diff --git a/core/LocAdapterBase.cpp b/core/LocAdapterBase.cpp
index a65cb310..eea8eddf 100644
--- a/core/LocAdapterBase.cpp
+++ b/core/LocAdapterBase.cpp
@@ -128,4 +128,8 @@ DEFAULT_IMPL(false)
 bool LocAdapterBase::
     requestNiNotify(GpsNiNotification &notify, const void* data)
 DEFAULT_IMPL(false)
+
+void LocAdapterBase::
+    shutdown()
+DEFAULT_IMPL()
 } // namespace loc_core
diff --git a/core/LocAdapterBase.h b/core/LocAdapterBase.h
index 4e6ff24b..02b09877 100644
--- a/core/LocAdapterBase.h
+++ b/core/LocAdapterBase.h
@@ -100,6 +100,7 @@ public:
     virtual bool requestNiNotify(GpsNiNotification &notify,
                                  const void* data);
     inline virtual bool isInSession() { return false; }
+    virtual void shutdown();
 };
 
 } // namespace loc_core
diff --git a/loc_api/libloc_api_50001/LocEngAdapter.cpp b/loc_api/libloc_api_50001/LocEngAdapter.cpp
index 44000816..db9f26c2 100644
--- a/loc_api/libloc_api_50001/LocEngAdapter.cpp
+++ b/loc_api/libloc_api_50001/LocEngAdapter.cpp
@@ -53,6 +53,10 @@ void LocInternalAdapter::getZppInt() {
     sendMsg(new LocEngGetZpp(mLocEngAdapter));
 }
 
+void LocInternalAdapter::shutdown() {
+    sendMsg(new LocEngShutdown(mLocEngAdapter));
+}
+
 LocEngAdapter::LocEngAdapter(LOC_API_ADAPTER_EVENT_MASK_T mask,
                              void* owner, ContextBase* context,
                              MsgTask::tCreate tCreator) :
diff --git a/loc_api/libloc_api_50001/LocEngAdapter.h b/loc_api/libloc_api_50001/LocEngAdapter.h
index 2c6e22d5..10b81fb1 100644
--- a/loc_api/libloc_api_50001/LocEngAdapter.h
+++ b/loc_api/libloc_api_50001/LocEngAdapter.h
@@ -64,6 +64,7 @@ public:
     virtual void stopFixInt();
     virtual void getZppInt();
     virtual void setUlpProxy(UlpProxyBase* ulp);
+    virtual void shutdown();
 };
 
 typedef void (*loc_msg_sender)(void* loc_eng_data_p, void* msgp);
diff --git a/loc_api/libloc_api_50001/loc.cpp b/loc_api/libloc_api_50001/loc.cpp
index 8c5ce033..9c447cde 100644
--- a/loc_api/libloc_api_50001/loc.cpp
+++ b/loc_api/libloc_api_50001/loc.cpp
@@ -74,7 +74,7 @@ static int  loc_set_position_mode(GpsPositionMode mode, GpsPositionRecurrence re
                                   uint32_t min_interval, uint32_t preferred_accuracy,
                                   uint32_t preferred_time);
 static const void* loc_get_extension(const char* name);
-
+static void loc_close_mdm_node();
 // Defines the GpsInterface in gps.h
 static const GpsInterface sLocEngInterface =
 {
@@ -279,7 +279,8 @@ static int loc_init(GpsCallbacks* callbacks)
                                     callbacks->create_thread_cb, /* create_thread_cb */
                                     NULL, /* location_ext_parser */
                                     NULL, /* sv_ext_parser */
-                                    callbacks->request_utc_time_cb /* request_utc_time_cb */};
+                                    callbacks->request_utc_time_cb, /* request_utc_time_cb */
+                                    loc_close_mdm_node  /*loc_shutdown_cb*/};
 
     gps_loc_cb = callbacks->location_cb;
     gps_sv_cb = callbacks->sv_status_cb;
@@ -333,6 +334,37 @@ err:
     return retVal;
 }
 
+/*===========================================================================
+FUNCTION    loc_close_mdm_node
+
+DESCRIPTION
+   closes mdm_fd which is the modem powerup node obtained in loc_init
+
+DEPENDENCIES
+   None
+
+RETURN VALUE
+   None
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+static void loc_close_mdm_node()
+{
+    ENTRY_LOG();
+    if (mdm_fd >= 0) {
+        LOC_LOGD("closing the powerup node");
+        close(mdm_fd);
+        mdm_fd = -1;
+        LOC_LOGD("finished closing the powerup node");
+    } else {
+        LOC_LOGD("powerup node has not been opened yet.");
+    }
+
+    EXIT_LOG(%s, VOID_RET);
+}
+
 /*===========================================================================
 FUNCTION    loc_cleanup
 
@@ -356,18 +388,10 @@ static void loc_cleanup()
     loc_afw_data.adapter->setPowerVote(false);
 
     loc_eng_cleanup(loc_afw_data);
+    loc_close_mdm_node();
     gps_loc_cb = NULL;
     gps_sv_cb = NULL;
 
