{"id":18357,"date":"2026-08-10T13:23:40","date_gmt":"2026-08-10T13:23:40","guid":{"rendered":"https:\/\/launch431.eu\/?post_type=product&#038;p=18357"},"modified":"2026-08-11T16:48:27","modified_gmt":"2026-08-11T16:48:27","slug":"launch-x431-immobilizer-programmer-simulator-key-for-toyota","status":"publish","type":"product","link":"https:\/\/launch431.eu\/fr\/launch-x431-immobilizer-programmer-simulator-key-for-toyota\/","title":{"rendered":"Launch X431 Immobilizer Programmer Simulator Key SI-KEY for Toyota All Key Lost"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"18357\" class=\"elementor elementor-18357\" data-elementor-post-type=\"product\">\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"wd-negative-gap elementor-element elementor-element-e4ecb2d wd-collapsible-content e-flex e-con-boxed e-con e-parent\" data-id=\"e4ecb2d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d269e5b wd-width-100 elementor-widget elementor-widget-wd_title\" data-id=\"d269e5b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"title-wrapper wd-set-mb reset-last-child wd-title-color-default wd-title-style-default wd-title-size-default text-left\">\n\n\t\t\t\n\t\t\t<div class=\"liner-continer\">\n\t\t\t\t<h4 class=\"woodmart-title-container title wd-fontsize-l\">Launch X431 SI-KEY Smart Key Simulator \u2013 Toyota All Keys Lost Programming Accessory<\/h4> \n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc9fa4d elementor-widget__width-initial elementor-widget elementor-widget-wd_text_block\" data-id=\"dc9fa4d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<p>The\u00a0<strong>Launch X431 SI-KEY Smart Key Simulator<\/strong>\u00a0is a professional immobiliser programming accessory designed primarily for supported\u00a0<strong>Toyota All Keys Lost (AKL)<\/strong>\u00a0procedures.<\/p><p>Instead of acting as a replacement key, SI-KEY temporarily\u00a0<strong>simulates supported smart-key chip behaviour<\/strong>\u00a0during the programming process. It works within the Launch X431 IMMO ecosystem together with compatible\u00a0<strong>X-PROG3 \/ GIII and X431 IMMO platforms<\/strong>.<\/p><p>Ideal for automotive locksmiths and advanced workshops dealing with Toyota smart-key systems where\u00a0<strong>no valid working key remains<\/strong>.<\/p><h2>\u2b50 Key Features<\/h2><ul data-spread=\"false\"><li>Designed primarily for supported\u00a0<strong>Toyota All Keys Lost<\/strong>\u00a0procedures<\/li><li>Simulates supported\u00a0<strong>smart-key chip responses<\/strong><\/li><li>Supports ignition \/ immobiliser data interaction<\/li><li>Assists with supported key-chip data processing<\/li><li>Works with compatible\u00a0<strong>X-PROG3 \/ GIII<\/strong><\/li><li>Supports compatible\u00a0<strong>X431 IMMO Plus &amp; IMMO Elite<\/strong>\u00a0configurations<\/li><li>Integrates with guided Launch immobiliser software<\/li><li>Compact professional locksmith accessory<\/li><li>Selected current Launch packages also list\u00a0<strong>BYD AKL<\/strong>\u00a0applications<\/li><li>Not a permanent vehicle key or standalone key programmer<\/li><\/ul><h2>\ud83d\udd11 Main Functions<\/h2><table><tbody><tr><th><strong>Smart-Key Simulation<\/strong><\/th><th><strong>AKL Assistance<\/strong><\/th><th><strong>Data Interaction<\/strong><\/th><\/tr><tr><td>Simulates supported key-chip behaviour<\/td><td>Toyota All Keys Lost workflows<\/td><td>Ignition coil data collection<\/td><\/tr><tr><td>Temporary simulated key response<\/td><td>Assists when no valid key remains<\/td><td>Immobiliser communication<\/td><\/tr><tr><td>Works during programming<\/td><td>Supports key-learning workflow<\/td><td>Key-chip data processing<\/td><\/tr><tr><td>Not a permanent customer key<\/td><td>Replacement key registered afterwards<\/td><td>Vehicle-dependent decoding<\/td><\/tr><tr><td>Software-dependent operation<\/td><td>Guided Launch procedure<\/td><td>IMMO-system dependent<\/td><\/tr><\/tbody><\/table><p>The SI-KEY works as part of the complete Launch programming environment rather than independently performing the entire immobiliser procedure.