diff --git a/packages/modules/vehicles/tronity/api.py b/packages/modules/vehicles/tronity/api.py
index 8696a12a05..c3eb804027 100644
--- a/packages/modules/vehicles/tronity/api.py
+++ b/packages/modules/vehicles/tronity/api.py
@@ -48,7 +48,7 @@ def write_token_mqtt(topic: str, token: str, config: TronityVehicleSocConfigurat
 
 
 def create_session(config: TronityVehicleSocConfiguration, vehicle: int) -> req.Session:
-    session = req.Session()
+    session = req.get_http_session()
     data = {'grant_type': 'app',
             'client_id': str(config.client_id),
             'client_secret': str(config.client_secret)}
diff --git a/packages/modules/vehicles/tronity/api_test.py b/packages/modules/vehicles/tronity/api_test.py
new file mode 100644
index 0000000000..b7beee9874
--- /dev/null
+++ b/packages/modules/vehicles/tronity/api_test.py
@@ -0,0 +1,25 @@
+import time
+
+import jwt
+
+from modules.common import req
+from modules.vehicles.tronity.api import create_session
+from modules.vehicles.tronity.config import TronityVehicleSocConfiguration
+
+
+def test_create_session_uses_session_with_default_timeout():
+    # Ein bereits gueltiger Token vermeidet den Token-Request-Zweig (der wuerde ueber
+    # write_token_mqtt() einen echten Pub()/MQTT-Broker ansprechen).
+    valid_token = jwt.encode({"exp": time.time() + 3600}, "test-secret-key-that-is-at-least-32-bytes-long",
+                             algorithm="HS256")
+    config = TronityVehicleSocConfiguration(
+        vehicle_id="vid", client_id="id", client_secret="secret", access_token=valid_token)
+
+    session = create_session(config, vehicle=1)
+
+    # Regression: create_session nutzte frueher eine rohe requests.Session ohne Timeout -
+    # dadurch konnte ein haengender Tronity-Request den SoC-Abruf dauerhaft blockieren
+    # (https://github.com/openWB/core/discussions/3938). Jedes andere Fahrzeugmodul nutzt
+    # bereits req.get_http_session() (5s Default-Timeout).
+    assert isinstance(session, req.CustomSession)
+    assert session.default_timeout == 5