Provide VIN registration service, need to provide VIN information to me. for example VF33ARHXXXXXXXXXX You can find it by following: Driver's license Front of the car Car insurance You must confirm the first 2 points: 1, now the car cd player is the model is RD4. 2, driving computer screen does not display air conditioning information. If you don't understand, please use the station letter to contact the store. If your car supports the direction of the lever, then replace the RD45 can always be used after.