<\/p><h2>\ud83d\ude97 Toyota Smart-Key Applications<\/h2><table><tbody><tr><td><strong>Vehicle Applications<\/strong><\/td><td><strong>Smart-Key Systems<\/strong><\/td><td><strong>Programming Applications<\/strong><\/td><\/tr><tr><td>Toyota passenger cars<\/td><td>Smart-entry systems<\/td><td>All Keys Lost<\/td><\/tr><tr><td>Toyota SUVs<\/td><td>Push-button start<\/td><td>Smart-key registration<\/td><\/tr><tr><td>Toyota hybrids<\/td><td>Multiple IMMO generations<\/td><td>Key-learning assistance<\/td><\/tr><tr><td>Model-dependent coverage<\/td><td>Immobiliser systems<\/td><td>Supported AKL workflows<\/td><\/tr><tr><td>Selected additional brands*<\/td><td>Software-dependent<\/td><td>Vehicle-specific procedures<\/td><\/tr><\/tbody><\/table><p>*Selected current Launch packages also list\u00a0<strong>BYD and additional applications<\/strong>. Toyota remains the primary documented application, and additional-brand support should be verified in current Launch software.<\/p><h2>\ud83d\udd17 SI-KEY + X-PROG3 + X431 IMMO<\/h2><table><tbody><tr><td><strong>X431 \/ IMMO Tablet<\/strong><\/td><td><strong>X-PROG3 \/ GIII<\/strong><\/td><td><strong>SI-KEY Simulator<\/strong><\/td><\/tr><tr><td>Vehicle communication<\/td><td>Advanced IMMO programming<\/td><td>Smart-key simulation<\/td><\/tr><tr><td>Guided procedures<\/td><td>EEPROM \/ MCU functions<\/td><td>Temporary key-chip response<\/td><\/tr><tr><td>Immobiliser menus<\/td><td>Key programming \/ learning<\/td><td>Toyota AKL assistance<\/td><\/tr><tr><td>Key registration workflow<\/td><td>IMMO data operations<\/td><td>Ignition\/IMMO interaction<\/td><\/tr><tr><td>Diagnostic software<\/td><td>Key generation functions<\/td><td>Supported data collection<\/td><\/tr><tr><td>Vehicle-specific instructions<\/td><td>ECU-related IMMO functions<\/td><td>Works within guided workflow<\/td><\/tr><\/tbody><\/table><p>These components perform\u00a0<strong>different roles and work together<\/strong>\u00a0during compatible procedures. The SI-KEY does not replace the X-PROG3\/GIII programmer or diagnostic tablet.<\/p><h2>\ud83d\udcf1 Launch Platform Compatibility<\/h2><table><tbody><tr><td><strong>Programming Hardware<\/strong><\/td><td><strong>Diagnostic Platforms<\/strong><\/td><td><strong>Exigences<\/strong><\/td><\/tr><tr><td>X-PROG3 \/ GIII<\/td><td>X431 IMMO Plus<\/td><td>Compatible tablet model<\/td><\/tr><tr><td>Supported IMMO hardware<\/td><td>X431 IMMO Elite<\/td><td>Active IMMO functions<\/td><\/tr><tr><td>Vehicle-specific setup<\/td><td>Compatible X431 IMMO platforms<\/td><td>Current software version<\/td><\/tr><tr><td>Required where specified<\/td><td>Supported X431 configurations<\/td><td>Supported vehicle \/ IMMO<\/td><\/tr><tr><td>SI-KEY accessory<\/td><td>Guided Launch software<\/td><td>Correct regional configuration<\/td><\/tr><\/tbody><\/table><p><strong>Important:<\/strong>\u00a0SI-KEY should not be assumed compatible with every Launch X431 scanner. Compatibility depends on the exact platform, software version and activated immobiliser functions.