{"product_id":"bmw-cas4-fem-key-huf5663-pcf7953p-hitag-pro-434mhz-hu100r","title":"BMW CAS4 FEM Smart Key HUF5663 – PCF7953P HITAG Pro 434MHz HU100R 2009+","description":"\u003c!-- ===== BMW CAS4\/FEM Compatible Key — Shopify Product Description HTML ===== --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- SEO Optimized | Paste into: Products \u003e Description \u003e HTML view (\u003c\u003e) --\u003e\n\u003cstyle\u003e\n  .bm3-wrap{font-family:inherit;color:inherit;max-width:100%;line-height:1.6}\n  .bm3-badge{display:inline-block;font-size:11px;font-weight:600;padding:3px 10px;border-radius:20px;margin:3px 4px 3px 0}\n  .bm3-badge-blue{background:#DDEEFF;color:#1A5FAD}\n  .bm3-badge-green{background:#E4F5D4;color:#2D6A10}\n  .bm3-badge-amber{background:#FEF0D4;color:#875010}\n  .bm3-badge-purple{background:#EEECFD;color:#4D3DB5}\n  .bm3-badge-red{background:#FDECEA;color:#B71C1C}\n  .bm3-badge-dark{background:#ECEFF1;color:#263238}\n  .bm3-badge-teal{background:#E0F7FA;color:#00695C}\n  .bm3-partno{background:#E3F2FD;border-radius:8px;padding:10px 14px;font-size:13px;color:#1A5FAD;margin-bottom:16px;font-weight:500}\n  .bm3-intro{background:#F4F8FF;border-left:3px solid #3A80D2;padding:12px 16px;border-radius:0 8px 8px 0;font-size:14px;color:#444;margin:16px 0 20px}\n  .bm3-section-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:#888;margin:24px 0 10px}\n  .bm3-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:20px}\n  .bm3-card{background:#F7F8FA;border-radius:10px;padding:14px}\n  .bm3-card-icon{font-size:22px;margin-bottom:8px}\n  .bm3-card-title{font-size:13px;font-weight:600;margin:0 0 4px;color:#1a1a1a}\n  .bm3-card-desc{font-size:12px;color:#666;margin:0;line-height:1.5}\n  .bm3-spec-table{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:20px}\n  .bm3-spec-table tr{border-bottom:1px solid #EBEBEB}\n  .bm3-spec-table tr:nth-child(even){background:#FAFAFA}\n  .bm3-spec-table td{padding:9px 8px;vertical-align:top}\n  .bm3-spec-table td:first-child{color:#666;font-weight:500;width:42%}\n  .bm3-compat-table{width:100%;border-collapse:collapse;font-size:13px;margin-bottom:20px}\n  .bm3-compat-table th{background:#F0F4FF;color:#1A5FAD;padding:8px 10px;text-align:left;font-weight:600;font-size:12px}\n  .bm3-compat-table td{padding:10px;border-bottom:1px solid #EBEBEB;font-size:14px}\n  .bm3-checklist{list-style:none;padding:0;margin:0 0 20px}\n  .bm3-checklist li{font-size:13px;color:#555;padding:6px 0 6px 24px;position:relative;border-bottom:1px solid #F0F0F0}\n  .bm3-checklist li:last-child{border-bottom:none}\n  .bm3-checklist li::before{content:\"✓\";position:absolute;left:0;color:#2D8B4E;font-weight:700}\n  .bm3-warning{background:#FFF8E1;border-left:3px solid #F9A825;border-radius:0 8px 8px 0;padding:12px 16px;font-size:13px;color:#666;margin:16px 0}\n  .bm3-alert{background:#FDECEA;border-left:3px solid #E53935;border-radius:0 8px 8px 0;padding:12px 16px;font-size:13px;color:#B71C1C;margin:16px 0}\n  .bm3-info{background:#E8F5E9;border-left:3px solid #43A047;border-radius:0 8px 8px 0;padding:12px 16px;font-size:13px;color:#444;margin:16px 0}\n  .bm3-chip{background:#E8EAF6;border-left:3px solid #3949AB;border-radius:0 8px 8px 0;padding:12px 16px;font-size:13px;color:#1A237E;margin:16px 0}\n  .bm3-cas{background:#FFF3E0;border-left:3px solid #FB8C00;border-radius:0 8px 8px 0;padding:12px 16px;font-size:13px;color:#E65100;margin:16px 0}\n  .bm3-note{background:#F7F8FA;border-radius:8px;padding:12px 16px;font-size:12px;color:#888;margin-top:16px;line-height:1.6}\n\u003c\/style\u003e\n\u003cdiv class=\"bm3-wrap\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Product\"\u003e\n\u003c!