diff --git a/selfdrive/car/hyundai/carstate.py b/selfdrive/car/hyundai/carstate.py
index 2822656379..0aa5b06cc9 100644
--- a/selfdrive/car/hyundai/carstate.py
+++ b/selfdrive/car/hyundai/carstate.py
@@ -232,9 +232,9 @@ class CarState(CarStateBase):
     if self.CP.flags & HyundaiFlags.CANFD_HDA2 and self.CP.flags & HyundaiFlags.CANFD_HDA2_ALT_STEERING:
       self.cam_0x230 = copy.copy(cp_cam.vl["CAM_0x230"])
       for i in range(0x235, 0x248 + 1):
-        setattr(self, f"cam_0x{i:03X}", copy.copy(cp_cam.vl[f"CAM_0x{i:03X}"]))
+        setattr(self, f"cam_0x{i:03x}", copy.copy(cp_cam.vl[f"CAM_0x{i:03x}"]))
       for i in range(0x360, 0x366 + 1):
-        setattr(self, f"cam_0x{i:03X}", copy.copy(cp_cam.vl[f"CAM_0x{i:03X}"]))
+        setattr(self, f"cam_0x{i:03x}", copy.copy(cp_cam.vl[f"CAM_0x{i:03x}"]))
 
     return ret
 
@@ -341,9 +341,9 @@ class CarState(CarStateBase):
     elif CP.flags & HyundaiFlags.CANFD_HDA2 and CP.flags & HyundaiFlags.CANFD_HDA2_ALT_STEERING:
       messages += [("CAM_0x230", 33)]
       for i in range(0x235, 0x248 + 1):
-        messages.append((f"CAM_0x{i:03X}", 33))
+        messages.append((f"CAM_0x{i:03x}", 33))
       for i in range(0x360, 0x366 + 1):
-        messages.append((f"CAM_0x{i:03X}", 20))
+        messages.append((f"CAM_0x{i:03x}", 20))
     elif CP.flags & HyundaiFlags.CANFD_CAMERA_SCC:
       messages += [
         ("SCC_CONTROL", 50),
diff --git a/selfdrive/car/hyundai/hyundaicanfd.py b/selfdrive/car/hyundai/hyundaicanfd.py
index 8bc8c5f239..12c2bdfb49 100644
--- a/selfdrive/car/hyundai/hyundaicanfd.py
+++ b/selfdrive/car/hyundai/hyundaicanfd.py
@@ -74,12 +74,12 @@ def create_block_lfa(packer, CAN, CS):
   ret.append(packer.make_can_msg("CAM_0x230", CAN.ACAN, cam_0x230_values))
 
   for i in range(0x235, 0x248 + 1):
-    cam_1_values = {s: CS[f"cam_0x{i:03X}"][s] for s in ["COUNTER"]}
-    ret.append(packer.make_can_msg(f"CAM_0x{i:03X}", CAN.ACAN, cam_1_values))
+    cam_1_values = {s: CS[f"cam_0x{i:03x}"][s] for s in ["COUNTER"]}
+    ret.append(packer.make_can_msg(f"CAM_0x{i:03x}", CAN.ACAN, cam_1_values))
 
   for i in range(0x360, 0x366 + 1):
-    cam_2_values = {s: CS[f"cam_0x{i:03X}"][s] for s in ["COUNTER"]}
-    ret.append(packer.make_can_msg(f"CAM_0x{i:03X}", CAN.ACAN, cam_2_values))
+    cam_2_values = {s: CS[f"cam_0x{i:03x}"][s] for s in ["COUNTER"]}
+    ret.append(packer.make_can_msg(f"CAM_0x{i:03x}", CAN.ACAN, cam_2_values))
 
   return ret