diff --git a/vehicle-data-platform/apps/web/src/App.tsx b/vehicle-data-platform/apps/web/src/App.tsx
index 79a29f2d..7ce2f20e 100644
--- a/vehicle-data-platform/apps/web/src/App.tsx
+++ b/vehicle-data-platform/apps/web/src/App.tsx
@@ -600,7 +600,7 @@ export default function App() {
   };
 
   const pages: Record<PageKey, JSX.Element> = {
-    dashboard: <Dashboard onOpenVehicle={openVehicle} onOpenQuality={openQuality} onOpenMap={openMap} onOpenRealtime={openRealtime} onOpenVehicles={openVehicles} onOpenHistory={openHistoryWithFilters} onOpenMileage={openMileageWithFilters} />,
+    dashboard: <Dashboard onOpenVehicle={openVehicle} onOpenQuality={openQuality} onOpenMap={openMap} onOpenRealtime={openRealtime} onOpenVehicles={openVehicles} onOpenHistory={openHistoryWithFilters} onOpenMileage={openMileageWithFilters} customerTimeWindow={customerTimeWindow} />,
     vehicles: <Vehicles onOpenVehicle={openVehicle} onOpenQuality={openQuality} onOpenMap={openMap} onOpenRealtime={openRealtime} onOpenHistory={openHistoryWithFilters} onOpenMileage={openMileageWithFilters} onFiltersChange={updateVehicleFilters} initialFilters={vehicleFilters} />,
     map: <Realtime mode="map" title="车辆实时地图" description="以车辆为中心查看位置分布、在线状态、关注车辆和轨迹入口" onOpenVehicle={openVehicle} onOpenHistory={openHistoryForVehicle} onOpenQuality={openQuality} onFiltersChange={updateMapFilters} initialFilters={realtimeFilters} />,
     realtime: <Realtime onOpenVehicle={openVehicle} onOpenHistory={openHistoryForVehicle} onOpenQuality={openQuality} onFiltersChange={updateRealtimeFilters} initialFilters={realtimeFilters} />,
diff --git a/vehicle-data-platform/apps/web/src/pages/Dashboard.tsx b/vehicle-data-platform/apps/web/src/pages/Dashboard.tsx
index 98178fa7..2e09a01a 100644
--- a/vehicle-data-platform/apps/web/src/pages/Dashboard.tsx
+++ b/vehicle-data-platform/apps/web/src/pages/Dashboard.tsx
@@ -154,6 +154,16 @@ function dayRangeText(dateFrom?: string, dateTo?: string) {
   return days <= 0 ? '同日或倒置时间窗' : `${days} 天窗口`;
 }
 
+function naturalDayRangeText(dateFrom?: string, dateTo?: string) {
+  if (!dateFrom && !dateTo) return '未限定时间';
+  if (!dateFrom || !dateTo) return '单边时间窗';
+  const start = new Date(`${dateFrom}T00:00:00+08:00`).getTime();
+  const end = new Date(`${dateTo}T00:00:00+08:00`).getTime();
+  if (!Number.isFinite(start) || !Number.isFinite(end)) return '时间格式待确认';
+  const days = Math.max(0, Math.round((end - start) / 86400000)) + 1;
+  return days <= 0 ? '同日或倒置时间窗' : `${days} 天窗口`;
+}
+
 function priorityIssueVehicleLabel(row: QualityIssueRow) {
   const identity = row.vin?.trim() && row.vin !== 'unknown' ? row.vin.trim() : row.phone?.trim();
   return [row.plate?.trim(), identity].filter(Boolean).join(' / ') || row.sourceEndpoint || '-';
@@ -261,6 +271,14 @@ function sourceConsistencyAction(row: VehicleCoverageRow, onFilter: (filters: Re
   return <Tag color={color}>{label}</Tag>;
 }
 
