diff --git a/vehicle-data-platform/apps/web/src/pages/History.tsx b/vehicle-data-platform/apps/web/src/pages/History.tsx
index 5e9c4fd0..ef384393 100644
--- a/vehicle-data-platform/apps/web/src/pages/History.tsx
+++ b/vehicle-data-platform/apps/web/src/pages/History.tsx
@@ -127,7 +127,7 @@ export function History({ initialVin, initialProtocol, onOpenVehicle }: { initia
         title="历史数据"
         description="按车辆查询位置历史和 RAW 帧历史，数据来源只作为过滤和诊断维度"
         actions={(
-          <Button disabled={!currentVehicleKeyword} onClick={() => onOpenVehicle(currentVehicleKeyword, currentProtocol)}>
+          <Button disabled={!currentVehicleKeyword} onClick={() => onOpenVehicle(currentVehicleKeyword)}>
             当前车辆服务
           </Button>
         )}
@@ -191,7 +191,7 @@ export function History({ initialVin, initialProtocol, onOpenVehicle }: { initia
                   title: '操作',
                   width: 110,
                   render: (_: unknown, row: HistoryLocationRow) => (
-                    <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin, row.protocol)}>车辆服务</Button>
+                    <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin)}>车辆服务</Button>
                   )
                 }
               ]}
@@ -225,7 +225,7 @@ export function History({ initialVin, initialProtocol, onOpenVehicle }: { initia
                   render: (_: unknown, row: RawFrameRow) => (
                     <Space>
                       <Button onClick={() => setSelectedRaw(row)}>字段</Button>
-                      <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin, row.protocol)}>车辆服务</Button>
+                      <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin)}>车辆服务</Button>
                     </Space>
                   )
                 }
diff --git a/vehicle-data-platform/apps/web/src/pages/Mileage.tsx b/vehicle-data-platform/apps/web/src/pages/Mileage.tsx
index b8184c22..b6c05a32 100644
--- a/vehicle-data-platform/apps/web/src/pages/Mileage.tsx
+++ b/vehicle-data-platform/apps/web/src/pages/Mileage.tsx
@@ -74,7 +74,7 @@ export function Mileage({ initialVin, initialProtocol, onOpenVehicle }: { initia
         title="里程统计"
         description="按车辆汇总每日里程、区间里程和异常差值分析"
         actions={(
-          <Button disabled={!currentVehicleKeyword} onClick={() => onOpenVehicle(currentVehicleKeyword, currentProtocol)}>
+          <Button disabled={!currentVehicleKeyword} onClick={() => onOpenVehicle(currentVehicleKeyword)}>
             当前车辆服务
           </Button>
         )}
@@ -149,7 +149,7 @@ export function Mileage({ initialVin, initialProtocol, onOpenVehicle }: { initia
               title: '操作',
               width: 110,
               render: (_: unknown, row: DailyMileageRow) => (
-                <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin, row.source)}>车辆服务</Button>
+                <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin)}>车辆服务</Button>
               )
             }
           ]}
diff --git a/vehicle-data-platform/apps/web/src/pages/Realtime.tsx b/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
index 9be67bb4..60cf757a 100644
--- a/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
+++ b/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
@@ -147,7 +147,7 @@ export function Realtime({ onOpenVehicle }: { onOpenVehicle: (vin: string, proto
                     title: '操作',
                     width: 110,
                     render: (_: unknown, row: VehicleRealtimeRow) => (
-                      <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin, row.primaryProtocol)}>车辆服务</Button>
+                      <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin)}>车辆服务</Button>
                     )
                   }
                 ]}
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 27ccca7f..32dd71e0 100644
--- a/vehicle-data-platform/apps/web/src/test/App.test.tsx
+++ b/vehicle-data-platform/apps/web/src/test/App.test.tsx
@@ -1268,7 +1268,7 @@ test('shows vehicle and source scope on mileage hash', async () => {
   expect(screen.getByText('当前来源：GB32960')).toBeInTheDocument();
 });
 
-test('keeps row protocol when opening vehicle service from history results', async () => {
+test('opens unified vehicle service from history results without row protocol', async () => {
   window.history.replaceState(null, '', '/#/history?keyword=%E7%B2%A4AG18312&protocol=JT808');
   vi.spyOn(globalThis, 'fetch').mockImplementation(async (input, init) => {
     const path = String(input);
@@ -1345,11 +1345,11 @@ test('keeps row protocol when opening vehicle service from history results', asy
   fireEvent.click(screen.getAllByRole('button', { name: '车辆服务' })[0]);
 
   await waitFor(() => {
-    expect(window.location.hash).toBe('#/detail?keyword=VIN-JT808-001&protocol=JT808');
+    expect(window.location.hash).toBe('#/detail?keyword=VIN-JT808-001');
   });
 });
 
-test('keeps primary protocol when opening vehicle service from realtime vehicles', async () => {
+test('opens unified vehicle service from realtime vehicles without primary protocol', async () => {
   window.history.replaceState(null, '', '/#/realtime');
   vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
     const path = String(input);
@@ -1420,7 +1420,7 @@ test('keeps primary protocol when opening vehicle service from realtime vehicles
   fireEvent.click(screen.getByRole('button', { name: '车辆服务' }));
 
   await waitFor(() => {
-    expect(window.location.hash).toBe('#/detail?keyword=VIN-MQTT-001&protocol=YUTONG_MQTT');
+    expect(window.location.hash).toBe('#/detail?keyword=VIN-MQTT-001');
   });
 });
 
@@ -1939,7 +1939,7 @@ test('opens source-specific history directly from vehicle detail source card', a
   });
 });
 
-test('opens vehicle service from an empty history query with the current filters', async () => {
+test('opens unified vehicle service from an empty history query', async () => {
   window.history.replaceState(null, '', '/#/history?keyword=VIN404&protocol=JT808');
   vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
     const path = String(input);
@@ -1980,7 +1980,7 @@ test('opens vehicle service from an empty history query with the current filters
   fireEvent.click(await screen.findByRole('button', { name: '当前车辆服务' }));
 
   await waitFor(() => {
-    expect(window.location.hash).toBe('#/detail?keyword=VIN404&protocol=JT808');
+    expect(window.location.hash).toBe('#/detail?keyword=VIN404');
   });
 });