diff --git a/homeassistant/components/yalexs_ble/__init__.py b/homeassistant/components/yalexs_ble/__init__.py
index 26231a8d58ec..539db81dc054 100644
--- a/homeassistant/components/yalexs_ble/__init__.py
+++ b/homeassistant/components/yalexs_ble/__init__.py
@@ -12,6 +12,7 @@ from yalexs_ble import (
 )
 
 from homeassistant.components import bluetooth
+from homeassistant.components.bluetooth import BluetoothReachabilityIntent
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_ADDRESS, EVENT_HOMEASSISTANT_STOP, Platform
 from homeassistant.core import CALLBACK_TYPE, CoreState, Event, HomeAssistant, callback
@@ -24,6 +25,7 @@ from .const import (
     CONF_LOCAL_NAME,
     CONF_SLOT,
     DEVICE_TIMEOUT,
+    DOMAIN,
 )
 from .models import YaleXSBLEData
 from .util import async_find_existing_service_info, bluetooth_callback_matcher
@@ -83,7 +85,19 @@ async def async_setup_entry(hass: HomeAssistant, entry: YALEXSBLEConfigEntry) ->
         # If we are starting and the advertisement is not found, do not delay
         # the setup. We will wait for the advertisement to be found and then
         # discovery will trigger setup retry.
-        raise ConfigEntryNotReady("{local_name} ({address}) not advertising yet")
+        raise ConfigEntryNotReady(
+            translation_domain=DOMAIN,
+            translation_key="device_not_advertising",
+            translation_placeholders={
+                "local_name": local_name,
+                "address": address,
+                "reason": bluetooth.async_address_reachability_diagnostics(
+                    hass,
+                    address.upper(),
+                    BluetoothReachabilityIntent.CONNECTION,
+                ),
+            },
+        )
 
     entry.async_on_unload(
         bluetooth.async_register_callback(
diff --git a/homeassistant/components/yalexs_ble/strings.json b/homeassistant/components/yalexs_ble/strings.json
index c4e4210a0b64..595130107599 100644
--- a/homeassistant/components/yalexs_ble/strings.json
+++ b/homeassistant/components/yalexs_ble/strings.json
@@ -53,6 +53,11 @@
       }
     }
   },
+  "exceptions": {
+    "device_not_advertising": {
+      "message": "{local_name} ({address}) is not advertising yet: {reason}"
+    }
+  },
   "options": {
     "step": {
       "device_options": {
diff --git a/tests/components/yalexs_ble/test_init.py b/tests/components/yalexs_ble/test_init.py
new file mode 100644
index 000000000000..1ad6f260c2bf
--- /dev/null
+++ b/tests/components/yalexs_ble/test_init.py
@@ -0,0 +1,61 @@
+"""Test the Yale Access Bluetooth init."""
+
+from unittest.mock import AsyncMock, MagicMock, patch
+
+import pytest
+
+from homeassistant.components.yalexs_ble.const import (
+    CONF_KEY,
+    CONF_LOCAL_NAME,
+    CONF_SLOT,
+    DOMAIN,
+)
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.const import CONF_ADDRESS
+from homeassistant.core import CoreState, HomeAssistant
+
+from . import YALE_ACCESS_LOCK_DISCOVERY_INFO
+
+from tests.common import MockConfigEntry
+
+
+async def test_setup_retries_when_not_advertising_at_startup(
+    hass: HomeAssistant,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test setup is retried with a diagnostic reason when not advertising at startup."""
+    entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            CONF_LOCAL_NAME: YALE_ACCESS_LOCK_DISCOVERY_INFO.name,
+            CONF_ADDRESS: YALE_ACCESS_LOCK_DISCOVERY_INFO.address,
+            CONF_KEY: "2fd51b8621c6a139eaffbedcb846b60f",
+            CONF_SLOT: 66,
+        },
+        unique_id=YALE_ACCESS_LOCK_DISCOVERY_INFO.address,
+    )
+    entry.add_to_hass(hass)
+
+    hass.set_state(CoreState.starting)
+
+    push_lock = MagicMock()
+    push_lock.start = AsyncMock(return_value=MagicMock())
+
+    with (
+        patch("homeassistant.components.yalexs_ble.close_stale_connections_by_address"),
+        patch("homeassistant.components.yalexs_ble.PushLock", return_value=push_lock),
+        patch(
+            "homeassistant.components.yalexs_ble.bluetooth."
+            "async_address_reachability_diagnostics",
+            return_value="mock reachability reason",
+        ),
+    ):
+        await hass.config_entries.async_setup(entry.entry_id)
+        await hass.async_block_till_done()
+
+    assert entry.state is ConfigEntryState.SETUP_RETRY
+    assert (
+        f"{YALE_ACCESS_LOCK_DISCOVERY_INFO.name} "
+        f"({YALE_ACCESS_LOCK_DISCOVERY_INFO.address}) is not advertising yet: "
+        "mock reachability reason" in caplog.text
+    )