diff --git a/cros/update_attempter.cc b/cros/update_attempter.cc
index e9098de..e417457 100644
--- a/cros/update_attempter.cc
+++ b/cros/update_attempter.cc
@@ -134,6 +134,10 @@
       is_install_(false) {}
 
 UpdateAttempter::~UpdateAttempter() {
+  // Prevent any DBus communication from UpdateAttempter when shutting down the
+  // daemon.
+  ClearObservers();
+
   // CertificateChecker might not be initialized in unittests.
   if (cert_checker_)
     cert_checker_->SetObserver(nullptr);
@@ -177,6 +181,33 @@
   return true;
 }
 
+bool UpdateAttempter::StartUpdater() {
+  // Initiate update checks.
+  ScheduleUpdates();
+
+  auto update_boot_flags_action =
+      std::make_unique<UpdateBootFlagsAction>(system_state_->boot_control());
+  processor_->EnqueueAction(std::move(update_boot_flags_action));
+  // Update boot flags after 45 seconds.
+  MessageLoop::current()->PostDelayedTask(
+      FROM_HERE,
+      base::Bind(&ActionProcessor::StartProcessing,
+                 base::Unretained(processor_.get())),
+      base::TimeDelta::FromSeconds(45));
+
+  // Broadcast the update engine status on startup to ensure consistent system
+  // state on crashes.
+  MessageLoop::current()->PostTask(
+      FROM_HERE,
+      base::Bind(&UpdateAttempter::BroadcastStatus, base::Unretained(this)));
+
+  MessageLoop::current()->PostTask(
+      FROM_HERE,
+      base::Bind(&UpdateAttempter::UpdateEngineStarted,
+                 base::Unretained(this)));
+  return true;
+}
+
 void UpdateAttempter::CertificateChecked(ServerToCheck server_to_check,
                                          CertificateCheckResult result) {
   system_state_->metrics_reporter()->ReportCertificateCheckMetrics(