diff --git a/system/system_error_monitor/launch/system_error_monitor.launch.xml b/system/system_error_monitor/launch/system_error_monitor.launch.xml
index 9eb805b0eb2a6..dd0e47a4b43f2 100644
--- a/system/system_error_monitor/launch/system_error_monitor.launch.xml
+++ b/system/system_error_monitor/launch/system_error_monitor.launch.xml
@@ -2,7 +2,7 @@
   <arg name="config_file" default="$(find-pkg-share system_error_monitor)/config/system_error_monitor.param.yaml"/>
   <arg name="ignore_missing_diagnostics" default="false"/>
   <arg name="add_leaf_diagnostics" default="true"/>
-  <arg name="data_ready_timeout" default="30.0"/>
+  <arg name="data_ready_timeout" default="300.0"/>
   <arg name="data_heartbeat_timeout" default="1.0"/>
   <arg name="diag_timeout_sec" default="1.0"/>
   <arg name="hazard_recovery_timeout" default="5.0"/>