-- SEO Meta --\u003e \u003cmeta itemprop=\"name\" content=\"BMW CAS4 FEM Compatible Key HUF5663 – PCF7953P HITAG Pro 434MHz HU100R 4 Button 2009+\"\u003e \u003cmeta itemprop=\"description\" content=\"Aftermarket BMW CAS4\/FEM smart key HUF5663. PCF7953P HITAG Pro, 434MHz ASK, 4 buttons, HU100R blade. Suits BMW CAS4\/FEM 2009+. Battery not included. HITAG Pro locksmith programming required. NZ stock.\"\u003e \u003c!-- Part No Banner --\u003e\n\u003cdiv class=\"bm3-partno\"\u003e📋 \u003cstrong\u003eRemote:\u003c\/strong\u003e HUF 5663  |  \u003cstrong\u003eChip:\u003c\/strong\u003e PCF7953P HITAG Pro  |  \u003cstrong\u003eSystem:\u003c\/strong\u003e CAS4 \/ FEM  |  \u003cstrong\u003eBlade:\u003c\/strong\u003e HU100R  |  \u003cstrong\u003eFrom:\u003c\/strong\u003e 2009+\u003c\/div\u003e\n\u003c!-- Badges --\u003e\n\u003cdiv\u003e\n\u003cspan class=\"bm3-badge bm3-badge-blue\"\u003ePCF7953P HITAG Pro\u003c\/span\u003e \u003cspan class=\"bm3-badge bm3-badge-green\"\u003e434MHz ASK\u003c\/span\u003e \u003cspan class=\"bm3-badge bm3-badge-amber\"\u003eHU100R Blade\u003c\/span\u003e \u003cspan class=\"bm3-badge bm3-badge-purple\"\u003e4 Buttons\u003c\/span\u003e \u003cspan class=\"bm3-badge bm3-badge-teal\"\u003eCAS4 \/ FEM\u003c\/span\u003e \u003cspan class=\"bm3-badge bm3-badge-dark\"\u003eHUF 5663\u003c\/span\u003e \u003cspan class=\"bm3-badge bm3-badge-red\"\u003eBattery Not Included\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- Intro --\u003e\n\u003cdiv class=\"bm3-intro\"\u003eAftermarket BMW compatible smart key for \u003cstrong\u003eCAS4\/FEM system vehicles (2009+)\u003c\/strong\u003e, featuring a \u003cstrong\u003ePCF7953P HITAG Pro chip\u003c\/strong\u003e, \u003cstrong\u003e434MHz ASK frequency\u003c\/strong\u003e, \u003cstrong\u003e4 buttons\u003c\/strong\u003e and \u003cstrong\u003eHU100R blade\u003c\/strong\u003e. Remote reference: \u003cstrong\u003eHUF 5663\u003c\/strong\u003e. Battery not included. \u003cstrong\u003eHITAG Pro diagnostic programming\u003c\/strong\u003e by a qualified locksmith is required — this is one of BMW's most advanced security systems.\u003c\/div\u003e\n\u003c!-- Battery Alert --\u003e\n\u003cdiv class=\"bm3-alert\"\u003e🔋 \u003cstrong\u003eBattery Not Included:\u003c\/strong\u003e This key does not come with a battery. Please purchase a compatible coin battery separately before use. Battery access requires a tool.\u003c\/div\u003e\n\u003c!-- CAS4\/FEM System Explanation --\u003e\n\u003cdiv class=\"bm3-cas\"\u003e🔍 \u003cstrong\u003eCAS4 \/ FEM System — What This Means:\u003c\/strong\u003e BMW uses different immobiliser systems across generations. \u003cstrong\u003eCAS4 (Car Access System 4)\u003c\/strong\u003e and \u003cstrong\u003eFEM (Front Electronic Module)\u003c\/strong\u003e are BMW's most advanced access systems used in post-2009 models. Confirm your BMW uses \u003cstrong\u003eCAS4 or FEM\u003c\/strong\u003e before purchasing — earlier BMWs use CAS3+ or CAS3, which require a different key. Your locksmith can identify your system via the VIN or diagnostic scan.\u003c\/div\u003e\n\u003c!-- HITAG Pro Chip Info --\u003e\n\u003cdiv class=\"bm3-chip\"\u003e💾 \u003cstrong\u003ePCF7953P HITAG Pro — BMW's Highest Security Chip:\u003c\/strong\u003e This key uses the \u003cstrong\u003ePCF7953P HITAG Pro transponder\u003c\/strong\u003e — BMW's most advanced security chip, featuring full AES encryption. This is significantly more complex to program than earlier BMW chips. Your locksmith must have \u003cstrong\u003especialist BMW CAS4\/FEM diagnostic equipment\u003c\/strong\u003e (such as Autel IM608 Pro, Launch X431, VVDI2, or BMW ISTA-P) that specifically supports HITAG Pro programming. Please confirm compatibility before purchasing.