diff --git a/openpilot/selfdrive/locationd/calibrationd.py b/openpilot/selfdrive/locationd/calibrationd.py
index babb0981b0..b585f4ffb8 100755
--- a/openpilot/selfdrive/locationd/calibrationd.py
+++ b/openpilot/selfdrive/locationd/calibrationd.py
@@ -270,6 +270,12 @@ def main() -> NoReturn:
   params_reader = Params()
   CP = messaging.log_from_bytes(params_reader.get("CarParams", block=True), car.CarParams)
 
+  last_carparams_data = params_reader.get("CarParamsPrevRoute")
+  if last_carparams_data is not None:
+    with car.CarParams.from_bytes(last_carparams_data) as last_CP:
+      if last_CP.carFingerprint != CP.carFingerprint:
+        params_reader.remove("CalibrationParams")
+
   calibrator = Calibrator(param_put=True)
   calibrator.not_car = CP.notCar