diff --git a/bundles/org.openhab.binding.mercedesme/src/main/java/org/openhab/binding/mercedesme/internal/handler/AccountHandler.java b/bundles/org.openhab.binding.mercedesme/src/main/java/org/openhab/binding/mercedesme/internal/handler/AccountHandler.java
index ab2d583ad0cb1..b5d6e8646d8b9 100644
--- a/bundles/org.openhab.binding.mercedesme/src/main/java/org/openhab/binding/mercedesme/internal/handler/AccountHandler.java
+++ b/bundles/org.openhab.binding.mercedesme/src/main/java/org/openhab/binding/mercedesme/internal/handler/AccountHandler.java
@@ -271,6 +271,7 @@ public ClientUpgradeRequest getClientUpgradeRequest() {
     public void registerVin(String vin, VehicleHandler handler) {
         discoveryService.vehicleRemove(this, vin, handler.getThing().getThingTypeUID().getId());
         activeVehicleHandlerMap.put(vin, handler);
+        discovery(vin); // update properties for added vehicle
         VEPUpdate updateForVin = vepUpdateMap.get(vin);
         if (updateForVin != null) {
             handler.enqueueUpdate(updateForVin);
@@ -340,7 +341,6 @@ private void handleMessage(byte[] array) {
             PushMessage pm = VehicleEvents.PushMessage.parseFrom(array);
             if (pm.hasVepUpdates()) {
                 boolean distributed = distributeVepUpdates(pm.getVepUpdates().getUpdatesMap());
-                logger.trace("Distributed VEPUpdate {}", distributed);
                 if (distributed) {
                     AcknowledgeVEPUpdatesByVIN ack = AcknowledgeVEPUpdatesByVIN.newBuilder()
                             .setSequenceNumber(pm.getVepUpdates().getSequenceNumber()).build();
@@ -349,7 +349,7 @@ private void handleMessage(byte[] array) {
                 }
             } else if (pm.hasAssignedVehicles()) {
                 for (int i = 0; i < pm.getAssignedVehicles().getVinsCount(); i++) {
-                    String vin = pm.getAssignedVehicles().getVins(0);
+                    String vin = pm.getAssignedVehicles().getVins(i);
                     discovery(vin);
                 }
                 AcknowledgeAssignedVehicles ack = AcknowledgeAssignedVehicles.newBuilder().build();
@@ -394,6 +394,7 @@ public boolean distributeVepUpdates(Map<String, VEPUpdate> map) {
             }
         });
         notFoundList.forEach(vin -> {
+            discovery(vin); // add vehicle to discovery
             logger.trace("No VehicleHandler available for VIN {}", vin);
         });
         return notFoundList.isEmpty();
@@ -410,13 +411,18 @@ public void commandStatusUpdate(Map<String, AppTwinCommandStatusUpdatesByPID> up
         });
     }
 
+    /**
+     * Updates properties for existing handlers or delivers discovery result
+     *
+     * @param vin of discovered vehicle
+     */
     @SuppressWarnings("null")
     public void discovery(String vin) {
         if (activeVehicleHandlerMap.containsKey(vin)) {
             VehicleHandler vh = activeVehicleHandlerMap.get(vin);
-            if (vh.getThing().getProperties().isEmpty()) {
-                vh.getThing().setProperties(getStringCapabilities(vin));
-            }
+            Map<String, String> properties = getStringCapabilities(vin);
+            properties.putAll(vh.getThing().getProperties());
+            vh.getThing().setProperties(properties);
         } else {
             if (!capabilitiesMap.containsKey(vin)) {
                 // only report new discovery if capabilities aren't discovered yet