{"product_id":"bmw-car-key-replacement-cas3-semi-intelligent-remote-control-fob-with-315mhz-433mhz-868mhz-frequency-options-metal-copper-and-plastic-construction-three-button-design-suitable-for-vehicle-programming","title":"BMW car key replacement CAS3 semi-intelligent remote control fob with 315MHz 433MHz 868MHz frequency options, metal copper and plastic construction three-button design suitable for vehicle programming","description":"\u003ch1\u003eBMW CAS3 Semi-Intelligent Remote Control Car Key Replacement with 315MHz 433MHz 868MHz Frequency Options\u003c\/h1\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"BMW CAS3 semi-intelligent remote car key with three buttons and metal\/plastic construction\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/248\/2025-10-02\/original-image\/2ec76310-9704-4378-9011-16e12890860e.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThis CAS3 semi-intelligent remote control key serves as a replacement solution for BMW owners needing a spare or replacement key for their vehicle. Designed to match the functionality of original equipment keys, this unit requires professional programming by a qualified BMW technician or automotive locksmith before it will operate your car's central locking, alarm system, and ignition. The key's construction combines metal copper elements with durable plastic casing, creating a solid-feeling remote that matches the weight and handling characteristics of factory BMW keys. With three available frequency options covering most BMW models and regions, this key provides a practical alternative when original keys are lost, damaged, or when an additional spare is required.\u003c\/p\u003e\u003ch2\u003eFeatures and Construction\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"BMW CAS3 semi-intelligent remote car key with three buttons and metal\/plastic construction\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/248\/2025-10-02\/original-image\/318688d3-3669-4517-b27d-d04eea150b18.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThe CAS3 semi-intelligent key incorporates several design elements that make it suitable for BMW vehicle integration. Its construction and electronic specifications have been developed to work with BMW's CAS (Car Access System) immobiliser technology, requiring proper programming to communicate with your vehicle's security systems. The key arrives as a complete unit but needs professional configuration to match your specific vehicle's electronic signature and security codes.\u003c\/p\u003e\u003ch3\u003eMaterial and Build\u003c\/h3\u003e\u003cp\u003eThis replacement key utilises a combination of metal copper components and plastic casing materials. The metal copper elements provide structural reinforcement and weight distribution similar to original BMW keys, while the plastic casing houses the electronic components and buttons. The three-button layout allows operation of central locking functions once programmed, with no additional features mentioned beyond basic remote operation. The semi-intelligent designation indicates the key contains the necessary electronics to work with BMW systems but lacks pre-programmed vehicle-specific data.\u003c\/p\u003e\u003ch3\u003eSize and Practical Fit\u003c\/h3\u003e\u003cp\u003eWhile specific dimensions aren't provided in the source material, the key is designed to match the physical profile of original BMW remote keys. The three-button layout follows standard BMW key designs, with the CAS3 designation indicating compatibility with specific BMW models utilising this key type. The frequency options (315MHz, 433MHz, and 868MHz) cover the transmission ranges used by BMW across different markets and model years, ensuring you can select the correct option for your vehicle's existing key system.\u003c\/p\u003e\u003ch2\u003eUses and Placement\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"BMW CAS3 semi-intelligent remote car key with three buttons and metal\/plastic construction\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/248\/2025-10-02\/original-image\/638ceb2c-fc9c-4923-8fb9-f450a4b00f3b.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThis replacement key serves several practical purposes for BMW owners, from creating additional spares to replacing lost or damaged original keys. Its applications extend beyond simple convenience, providing essential access to vehicles when original keys are unavailable. The key's design focuses on functional replacement rather than enhanced features, making it suitable for straightforward key replacement scenarios.