3/4 Button Smart Remote Car Key with PCF7945 ID49 Chip 315/433/868MHz For BMW CAS4 FEM BDC F30 F10 F15 F48 HU92 Uncut Blade

3/4 Button Smart Remote Car Key with PCF7945 ID49 Chip 315/433/868MHz For BMW CAS4 FEM BDC F30 F10 F15 F48 HU92 Uncut Blade🔑 Core selling pointsComplete Blade Smart Key (non empty shell): Pre installed with PCF7945 (P) encryption chip (Hitag Pro protocol/ID49), remote control motherboard, and CR2450 battery. The customer received a complete electronic key with a blade, without the need to remove any parts from the old key.⚠️ Blade type, non thick/large card: This product is a thin Blade Key smart key, with a slim and sharp appearance, and a metal frame. It is not applicable to the old round thick card (Mantou card), straight key or CAS series old smart card.Dual versions available: 3-key version/4-point versionThree frequency options: Select the corresponding frequency according to the sales region of the vehicle. Choosing the wrong frequency will result in complete failure of the remote control function: 315MHz/433MHz/868MHzPCF7945 chip (Hitag Pro/ID49): Built in NXP PCF7945 (P) chip, protocol Hitag Pro (AES), commonly referred to as ID49 encryption chip in the locksmith industry, completely different from the ID46 (PCF7936) of the old E-series CAS system.High quality spare parts: wear-resistant ABS+PA shell, silicone buttons with a crisp feel, embossed diamond pattern on the back, making it a cost-effective solution for replacing worn shells, remote control failure, or adding spare keys.📐 Technical SpecificationsChip type: PCF7945P - Hitag Pro protocol (ID49 encryption)Anti theft system: CAS4/CAS4+/FEM/BDC systemFrequency: 315MHz/433MHz/868MHzNumber of keys: 3 or 4Battery: CR2450 (pre installed, replaceable)Mechanical key blank: HU92 four track (unopened)FCC ID reference: YG0HUF5767/KR55WK49863 and compatible modelsElectronic motherboard: ✅ Pre installed complete circuit board and anti-theft chip🚗 Applicable vehicle models1 Series F20, F21 FEM2-Series F22, F23, F45, F46 FEM3 Series F30, F31, F34, F35, F80 M3 FEM4 Series F32, F33, F36, F82 M4 FEM5 Series F10, F11, F07 CAS47 Series F01, F02, F03, F04 CAS4X1 F48, F49 BDCX2 F39 BDCX3 F25 (later stage), G01 CAS4/BDCX4 F26 (later stage), G02 CAS4/BDCX5 F15, F85, G05 BDCX6 F16, F86, G06 BDC⚠️ Not applicable: Not applicable to the old E-series CAS1/2/3 straight keys, oval smart cards, or plug-in card keys, nor to thick/large card smart keys. Some models of the G series (after G01) use the new blade key. Please check the original key shape before placing an order.⚠️ Must read before purchasingProfessional matching is required: When the key is issued, it is in a blank chip state and cannot be driven directly. We need to find a professional locksmith with BMW diagnostic equipment to program and generate dealer keys using tools such as VVDI2, Autohex, Yanhua Mini ACDP, Autel IM508/IM608, and synchronize remote control functions. CAS4 models can be directly matched through OBD, while FEM/BDC systems usually require disassembling modules to read EEPROM data and write new keys. The same applies to the case of complete loss, but the operation is more complex. Please confirm in advance that the locksmith has the relevant abilities.The frequency must be selected correctly: 315MHz, 433MHz, and 868MHz are incompatible with each other. If the frequency is selected incorrectly, even if the chip is successfully matched, the remote control cannot work. Please open the original key to check the frequency marked on the remote control board or have a locksmith check before placing an order.Mechanical key requires tooth opening: The provided HU92 key blank needs to be cut by the key maker according to the original mechanical tooth code before emergency use of the mechanical door opening.Number of keys selection: Please check the number of keys on the original key and select the corresponding 3 or 4 key version. If the number of keys does not match, it will not function properly.Check FCC ID and appearance: For returns caused by mismatched vehicle models, incorrect frequency selection, or inability to complete matching, the shipping cost will be borne by the buyer. Please carefully check the original key information before purchasing.📦 Packing List1 x Complete Intelligent Remote Control Key