\u003c\/div\u003e\n\u003cdiv class=\"bm3-warning\"\u003e⚠️ \u003cstrong\u003eSpecialist Programming Required:\u003c\/strong\u003e Programming this key requires \u003cstrong\u003especialist BMW CAS4\/FEM diagnostic equipment\u003c\/strong\u003e that supports HITAG Pro. It \u003cstrong\u003ecannot be self-programmed\u003c\/strong\u003e. Not all general locksmiths have the equipment for this — please confirm your locksmith has CAS4\/FEM HITAG Pro capability before purchasing.\u003c\/div\u003e\n\u003c!-- Key Features --\u003e\n\u003cp class=\"bm3-section-title\"\u003eKey Features\u003c\/p\u003e\n\u003cdiv class=\"bm3-grid\"\u003e\n\u003cdiv class=\"bm3-card\"\u003e\n\u003cdiv class=\"bm3-card-icon\"\u003e🔑\u003c\/div\u003e\n\u003cp class=\"bm3-card-title\"\u003eComplete Smart Key\u003c\/p\u003e\n\u003cp class=\"bm3-card-desc\"\u003eFull key with all electronics inside — not a shell or casing only\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm3-card\"\u003e\n\u003cdiv class=\"bm3-card-icon\"\u003e📡\u003c\/div\u003e\n\u003cp class=\"bm3-card-title\"\u003e434MHz ASK\u003c\/p\u003e\n\u003cp class=\"bm3-card-desc\"\u003e434MHz ASK frequency matching BMW CAS4\/FEM factory specification\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm3-card\"\u003e\n\u003cdiv class=\"bm3-card-icon\"\u003e💾\u003c\/div\u003e\n\u003cp class=\"bm3-card-title\"\u003eHITAG Pro\u003c\/p\u003e\n\u003cp class=\"bm3-card-desc\"\u003ePCF7953P HITAG Pro — BMW's highest security AES transponder\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm3-card\"\u003e\n\u003cdiv class=\"bm3-card-icon\"\u003e🔧\u003c\/div\u003e\n\u003cp class=\"bm3-card-title\"\u003eHU100R Blade\u003c\/p\u003e\n\u003cp class=\"bm3-card-desc\"\u003eHU100R BMW reversed blade — confirm your blade profile before ordering\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm3-card\"\u003e\n\u003cdiv class=\"bm3-card-icon\"\u003e🎮\u003c\/div\u003e\n\u003cp class=\"bm3-card-title\"\u003e4 Buttons\u003c\/p\u003e\n\u003cp class=\"bm3-card-desc\"\u003e4-button smart key — lock, unlock, boot and panic\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm3-card\"\u003e\n\u003cdiv class=\"bm3-card-icon\"\u003e🛡️\u003c\/div\u003e\n\u003cp class=\"bm3-card-title\"\u003eCAS4 \/ FEM\u003c\/p\u003e\n\u003cp class=\"bm3-card-desc\"\u003eBMW's most advanced access system — 2009+ models with CAS4 or FEM\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Vehicle Compatibility Table --\u003e\n\u003cp class=\"bm3-section-title\"\u003eVehicle Compatibility\u003c\/p\u003e\n\u003ctable class=\"bm3-compat-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003cth\u003eFrom Year\u003c\/th\u003e\n\u003cth\u003eRemote Ref\u003c\/th\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eBlade\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBMW CAS4 \/ FEM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2009+\u003c\/td\u003e\n\u003ctd\u003eHUF 5663\u003c\/td\u003e\n\u003ctd\u003ePCF7953P HITAG Pro\u003c\/td\u003e\n\u003ctd\u003e434MHz ASK\u003c\/td\u003e\n\u003ctd\u003eHU100R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- Programming Info --\u003e\n\u003cp class=\"bm3-section-title\"\u003eProgramming Requirements\u003c\/p\u003e\n\u003cdiv class=\"bm3-info\"\u003e🔧 \u003cstrong\u003eSpecialist CAS4\/FEM HITAG Pro Programming Required\u003c\/strong\u003e — This BMW key uses the PCF7953P HITAG Pro chip and requires programming by a specialist automotive locksmith or mechanic with BMW CAS4\/FEM compatible diagnostic equipment that supports HITAG Pro (e.g., Autel IM608 Pro, Launch X431 Pro, VVDI2 or BMW ISTA-P). Standard diagnostic tools are unlikely to be sufficient. Please confirm your locksmith has the correct specialist equipment before purchasing.\u003c\/div\u003e\n\u003c!