERNAME]}
-
-
 class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     """Handle a config flow for MyQ."""
 
     VERSION = 1
 
+    def __init__(self):
+        """Start a myq config flow."""
+        self._reauth_unique_id = None
+
+    async def _async_validate_input(self, username, password):
+        """Validate the user input allows us to connect."""
+        websession = aiohttp_client.async_get_clientsession(self.hass)
+        try:
+            await pymyq.login(username, password, websession)
+        except InvalidCredentialsError:
+            return {CONF_PASSWORD: "invalid_auth"}
+        except MyQError:
+            return {"base": "cannot_connect"}
+        except Exception:  # pylint: disable=broad-except
+            _LOGGER.exception("Unexpected exception")
+            return {"base": "unknown"}
+
+        return None
+
     async def async_step_user(self, user_input=None):
         """Handle the initial step."""
         errors = {}
         if user_input is not None:
-            try:
-                info = await validate_input(self.hass, user_input)
-            except CannotConnect:
-                errors["base"] = "cannot_connect"
-            except InvalidAuth:
-                errors["base"] = "invalid_auth"
-            except Exception:  # pylint: disable=broad-except
-                _LOGGER.exception("Unexpected exception")
-                errors["base"] = "unknown"
-
-            if "base" not in errors:
+            errors = await self._async_validate_input(
+                user_input[CONF_USERNAME], user_input[CONF_PASSWORD]
+            )
+            if not errors:
                 await self.async_set_unique_id(user_input[CONF_USERNAME])
                 self._abort_if_unique_id_configured()
-                return self.async_create_entry(title=info["title"], data=user_input)
+                return self.async_create_entry(
+                    title=user_input[CONF_USERNAME], data=user_input
+                )
 
         return self.async_show_form(
             step_id="user", data_schema=DATA_SCHEMA, errors=errors
         )
 
-    async def async_step_homekit(self, discovery_info):
-        """Handle HomeKit discovery."""
-        if self._async_current_entries():
-            # We can see myq on the network to tell them to configure
-            # it, but since the device will not give up the account it is
-            # bound to and there can be multiple myq gateways on a single
-            # account, we avoid showing the device as discovered once
-            # they already have one configured as they can always
-            # add a new one via "+"
-            return self.async_abort(reason="already_configured")
-        properties = {
-            key.lower(): value for (key, value) in discovery_info["properties"].items()
-        }
-        await self.async_set_unique_id(properties["id"])
-        return await self.async_step_user()
+    async def async_step_reauth(self, user_input=None):
+        """Handle reauth."""
+        self._reauth_unique_id = self.context["unique_id"]
+        return await self.async_step_reauth_confirm()
 
+    async def async_step_reauth_confirm(self, user_input=None):
+        """Handle reauth input."""
+        errors = {}
+        existing_entry = await self.async_set_unique_id(self._reauth_unique_id)
+        if user_input is not None:
+            errors = await self._async_validate_input(
+                existing_entry.data[CONF_USERNAME], user_input[CONF_PASSWORD]
+            )
+            if not errors:
+                self.hass.config_entries.async_update_entry(
+                    existing_entry,
+                    data={
+                        **existing_entry.data,
+                        CONF_PASSWORD: user_input[CONF_PASSWORD],
+                    },
+                )
+                await self.hass.config_entries.async_reload(existing_entry.entry_id)
+                return self.async_abort(reason="reauth_successful")
 
-class CannotConnect(exceptions.HomeAssistantError):
-    """Error to indicate we cannot connect."""
-
-
-class InvalidAuth(exceptions.HomeAssistantError):
-    """Error to indicate there is invalid auth."""
+        return self.async_show_form(
+            description_placeholders={
+                CONF_USERNAME: existing_entry.data[CONF_USERNAME]
+            },
+            step_id="reauth_confirm",
+            data_schema=vol.Schema(
+                {
+                    vol.Required(CONF_PASSWORD): str,
+                }
+            ),
+            errors=errors,
+        )
diff --git a/homeassistant/components/myq/cover.py b/homeassistant/components/myq/cover.py
index e26a969e724..3d587635f2d 100644
--- a/homeassistant/components/myq/cover.py
+++ b/homeassistant/components/myq/cover.py
@@ -32,7 +32,7 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     coordinator = data[MYQ_COORDINATOR]
 
     async_add_entities(
-        [MyQDevice(coordinator, device) for device in myq.covers.values()], True
+        [MyQDevice(coordinator, device) for device in myq.covers.values()]
     )
 
