diff --git a/opendbc_repo/opendbc/car/hyundai/interface.py b/opendbc_repo/opendbc/car/hyundai/interface.py
index 10849236c..c20afb972 100644
--- a/opendbc_repo/opendbc/car/hyundai/interface.py
+++ b/opendbc_repo/opendbc/car/hyundai/interface.py
@@ -172,16 +172,12 @@ class CarInterface(CarInterfaceBase):
     # Common longitudinal control setup
 
     radar_config = get_radar_track_config(ret.carFingerprint)
-    radar_tracks_available = radar_config is not None and radar_config.start_addr in fingerprint[1]
+    radar_tracks_available = radar_config is not None and radar_config.start_addr in fingerprint[radar_config.bus]
     ret.radarUnavailable = not radar_tracks_available
     if ret.flags & HyundaiFlags.NON_SCC:
       ret.alphaLongitudinalAvailable = False
     ret.openpilotLongitudinalControl = alpha_long and ret.alphaLongitudinalAvailable
-    # Keep Ioniq 6 radar tracks probe-only until a harness path can provide them reliably.
-    if candidate == CAR.HYUNDAI_IONIQ_6:
-      ret.radarUnavailable = True
-    # When longitudinal is enabled, we disable the ADAS ECU which stops radar messages.
-    elif ret.openpilotLongitudinalControl:
+    if ret.openpilotLongitudinalControl and not (candidate == CAR.HYUNDAI_IONIQ_6 and radar_tracks_available):
       ret.radarUnavailable = True
     ret.pcmCruise = not ret.openpilotLongitudinalControl
     apply_platform_longitudinal_params(ret)
diff --git a/opendbc_repo/opendbc/car/hyundai/radar_interface.py b/opendbc_repo/opendbc/car/hyundai/radar_interface.py
index 4996e7f59..bb50a7439 100644
--- a/opendbc_repo/opendbc/car/hyundai/radar_interface.py
+++ b/opendbc_repo/opendbc/car/hyundai/radar_interface.py
@@ -21,12 +21,13 @@ class RadarTrackConfig:
   start_addr: int
   msg_count: int
   radar_type: str
+  bus: int = 1
 
 
 RADAR_TRACK_CONFIGS = {
   HYUNDAI_MANDO_FRONT_RADAR_DBC: RadarTrackConfig(RADAR_START_ADDR, RADAR_MSG_COUNT, "mando"),
   HYUNDAI_MRR30_RADAR_DBC: RadarTrackConfig(MRR30_RADAR_START_ADDR, MRR30_RADAR_MSG_COUNT, "mrr30"),
-  HYUNDAI_MRR35_RADAR_DBC: RadarTrackConfig(MRR35_RADAR_START_ADDR, MRR35_RADAR_MSG_COUNT, "mrr35"),
+  HYUNDAI_MRR35_RADAR_DBC: RadarTrackConfig(MRR35_RADAR_START_ADDR, MRR35_RADAR_MSG_COUNT, "mrr35", bus=0),
 }
 
 # POC for parsing corner radars: https://github.com/commaai/openpilot/pull/24221/
@@ -42,7 +43,7 @@ def get_radar_can_parser(CP, radar_config):
     return None
 
   messages = [(f"RADAR_TRACK_{addr:x}", 50) for addr in range(radar_config.start_addr, radar_config.start_addr + radar_config.msg_count)]
-  return CANParser(DBC[CP.carFingerprint][Bus.radar], messages, 1)
+  return CANParser(DBC[CP.carFingerprint][Bus.radar], messages, radar_config.bus)
 
 
 class RadarInterface(RadarInterfaceBase):