Car Air Freshener Refill Long Lasting Purification Car Perfume Diffuser For 5 Series G30 G31 2016 to 2023 Type 5 Item Type: Car Air Freshener RefillMaterial: PlasticFitment:For  G chassis: For X1 U11 U12 2022+ For X3 G01 2017-2023 For X3 G08 2020-2023 For X4 G02 2018-2023 For X5 G05 G18 2018-2023 For X6 G06 2019-2023 For X7 G07 2019-2023 For 5 Series G30 G31 2016-2023 For 5 Series G60 G68 2023+ For 6 Series G32 217-2023 For 7 Series G11 G12 2015-2022 For 7 Series G70 2022+ (Models need to come with the original fragrance system for this to work!)About car fragrance answer: Normal use of only 1 to 3 months of use, the fragrance will be prompted to run out, the shelf life of the fragrance is only 1 year. The actual each time you remove the fragrance close to smell, there is still a very strong smell, then why can not work it, in fact, is because the car system in the slow volatility of the chip data, after a period of time, the frequency of using the car, slowly the chip data from FF FF-AA-A0 (decimal system of 65, 535) down to 00, when it reaches zero, the machine will think that the fragrance box has been used up, the car machine will also be display is empty. When the chip data is all displayed as 00, the scent system will naturally stop working