\u003c\/p\u003e\u003ch3\u003eEvent or Professional Use\u003c\/h3\u003e\u003cp\u003eAutomotive locksmiths, BMW dealerships, and vehicle service centres will find this key useful for client key replacement situations. The availability of three frequency options allows professionals to service a wider range of BMW models without maintaining multiple key variants in inventory. The semi-intelligent design means the key contains the necessary electronic components but requires professional programming equipment to marry it to a specific vehicle, maintaining security standards while providing a replacement solution. This makes it suitable for automotive professionals who have access to BMW diagnostic and programming tools.\u003c\/p\u003e\u003ch3\u003eEveryday Home Use\u003c\/h3\u003e\u003cp\u003eFor individual BMW owners, this key provides a cost-effective replacement option compared to dealership-original keys. It serves as a practical spare key that can be programmed to work with your vehicle, offering peace of mind against loss or damage to your primary key. The three frequency options mean you can select the correct transmission range for your specific BMW model and region, ensuring compatibility before purchase. Having a properly programmed spare key can prevent inconvenient and potentially costly situations if your primary key is lost, stolen, or becomes damaged through regular use.\u003c\/p\u003e\u003ch2\u003eBenefits and Buying Value\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"BMW CAS3 semi-intelligent remote car key with three buttons and metal\/plastic construction\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/248\/2025-10-02\/original-image\/c5321ba1-6f5c-4f89-89d5-9c9774c712cf.webp\"\u003e\u003c\/div\u003e\u003cp\u003eChoosing this replacement key offers several practical advantages for BMW owners needing key replacements. The combination of metal and plastic construction, frequency options, and semi-intelligent design creates a balanced solution between cost and functionality. While requiring professional programming, the key provides all necessary components for integration with your BMW's security and access systems.\u003c\/p\u003e\u003ch3\u003eReuse and Low Maintenance\u003c\/h3\u003e\u003cp\u003eOnce programmed to your vehicle, this key functions identically to original equipment, with no additional maintenance requirements beyond battery replacement (when applicable) and standard care. The metal and plastic construction provides durability for daily use, while the electronic components are designed for reliable operation over time. As a spare key, it can be stored securely until needed, then used immediately when required without further configuration beyond the initial programming session.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Product\u003c\/h3\u003e\u003cp\u003eThis CAS3 semi-intelligent key offers a specifically compatible replacement solution for BMW vehicles, with three frequency options covering most models and regions. The metal and plastic construction provides physical durability, while the semi-intelligent design ensures it contains the necessary electronics for BMW system integration. For owners needing replacement keys, it presents a practical alternative to dealership-original keys, requiring only professional programming to become fully functional. The clear frequency specifications allow accurate matching to your vehicle's existing key system, reducing compatibility issues during the programming process.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"BMW CAS3 semi-intelligent remote car key with three buttons and metal\/plastic construction\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/248\/2025-10-02\/original-image\/cc4d978e-bfb9-4f1f-b674-0ea08c3d4d95.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"BMW CAS3 semi-intelligent remote car key with three buttons and metal\/plastic construction\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/248\/2025-10-02\/original-image\/fc96d56b-c57a-4bf0-a59f-ffd5d0d22fca.webp\"\u003e\u003c\/div\u003e","brand":"bygmmn-fb","offers":[{"title":"Semi intelligent \/ 868Mhz","offer_id":57109798355275,"sku":"CJQC170993603CX","price":20.98,"currency_code":"GBP","in_stock":true},{"title":"Semi intelligent \/ 315Mhz","offer_id":57109798388043,"sku":"CJQC170993601AZ","price":20.98,"currency_code":"GBP","in_stock":true},{"title":"Semi intelligent \/ 433Mhz","offer_id":57109798420811,"sku":"CJQC170993602BY","price":20.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1034\/9700\/7435\/files\/2ec76310-9704-4378-9011-16e12890860e.webp?v=1777026416","url":"https:\/\/doverelle.com\/products\/bmw-car-key-replacement-cas3-semi-intelligent-remote-control-fob-with-315mhz-433mhz-868mhz-frequency-options-metal-copper-and-plastic-construction-three-button-design-suitable-for-vehicle-programming","provider":"Doverelle","version":"1.0","type":"link"}