+function defaultTimeMonitorFilters() {
+  const today = todayDateString();
+  return {
+    dateFrom: previousDateString(today),
+    dateTo: today
+  };
+}
+
 export function Dashboard({
   onOpenVehicle,
   onOpenQuality,
@@ -268,7 +286,8 @@ export function Dashboard({
   onOpenRealtime,
   onOpenVehicles,
   onOpenHistory,
-  onOpenMileage
+  onOpenMileage,
+  customerTimeWindow
 }: {
   onOpenVehicle: (vin: string, protocol?: string) => void;
   onOpenQuality: (filters?: Record<string, string>) => void;
@@ -277,6 +296,7 @@ export function Dashboard({
   onOpenVehicles: (filters?: Record<string, string>) => void;
   onOpenHistory: (filters?: Record<string, string>) => void;
   onOpenMileage: (filters?: Record<string, string>) => void;
+  customerTimeWindow?: Record<string, string>;
 }) {
   const [summary, setSummary] = useState<DashboardSummary | null>(null);
   const [serviceSummary, setServiceSummary] = useState<VehicleServiceSummary | null>(null);
@@ -284,13 +304,7 @@ export function Dashboard({
   const [locations, setLocations] = useState<VehicleRealtimeRow[]>([]);
   const [qualityIssues, setQualityIssues] = useState<QualityIssueRow[]>([]);
   const [opsHealth, setOpsHealth] = useState<OpsHealth | null>(null);
-  const [timeMonitorFilters, setTimeMonitorFilters] = useState<Record<string, string>>(() => {
-    const today = todayDateString();
-    return {
-      dateFrom: previousDateString(today),
-      dateTo: today
-    };
-  });
+  const [timeMonitorFilters, setTimeMonitorFilters] = useState<Record<string, string>>(defaultTimeMonitorFilters);
   const [loading, setLoading] = useState(true);
   const [coverageLoading, setCoverageLoading] = useState(false);
   const [coverageServiceStatusTitle, setCoverageServiceStatusTitle] = useState('');
@@ -343,6 +357,25 @@ export function Dashboard({
       .finally(() => setLoading(false));
   }, []);
 
+  useEffect(() => {
+    const dateFrom = customerTimeWindow?.dateFrom?.trim();
+    const dateTo = customerTimeWindow?.dateTo?.trim();
+    if (!dateFrom && !dateTo) {
+      return;
+    }
+    setTimeMonitorFilters((previous) => {
+      const next = {
+        ...previous,
+        dateFrom: dateFrom ?? '',
+        dateTo: dateTo ?? ''
+      };
+      if (previous.dateFrom === next.dateFrom && previous.dateTo === next.dateTo) {
+        return previous;
+      }
+      return next;
+    });
+  }, [customerTimeWindow?.dateFrom, customerTimeWindow?.dateTo]);
+
   const serviceActionQueue = useMemo<Array<{ label: string; count: number; filters: Record<string, string>; detail: string }>>(() => {
     const items: Array<{ label: string; count: number; filters: Record<string, string>; detail: string }> = [];
     if ((serviceSummary?.noDataVehicles ?? 0) > 0) {
@@ -873,7 +906,14 @@ export function Dashboard({
     }
   ];
   const timeMonitorScopeValue = timeMonitorScope();
-  const timeMonitorWindowLabel = dayRangeText(timeMonitorScopeValue.dateFrom, timeMonitorScopeValue.dateTo);
+  const usesCustomerTimeWindow = Boolean(
+    (customerTimeWindow?.dateFrom || customerTimeWindow?.dateTo)
+    && customerTimeWindow?.dateFrom === timeMonitorScopeValue.dateFrom
+    && customerTimeWindow?.dateTo === timeMonitorScopeValue.dateTo
+  );
+  const timeMonitorWindowLabel = usesCustomerTimeWindow
+    ? naturalDayRangeText(timeMonitorScopeValue.dateFrom, timeMonitorScopeValue.dateTo)
+    : dayRangeText(timeMonitorScopeValue.dateFrom, timeMonitorScopeValue.dateTo);
   const timeMonitorChecklist = [
     {
       label: '范围可解释',
@@ -1003,7 +1043,7 @@ export function Dashboard({
     {
       step: '1',
       label: '锁定范围',
-      value: dayRangeText(timeMonitorScopeValue.dateFrom, timeMonitorScopeValue.dateTo),
+      value: timeMonitorWindowLabel,
       detail: timeMonitorScopeValue.keyword ? `单车 ${timeMonitorScopeValue.keyword}` : '先确认车辆或车辆池，再应用同一时间窗。',
       action: '应用时间窗',
       color: timeMonitorHasRange ? 'green' as const : 'orange' as const,
diff --git a/vehicle-data-platform/apps/web/src/test/App.test.tsx b/vehicle-data-platform/apps/web/src/test/App.test.tsx
index 6deb5312..e92d657c 100644
--- a/vehicle-data-platform/apps/web/src/test/App.test.tsx
+++ b/vehicle-data-platform/apps/web/src/test/App.test.tsx
@@ -7324,6 +7324,7 @@ test('topbar customer time window presets support common monitoring ranges', asy
   fireEvent.click(screen.getByRole('button', { name: '顶部时间窗 近7天' }));
   expect(screen.getByLabelText('顶部时间窗开始')).toHaveValue('2026-06-29');
   expect(screen.getByLabelText('顶部时间窗结束')).toHaveValue('2026-07-05');
+  expect(await screen.findByRole('button', { name: /时间窗服务路径 1 锁定范围 7 天窗口 应用时间窗/ })).toBeInTheDocument();
 
   fireEvent.change(screen.getByPlaceholderText('搜索 VIN / 车牌 / 手机号'), { target: { value: '粤A快捷窗' } });
   fireEvent.click(screen.getByRole('button', { name: '查询车辆' }));