diff --git a/backend/src/controllers/bestellung.controller.ts b/backend/src/controllers/bestellung.controller.ts
index 4f29646..2c442ca 100644
--- a/backend/src/controllers/bestellung.controller.ts
+++ b/backend/src/controllers/bestellung.controller.ts
@@ -364,7 +364,7 @@ class BestellungController {
       res.status(400).json({ success: false, message: 'Ungültige Bestellungs-ID' });
       return;
     }
-    const { nachricht, faellig_am } = req.body;
+    const { faellig_am } = req.body;
     if (!faellig_am) {
       res.status(400).json({ success: false, message: 'Fälligkeitsdatum ist erforderlich' });
       return;
diff --git a/backend/src/controllers/equipment.controller.ts b/backend/src/controllers/equipment.controller.ts
index a36835e..aa410cf 100644
--- a/backend/src/controllers/equipment.controller.ts
+++ b/backend/src/controllers/equipment.controller.ts
@@ -394,7 +394,8 @@ class EquipmentController {
 
   async getStatusHistory(req: Request, res: Response): Promise<void> {
     try {
-      const history = await equipmentService.getStatusHistory(req.params.id);
+      const { id } = req.params as Record<string, string>;
+      const history = await equipmentService.getStatusHistory(id);
       res.status(200).json({ success: true, data: history });
     } catch (error) {
       logger.error('getStatusHistory error', { error, id: req.params.id });
@@ -403,8 +404,9 @@ class EquipmentController {
   }
 
   async uploadWartungFile(req: Request, res: Response): Promise<void> {
-    const wartungId = parseInt(req.params.wartungId, 10);
-    if (isNaN(wartungId)) {
+    const { wartungId } = req.params as Record<string, string>;
+    const id = parseInt(wartungId, 10);
+    if (isNaN(id)) {
       res.status(400).json({ success: false, message: 'Ungültige Wartungs-ID' });
       return;
     }
@@ -414,7 +416,7 @@ class EquipmentController {
       return;
     }
     try {
-      const result = await equipmentService.updateWartungslogFile(wartungId, file.path);
+      const result = await equipmentService.updateWartungslogFile(id, file.path);
       res.status(200).json({ success: true, data: result });
     } catch (error) {
       logger.error('uploadWartungFile error', { error, wartungId });
diff --git a/backend/src/controllers/vehicle.controller.ts b/backend/src/controllers/vehicle.controller.ts
index de5e95e..ac95730 100644
--- a/backend/src/controllers/vehicle.controller.ts
+++ b/backend/src/controllers/vehicle.controller.ts
@@ -375,7 +375,8 @@ class VehicleController {
 
   async getStatusHistory(req: Request, res: Response): Promise<void> {
     try {
-      const history = await vehicleService.getStatusHistory(req.params.id);
+      const { id } = req.params as Record<string, string>;
+      const history = await vehicleService.getStatusHistory(id);
       res.status(200).json({ success: true, data: history });
     } catch (error) {
       logger.error('getStatusHistory error', { error, id: req.params.id });
@@ -384,8 +385,9 @@ class VehicleController {
   }
 
   async uploadWartungFile(req: Request, res: Response): Promise<void> {
-    const wartungId = parseInt(req.params.wartungId, 10);
-    if (isNaN(wartungId)) {
+    const { wartungId } = req.params as Record<string, string>;
+    const id = parseInt(wartungId, 10);
+    if (isNaN(id)) {
       res.status(400).json({ success: false, message: 'Ungültige Wartungs-ID' });
       return;
     }
@@ -395,7 +397,7 @@ class VehicleController {
       return;
     }
     try {
-      const result = await vehicleService.updateWartungslogFile(wartungId, file.path);
+      const result = await vehicleService.updateWartungslogFile(id, file.path);
       res.status(200).json({ success: true, data: result });
     } catch (error) {
       logger.error('uploadWartungFile error', { error, wartungId });
diff --git a/backend/src/middleware/upload.ts b/backend/src/middleware/upload.ts
index 0c0c6ac..85bf8d3 100644
--- a/backend/src/middleware/upload.ts
+++ b/backend/src/middleware/upload.ts
@@ -79,7 +79,7 @@ const wartungStorage = multer.diskStorage({
 });
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const uploadWartung: any = multer({
+const wartungOptions: any = {
   storage: wartungStorage,
   fileFilter(_req: any, file: any, cb: any) {
     if (ALLOWED_TYPES.includes(file.mimetype)) {
@@ -89,6 +89,9 @@ export const uploadWartung: any = multer({
     }
   },
   limits: { fileSize: 20 * 1024 * 1024 },
-});
+};
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export const uploadWartung: any = multer(wartungOptions);
 
