diff --git a/src/ATBAPP/ATBDeviceControllerPlugin.cpp b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
index e657ee5..fefd685 100644
--- a/src/ATBAPP/ATBDeviceControllerPlugin.cpp
+++ b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
@@ -1712,6 +1712,7 @@ void ATBDeviceControllerPlugin::onWokeUp(uchar source)
 {
     if (source == 0x01 || source == 0xFE) {
         // woke up from device controller
+        hw->dc_autoRequest(true);
         this->diag->diagRequest();
     }
 }
diff --git a/src/ATBAPP/DeviceControllerDiag.cpp b/src/ATBAPP/DeviceControllerDiag.cpp
index 376d2e6..c79279c 100644
--- a/src/ATBAPP/DeviceControllerDiag.cpp
+++ b/src/ATBAPP/DeviceControllerDiag.cpp
@@ -135,6 +135,7 @@ void DeviceControllerDiag::private_startDiag()
         qCritical() << "DeviceControllerDiag::private_startDiag() DCdata is +++not+++ valid";
 
         // try it again
+        hw->dc_autoRequest(true);
         QTimer::singleShot(200, this, &DeviceControllerDiag::private_startDiag);
     }
 }
@@ -164,6 +165,7 @@ void DeviceControllerDiag::sys_superviseSystem()
     {
         // es gibt keinerlei gültige Daten vom DC
         qCritical() << "DeviceControllerDiag::sys_superviseSystem() no valid data!";
+        hw->dc_autoRequest(true);
         this->private_sendDiagEvent(DeviceController::State::E254);
         this->diagRequestTimeoutTimer->stop();
         this->isRequestRunning  = false;