diff --git a/selfdrive/car/hyundai/interface.py b/selfdrive/car/hyundai/interface.py
index de1742f100..26b3491358 100644
--- a/selfdrive/car/hyundai/interface.py
+++ b/selfdrive/car/hyundai/interface.py
@@ -3,8 +3,8 @@ from panda import Panda
 from openpilot.common.conversions import Conversions as CV
 from openpilot.selfdrive.car.hyundai.hyundaicanfd import CanBus
 from openpilot.selfdrive.car.hyundai.values import HyundaiFlags, CAR, DBC, CANFD_CAR, CAMERA_SCC_CAR, CANFD_RADAR_SCC_CAR, \
-                                         EV_CAR, HYBRID_CAR, LEGACY_SAFETY_MODE_CAR, UNSUPPORTED_LONGITUDINAL_CAR, \
-                                         Buttons
+                                         CANFD_UNSUPPORTED_LONGITUDINAL_CAR, EV_CAR, HYBRID_CAR, LEGACY_SAFETY_MODE_CAR, \
+                                         UNSUPPORTED_LONGITUDINAL_CAR, Buttons
 from openpilot.selfdrive.car.hyundai.radar_interface import RADAR_START_ADDR
 from openpilot.selfdrive.car import create_button_events, get_safety_config
 from openpilot.selfdrive.car.interfaces import CarInterfaceBase
@@ -260,7 +260,8 @@ class CarInterface(CarInterfaceBase):
     if candidate in CANFD_CAR:
       ret.longitudinalTuning.kpV = [0.1]
       ret.longitudinalTuning.kiV = [0.0]
-      ret.experimentalLongitudinalAvailable = candidate in (HYBRID_CAR | EV_CAR) and candidate not in CANFD_RADAR_SCC_CAR
+      ret.experimentalLongitudinalAvailable = (candidate in (HYBRID_CAR | EV_CAR) and candidate not in
+                                               (CANFD_UNSUPPORTED_LONGITUDINAL_CAR | CANFD_RADAR_SCC_CAR))
     else:
       ret.longitudinalTuning.kpV = [0.5]
       ret.longitudinalTuning.kiV = [0.0]
diff --git a/selfdrive/car/hyundai/values.py b/selfdrive/car/hyundai/values.py
index 56bbc685f9..209153c4a4 100644
--- a/selfdrive/car/hyundai/values.py
+++ b/selfdrive/car/hyundai/values.py
@@ -2105,7 +2105,11 @@ CANFD_CAR = {CAR.KIA_EV6, CAR.IONIQ_5, CAR.IONIQ_6, CAR.TUCSON_4TH_GEN, CAR.TUCS
 
 # The radar does SCC on these cars when HDA I, rather than the camera
 CANFD_RADAR_SCC_CAR = {CAR.GENESIS_GV70_1ST_GEN, CAR.KIA_SORENTO_PHEV_4TH_GEN, CAR.KIA_SORENTO_4TH_GEN, CAR.GENESIS_GV80,
-                       CAR.KIA_CARNIVAL_4TH_GEN, CAR.KIA_SORENTO_HEV_4TH_GEN, CAR.KONA_EV_2ND_GEN, CAR.IONIQ_6}
+                       CAR.KIA_CARNIVAL_4TH_GEN, CAR.KIA_SORENTO_HEV_4TH_GEN}
+
+# These CAN FD cars do not accept communication control to disable the ADAS ECU,
+# responds with 0x7F2822 - 'conditions not correct'
+CANFD_UNSUPPORTED_LONGITUDINAL_CAR = {CAR.IONIQ_6, CAR.KONA_EV_2ND_GEN}
 
 # The camera does SCC on these cars, rather than the radar
 CAMERA_SCC_CAR = {CAR.KONA_EV_2022, }