diff --git a/car.capnp b/car.capnp
index ed8be1844..367dbd0b2 100644
--- a/car.capnp
+++ b/car.capnp
@@ -629,6 +629,9 @@ struct CarParams {
     # Chrysler only
     hcp @18;  # Hybrid Control Processor
 
+    # Hyundai only
+    vcu @19;  # Vehicle (Motor) Control Unit
+
     debug @17;
   }