diff --git a/car.capnp b/car.capnp
index 07258fd..562c209 100644
--- a/car.capnp
+++ b/car.capnp
@@ -628,6 +628,7 @@ struct CarParams {
     engine @4;
     unknown @5;
     transmission @8; # Transmission Control Module
+    hybrid @18; # hybrid control unit, e.g. Chrysler's HCP, Honda's IMA Control Unit, Toyota's hybrid control computer
     srs @9; # airbag
     gateway @10; # can gateway
     hud @11; # heads up display
@@ -648,9 +649,6 @@ struct CarParams {
     vsa @13; # Vehicle Stability Assist
     programmedFuelInjection @14;
 
-    # Chrysler only
-    hcp @18;  # Hybrid Control Processor
-
     debug @17;
   }