diff --git a/core/loadpoint_api.go b/core/loadpoint_api.go
index 97d67449e..e828215bf 100644
--- a/core/loadpoint_api.go
+++ b/core/loadpoint_api.go
@@ -471,6 +471,9 @@ func (lp *Loadpoint) StartVehicleDetection() {
 	// reset vehicle
 	lp.setActiveVehicle(nil)
 
+	lp.vmu.Lock()
+	defer lp.vmu.Unlock()
+
 	// start auto-detect
 	lp.startVehicleDetection()
 }