-- Technical Specifications --\u003e\n\u003cp class=\"bm3-section-title\"\u003eTechnical Specifications\u003c\/p\u003e\n\u003ctable class=\"bm3-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer Compatibility\u003c\/td\u003e\n\u003ctd\u003eBMW (Aftermarket)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle System\u003c\/td\u003e\n\u003ctd\u003eBMW CAS4 \/ FEM (2009+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote Reference\u003c\/td\u003e\n\u003ctd\u003eHUF 5663\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eAftermarket Compatible Smart Key\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChip\u003c\/td\u003e\n\u003ctd\u003ePCF7953P HITAG Pro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e434MHz ASK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eButtons\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlade\u003c\/td\u003e\n\u003ctd\u003eHU100R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming Method\u003c\/td\u003e\n\u003ctd\u003eSpecialist Diagnostic Only (CAS4\/FEM HITAG Pro tool required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Included\u003c\/td\u003e\n\u003ctd\u003eNo — purchase separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Access\u003c\/td\u003e\n\u003ctd\u003eTool Required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogo Included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- Before You Buy --\u003e\n\u003cp class=\"bm3-section-title\"\u003eBefore You Buy – Important Information\u003c\/p\u003e\n\u003cul class=\"bm3-checklist\"\u003e\n\u003cli\u003eThis is a \u003cstrong\u003ecomplete smart key\u003c\/strong\u003e with all electronics included — not a shell only\u003c\/li\u003e\n\u003cli\u003eKeys are \u003cstrong\u003enot supplied with logos\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery is NOT included\u003c\/strong\u003e — please purchase a compatible coin battery separately\u003c\/li\u003e\n\u003cli\u003eConfirm your BMW uses a \u003cstrong\u003eCAS4 or FEM immobiliser system\u003c\/strong\u003e — your locksmith can verify via VIN or diagnostic scan\u003c\/li\u003e\n\u003cli\u003eConfirm your key uses the \u003cstrong\u003eHU100R blade\u003c\/strong\u003e (reversed profile) before ordering\u003c\/li\u003e\n\u003cli\u003eYour locksmith must have \u003cstrong\u003especialist CAS4\/FEM equipment with HITAG Pro support\u003c\/strong\u003e — standard locksmith tools are unlikely to be sufficient\u003c\/li\u003e\n\u003cli\u003eRemote reference is \u003cstrong\u003eHUF 5663\u003c\/strong\u003e — verify this matches your current key if possible\u003c\/li\u003e\n\u003cli\u003eProgramming \u003cstrong\u003emust be performed\u003c\/strong\u003e by a qualified automotive locksmith or mechanic with specialist BMW equipment\u003c\/li\u003e\n\u003cli\u003eThis key \u003cstrong\u003ecannot be self-programmed\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Disclaimer --\u003e\n\u003cdiv class=\"bm3-note\"\u003e\n\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e This product is an aftermarket compatible replacement key, distributed as a substitute for the original manufacturer's product. It is not produced by, authorised, endorsed, or approved by BMW Group. The word \"BMW\" and all system names are used solely to indicate vehicle compatibility.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ===== END OF PRODUCT DESCRIPTION ===== --\u003e","brand":"FairTools","offers":[{"title":"Default Title","offer_id":54081639448771,"sku":"ftbmw4btn","price":193.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/3303\/2643\/files\/KGRBMW07.avif?v=1789029758","url":"https:\/\/aufairtools.com\/products\/bmw-cas4-fem-key-huf5663-pcf7953p-hitag-pro-434mhz-hu100r","provider":"FairTools","version":"1.0","type":"link"}