 export { UPLOAD_DIR, THUMBNAIL_DIR, WARTUNG_DIR };
diff --git a/frontend/src/pages/FahrzeugDetail.tsx b/frontend/src/pages/FahrzeugDetail.tsx
index 6752fad..0d280c8 100644
--- a/frontend/src/pages/FahrzeugDetail.tsx
+++ b/frontend/src/pages/FahrzeugDetail.tsx
@@ -558,7 +558,7 @@ const WartungTab: React.FC<WartungTabProps> = ({ fahrzeugId, wartungslog, onAdde
                           const file = e.target.files?.[0];
                           if (!file) return;
                           try {
-                            await vehiclesApi.uploadWartungFile(entry.id, file);
+                            await vehiclesApi.uploadWartungFile(Number(entry.id), file);
                             onAdded();
                           } catch {
                             // silent fail — user can retry
diff --git a/frontend/src/pages/FahrzeugForm.tsx b/frontend/src/pages/FahrzeugForm.tsx
index ee4a86e..f5be9de 100644
--- a/frontend/src/pages/FahrzeugForm.tsx
+++ b/frontend/src/pages/FahrzeugForm.tsx
@@ -5,12 +5,8 @@ import {
   Button,
   CircularProgress,
   Container,
-  FormControl,
   Grid,
-  InputLabel,
-  MenuItem,
   Paper,
-  Select,
   TextField,
   Typography,
 } from '@mui/material';
@@ -19,8 +15,6 @@ import { useNavigate, useParams } from 'react-router-dom';
 import DashboardLayout from '../components/dashboard/DashboardLayout';
 import { vehiclesApi } from '../services/vehicles';
 import {
-  FahrzeugStatus,
-  FahrzeugStatusLabel,
   CreateFahrzeugPayload,
   UpdateFahrzeugPayload,
 } from '../types/vehicle.types';
@@ -33,16 +27,14 @@ interface FormState {
   kurzname:               string;
   amtliches_kennzeichen:  string;
   fahrgestellnummer:      string;
-  baujahr:                string; // kept as string for input, parsed on submit
+  baujahr:                string;
   hersteller:             string;
   typ_schluessel:         string;
   besatzung_soll:         string;
-  status:                 FahrzeugStatus;
-  status_bemerkung:       string;
   standort:               string;
   bild_url:               string;
-  paragraph57a_faellig_am: string; // ISO date 'YYYY-MM-DD' or ''
-  naechste_wartung_am:    string;  // ISO date 'YYYY-MM-DD' or ''
+  paragraph57a_faellig_am: string;
+  naechste_wartung_am:    string;
 }
 
 const EMPTY_FORM: FormState = {
@@ -54,8 +46,6 @@ const EMPTY_FORM: FormState = {
   hersteller:             '',
   typ_schluessel:         '',
   besatzung_soll:         '',
-  status:                 FahrzeugStatus.Einsatzbereit,
-  status_bemerkung:       '',
   standort:               'Feuerwehrhaus',
   bild_url:               '',
   paragraph57a_faellig_am: '',
@@ -102,8 +92,6 @@ function FahrzeugForm() {
         hersteller:             vehicle.hersteller ?? '',
         typ_schluessel:         vehicle.typ_schluessel ?? '',
         besatzung_soll:         vehicle.besatzung_soll ?? '',
-        status:                 vehicle.status,
-        status_bemerkung:       vehicle.status_bemerkung ?? '',
         standort:               vehicle.standort,
         bild_url:               vehicle.bild_url ?? '',
         paragraph57a_faellig_am: toDateInput(vehicle.paragraph57a_faellig_am),