 
@@ -158,9 +158,3 @@ class MyQDevice(CoordinatorEntity, CoverEntity):
         if self._device.parent_device_id:
             device_info["via_device"] = (DOMAIN, self._device.parent_device_id)
         return device_info
-
-    async def async_added_to_hass(self):
-        """Subscribe to updates."""
-        self.async_on_remove(
-            self.coordinator.async_add_listener(self.async_write_ha_state)
-        )
diff --git a/homeassistant/components/myq/strings.json b/homeassistant/components/myq/strings.json
index 19717907b0f..e8a0baa85ff 100644
--- a/homeassistant/components/myq/strings.json
+++ b/homeassistant/components/myq/strings.json
@@ -7,7 +7,14 @@
           "username": "[%key:common::config_flow::data::username%]",
           "password": "[%key:common::config_flow::data::password%]"
         }
-      }
+      },
+      "reauth_confirm": {
+        "description": "The password for {username} is no longer valid.",
+        "title": "Reauthenticate your MyQ Account",
+        "data": {
+          "password": "[%key:common::config_flow::data::password%]"
+        }
+      }        
     },
     "error": {
       "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
@@ -15,6 +22,7 @@
       "unknown": "[%key:common::config_flow::error::unknown%]"
     },
     "abort": {
+      "reauth_successful": "[%key:common::config_flow::abort::reauth_successful%]",
       "already_configured": "[%key:common::config_flow::abort::already_configured_service%]"
     }
   }
diff --git a/homeassistant/components/myq/translations/en.json b/homeassistant/components/myq/translations/en.json
index 9dad2d10cad..5dc6d811c87 100644
--- a/homeassistant/components/myq/translations/en.json
+++ b/homeassistant/components/myq/translations/en.json
@@ -1,7 +1,8 @@
 {
     "config": {
         "abort": {
-            "already_configured": "Service is already configured"
+            "already_configured": "Service is already configured",
+            "reauth_successful": "Re-authentication was successful"
         },
         "error": {
             "cannot_connect": "Failed to connect",
@@ -9,6 +10,13 @@
             "unknown": "Unexpected error"
         },
         "step": {
+            "reauth_confirm": {
+                "data": {
+                    "password": "Password"
+                },
+                "description": "The password for {username} is no longer valid.",
+                "title": "Reauthenticate your MyQ Account"
+            },
             "user": {
                 "data": {
                     "password": "Password",
diff --git a/tests/components/myq/test_config_flow.py b/tests/components/myq/test_config_flow.py
index 3ae2da82f46..3b0d79f6f03 100644
--- a/tests/components/myq/test_config_flow.py
+++ b/tests/components/myq/test_config_flow.py
@@ -57,7 +57,7 @@ async def test_form_invalid_auth(hass):
         )
 
     assert result2["type"] == "form"
-    assert result2["errors"] == {"base": "invalid_auth"}
+    assert result2["errors"] == {"password": "invalid_auth"}
 
 
 async def test_form_cannot_connect(hass):
@@ -79,32 +79,87 @@ async def test_form_cannot_connect(hass):
     assert result2["errors"] == {"base": "cannot_connect"}
 
 
-async def test_form_homekit(hass):
-    """Test that we abort from homekit if myq is already setup."""
-    await setup.async_setup_component(hass, "persistent_notification", {})
-
+async def test_form_unknown_exception(hass):
+    """Test we handle unknown exceptions."""
     result = await hass.config_entries.flow.async_init(
-        DOMAIN,
-        context={"source": config_entries.SOURCE_HOMEKIT},
-        data={"properties": {"id": "AA:BB:CC:DD:EE:FF"}},
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
     )
-    assert result["type"] == "form"
-    assert result["errors"] == {}
-    flow = next(
-        flow
-        for flow in hass.config_entries.flow.async_progress()
-        if flow["flow_id"] == result["flow_id"]
-    )
-    assert flow["context"]["unique_id"] == "AA:BB:CC:DD:EE:FF"
 
+    with patch(
+        "homeassistant.components.myq.config_flow.pymyq.login",
+        side_effect=Exception,
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {"username": "test-username", "password": "test-password"},
+        )
+
+    assert result2["type"] == "form"
+    assert result2["errors"] == {"base": "unknown"}
+
+
+async def test_reauth(hass):
+    """Test we can reauth."""
     entry = MockConfigEntry(
-        domain=DOMAIN, data={CONF_USERNAME: "mock", CONF_PASSWORD: "mock"}
+        domain=DOMAIN,
+        data={
+            CONF_USERNAME: "test@test.org",
+            CONF_PASSWORD: "secret",
+        },
+        unique_id="test@test.org",
     )
     entry.add_to_hass(hass)
 
     result = await hass.config_entries.flow.async_init(
         DOMAIN,
-        context={"source": config_entries.SOURCE_HOMEKIT},
-        data={"properties": {"id": "AA:BB:CC:DD:EE:FF"}},
+        context={"source": config_entries.SOURCE_REAUTH, "unique_id": "test@test.org"},
     )
-    assert result["type"] == "abort"
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "reauth_confirm"
+
+    with patch(
+        "homeassistant.components.myq.config_flow.pymyq.login",
+        side_effect=InvalidCredentialsError,
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                CONF_PASSWORD: "test-password",
+            },
+        )
+
+    assert result2["type"] == "form"
+    assert result2["errors"] == {"password": "invalid_auth"}
+
+    with patch(
+        "homeassistant.components.myq.config_flow.pymyq.login",
+        side_effect=MyQError,
+    ):
+        result3 = await hass.config_entries.flow.async_configure(
+            result2["flow_id"],
+            {
+                CONF_PASSWORD: "test-password",
+            },
+        )
+
+    assert result3["type"] == "form"
+    assert result3["errors"] == {"base": "cannot_connect"}
+
+    with patch(
+        "homeassistant.components.myq.config_flow.pymyq.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.myq.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        result4 = await hass.config_entries.flow.async_configure(
+            result3["flow_id"],
+            {
+                CONF_PASSWORD: "test-password",
+            },
+        )
+
+    assert mock_setup_entry.called
+    assert result4["type"] == "abort"
+    assert result4["reason"] == "reauth_successful"