diff --git a/examples/hyundai_ecu_wakeup.py b/examples/hyundai_ecu_wakeup.py
new file mode 100755
index 0000000000..9f4a2865cb
--- /dev/null
+++ b/examples/hyundai_ecu_wakeup.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import time
+
+sys.path.append(os.path.join(os.path.dirname(os.path.realpath(__file__)), ".."))
+from panda import Panda  # noqa: E402
+
+print("[INIT]")
+p = Panda()
+p.set_safety_mode(Panda.SAFETY_ALLOUTPUT, param=1)
+
+print("[SEND WAKEUP]")
+# some ECUs (e.g. BSM radar) quickly go to sleep after powering up
+# these ECUs wake back up if they notice that the ignition is on
+# (sending just one message doesn't work)
+msg_addr = 0x541
+msg_dat = b"\x00\x00\x00\x00\x00\x00\x00\x04"
+msg_bus = 0
+for i in range(10):
+  # CGW1.CF_Gway_Ign1 = 1
+  p.can_send(msg_addr, msg_dat, msg_bus)
+  print(hex(msg_addr), f"0x{msg_dat.hex()}")
+  time.sleep(.1)
+
+print("[DONE]")