-    if (mdm_fd >= 0) {
-        LOC_LOGD("closing the powerup node");
-        close(mdm_fd);
-        mdm_fd = -1;
-        LOC_LOGD("finished closing the powerup node");
-    } else {
-        LOC_LOGD("powerup node has not been opened yet.");
-    }
-
     EXIT_LOG(%s, VOID_RET);
 }
 
diff --git a/loc_api/libloc_api_50001/loc.h b/loc_api/libloc_api_50001/loc.h
index c9593235..7e268273 100644
--- a/loc_api/libloc_api_50001/loc.h
+++ b/loc_api/libloc_api_50001/loc.h
@@ -42,6 +42,7 @@ extern "C" {
 typedef void (*loc_location_cb_ext) (UlpLocation* location, void* locExt);
 typedef void (*loc_sv_status_cb_ext) (GpsSvStatus* sv_status, void* svExt);
 typedef void* (*loc_ext_parser)(void* data);
+typedef void (*loc_shutdown_cb) (void);
 
 typedef struct {
     loc_location_cb_ext location_cb;
@@ -55,6 +56,7 @@ typedef struct {
     loc_ext_parser location_ext_parser;
     loc_ext_parser sv_ext_parser;
     gps_request_utc_time request_utc_time_cb;
+    loc_shutdown_cb shutdown_cb;
 } LocCallbacks;
 
 #ifdef __cplusplus
diff --git a/loc_api/libloc_api_50001/loc_eng.cpp b/loc_api/libloc_api_50001/loc_eng.cpp
index cb3c4961..bddb30db 100644
--- a/loc_api/libloc_api_50001/loc_eng.cpp
+++ b/loc_api/libloc_api_50001/loc_eng.cpp
@@ -187,7 +187,7 @@ static void loc_eng_handle_engine_up(loc_eng_data_s_type &loc_eng_data) ;
 static int loc_eng_start_handler(loc_eng_data_s_type &loc_eng_data);
 static int loc_eng_stop_handler(loc_eng_data_s_type &loc_eng_data);
 static int loc_eng_get_zpp_handler(loc_eng_data_s_type &loc_eng_data);
-
+static void loc_eng_handle_shutdown(loc_eng_data_s_type &loc_eng_data);
 static void deleteAidingData(loc_eng_data_s_type &logEng);
 static AgpsStateMachine*
 getAgpsStateMachine(loc_eng_data_s_type& logEng, AGpsExtType agpsType);
@@ -327,6 +327,27 @@ void LocEngGetZpp::send() const {
     mAdapter->sendMsg(this);
 }
 
+
+LocEngShutdown::LocEngShutdown(LocEngAdapter* adapter) :
+    LocMsg(), mAdapter(adapter)
+{
+    locallog();
+}
+inline void LocEngShutdown::proc() const
+{
+    loc_eng_data_s_type* locEng = (loc_eng_data_s_type*)mAdapter->getOwner();
+    LOC_LOGD("%s:%d]: Calling loc_eng_handle_shutdown", __func__, __LINE__);
+    loc_eng_handle_shutdown(*locEng);
+}
+inline void LocEngShutdown::locallog() const
+{
+    LOC_LOGV("LocEngShutdown");
+}
+inline void LocEngShutdown::log() const
+{
+    locallog();
+}
+
 //        case LOC_ENG_MSG_SET_TIME:
 struct LocEngSetTime : public LocMsg {
     LocEngAdapter* mAdapter;
@@ -1521,7 +1542,7 @@ int loc_eng_init(loc_eng_data_s_type &loc_eng_data, LocCallbacks* callbacks,
     loc_eng_data.sv_ext_parser = callbacks->sv_ext_parser ?
         callbacks->sv_ext_parser : noProc;
     loc_eng_data.intermediateFix = gps_conf.INTERMEDIATE_POS;
-
+    loc_eng_data.shutdown_cb = callbacks->shutdown_cb;
     // initial states taken care of by the memset above
     // loc_eng_data.engine_status -- GPS_STATUS_NONE;
     // loc_eng_data.fix_session_status -- GPS_STATUS_NONE;
@@ -2606,3 +2627,27 @@ int loc_eng_read_config(void)
     EXIT_LOG(%d, 0);
     return 0;
 }
+
+/*===========================================================================
+FUNCTION    loc_eng_handle_shutdown
+
+DESCRIPTION
+   Calls the shutdown callback function in the loc interface to close
+   the modem node
+
+DEPENDENCIES
+   None
+
+RETURN VALUE
+   0: success
+
+SIDE EFFECTS
+   N/A
+
+===========================================================================*/
+void loc_eng_handle_shutdown(loc_eng_data_s_type &locEng)
+{
+    ENTRY_LOG();
+    locEng.shutdown_cb();
+    EXIT_LOG(%d, 0);
+}
diff --git a/loc_api/libloc_api_50001/loc_eng.h b/loc_api/libloc_api_50001/loc_eng.h
index e50e4a58..3c5d5a7d 100644
--- a/loc_api/libloc_api_50001/loc_eng.h
+++ b/loc_api/libloc_api_50001/loc_eng.h
@@ -133,6 +133,7 @@ typedef struct loc_eng_data_s
 
     loc_ext_parser location_ext_parser;
     loc_ext_parser sv_ext_parser;
+    loc_shutdown_cb shutdown_cb;
 } loc_eng_data_s_type;
 
 /* GPS.conf support */
diff --git a/loc_api/libloc_api_50001/loc_eng_msg.h b/loc_api/libloc_api_50001/loc_eng_msg.h
index ae962f55..b767dc5f 100644
--- a/loc_api/libloc_api_50001/loc_eng_msg.h
+++ b/loc_api/libloc_api_50001/loc_eng_msg.h
@@ -289,6 +289,13 @@ struct LocEngGetZpp : public LocMsg {
     void send() const;
 };
 
+struct LocEngShutdown : public LocMsg {
+    LocEngAdapter* mAdapter;
+    LocEngShutdown(LocEngAdapter* adapter);
+    virtual void proc() const;
+    void locallog() const;
+    virtual void log() const;
+};
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */