diff --git a/selfdrive/debug/disable_ecu.py b/selfdrive/debug/disable_ecu.py
new file mode 100644
index 0000000000..9dace9a685
--- /dev/null
+++ b/selfdrive/debug/disable_ecu.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+import traceback
+
+import cereal.messaging as messaging
+from selfdrive.car.isotp_parallel_query import IsoTpParallelQuery
+from selfdrive.swaglog import cloudlog
+
+EXT_DIAG_REQUEST = b'\x10\x03'
+EXT_DIAG_RESPONSE = b'\x50\x03'
+COM_CONT_REQUEST = b'\x28\x83\x03'
+COM_CONT_RESPONSE = b''
+
+def disable_ecu(ecu_addr, logcan, sendcan, bus, timeout=0.1, retry=5, debug=False):
+  print(f"ecu disable {hex(ecu_addr)} ...")
+  for i in range(retry):
+    try:
+      # enter extended diagnostic session
+      query = IsoTpParallelQuery(sendcan, logcan, bus, [ecu_addr], [EXT_DIAG_REQUEST], [EXT_DIAG_RESPONSE], debug=debug)
+      for addr, dat in query.get_data(timeout).items(): # pylint: disable=unused-variable
+        print("ecu communication control disable tx/rx ...")
+        # communication control disable tx and rx
+        query = IsoTpParallelQuery(sendcan, logcan, bus, [ecu_addr], [COM_CONT_REQUEST], [COM_CONT_RESPONSE], debug=debug)
+        query.get_data(0)
+        return True
+      print(f"ecu disable retry ({i+1}) ...")
+    except Exception:
+      cloudlog.warning(f"ecu disable exception: {traceback.format_exc()}")
+
+  return False
+
+
+if __name__ == "__main__":
+  import time
+  sendcan = messaging.pub_sock('sendcan')
+  logcan = messaging.sub_sock('can')
+  time.sleep(1)
+
+  # honda bosch radar disable
+  disabled = disable_ecu(0x18DAB0F1, logcan, sendcan, 1, debug=False)
+  print(f"disabled: {disabled}")