<\/p><h2>\u2699\ufe0f Technical &amp; Functional Specifications<\/h2><table><tbody><tr><td><strong>Product Information<\/strong><\/td><td><strong>Fonctions<\/strong><\/td><td><strong>Compatibilit\u00e9<\/strong><\/td><\/tr><tr><td><strong>Product:<\/strong>\u00a0Launch X431 SI-KEY<\/td><td><strong>Key-Chip Simulation:<\/strong>\u00a0Pris en charge<\/td><td><strong>Primary Brand:<\/strong>\u00a0Toyota<\/td><\/tr><tr><td><strong>Type:<\/strong>\u00a0Smart Key \/ IMMO Simulator<\/td><td><strong>Ignition Data Collection:<\/strong>\u00a0Pris en charge<\/td><td><strong>Toyota AKL:<\/strong>\u00a0Supported applications<\/td><\/tr><tr><td><strong>Application:<\/strong>\u00a0All Keys Lost<\/td><td><strong>Key Data Processing:<\/strong>\u00a0Supported workflow<\/td><td><strong>X-PROG3 \/ GIII:<\/strong>\u00a0Pris en charge<\/td><\/tr><tr><td><strong>Permanent Vehicle Key:<\/strong>\u00a0Non<\/td><td><strong>Smart-Key Simulation:<\/strong>\u00a0Oui<\/td><td><strong>IMMO Plus:<\/strong>\u00a0Supported configuration<\/td><\/tr><tr><td><strong>Standalone Programmer:<\/strong>\u00a0Non<\/td><td><strong>Key Learning:<\/strong>\u00a0Workflow dependent<\/td><td><strong>IMMO Elite:<\/strong>\u00a0Supported configuration<\/td><\/tr><tr><td><strong>Diagnostic Scanner:<\/strong>\u00a0Non<\/td><td><strong>Add Key:<\/strong>\u00a0Vehicle\/software dependent<\/td><td><strong>BYD AKL:<\/strong>\u00a0Selected packages<\/td><\/tr><tr><td><strong>Use:<\/strong>\u00a0Professional workshop<\/td><td><strong>AKL Assistance:<\/strong>\u00a0Oui<\/td><td><strong>Coverage:<\/strong>\u00a0Software\/IMMO dependent<\/td><\/tr><\/tbody><\/table><h2>\ud83d\udd04 Add Key vs All Keys Lost<\/h2><table><tbody><tr><td><strong>Add Key<\/strong><\/td><td><strong>All Keys Lost (AKL)<\/strong><\/td><td><strong>SI-KEY Role<\/strong><\/td><\/tr><tr><td>Valid key still available<\/td><td>No valid working key remains<\/td><td>Designed primarily for AKL<\/td><\/tr><tr><td>Existing key authenticates vehicle<\/td><td>Normal Add Key may be unavailable<\/td><td>Simulates supported key response<\/td><\/tr><tr><td>New key added to system<\/td><td>Additional IMMO steps required<\/td><td>Assists programming workflow<\/td><\/tr><tr><td>Standard supported procedure<\/td><td>Advanced procedure<\/td><td>Temporary programming tool<\/td><\/tr><tr><td>SI-KEY may not be required<\/td><td>SI-KEY used where specified<\/td><td>Not the final vehicle key<\/td><\/tr><\/tbody><\/table><p>The SI-KEY is particularly valuable for supported\u00a0<strong>All Keys Lost scenarios<\/strong>, where the normal valid-key workflow is unavailable.<\/p><h2 class=\"translation-block\">\ud83d\udce6 <strong data-start=\"7606\" data-end=\"7626\">Contenu de l\u2019emballage<\/strong><\/h2><p>The\u00a0<strong>Launch X431 SI-KEY Smart Key Simulator<\/strong>\u00a0package includes:<\/p><ul data-spread=\"false\"><li>1 \u00d7\u00a0<strong>Launch X431 SI-KEY Smart Key Simulator<\/strong><\/li><li>Product packaging \/ storage supplied with the unit<\/li><\/ul><h2>\ud83c\udd9a SI-KEY vs Permanent Smart Key<\/h2><table><tbody><tr><td><strong>SI-KEY Simulator<\/strong><\/td><td><strong>Permanent Smart Key<\/strong><\/td><td><strong>Key Difference<\/strong><\/td><\/tr><tr><td>Workshop programming accessory<\/td><td>Customer's finished key<\/td><td>Different purposes<\/td><\/tr><tr><td>Simulates key-chip response<\/td><td>Stores permanent programmed data<\/td><td>Temporary vs permanent<\/td><\/tr><tr><td>Used during supported AKL<\/td><td>Used for normal vehicle operation<\/td><td>Programming vs driving<\/td><\/tr><tr><td>Requires programming platform<\/td><td>Requires vehicle registration<\/td><td>SI-KEY works with Launch system<\/td><\/tr><tr><td>Not supplied as customer key<\/td><td>Remains with customer<\/td><td>SI-KEY stays in workshop<\/td><\/tr><\/tbody><\/table><h2>\ud83c\udd9a SI-KEY vs X-PROG3 \/ GIII<\/h2><table><tbody><tr><td><strong>SI-KEY<\/strong><\/td><td><strong>X-PROG3 \/ GIII<\/strong><\/td><td><strong>Key Difference<\/strong><\/td><\/tr><tr><td>Smart-key simulator<\/td><td>Main IMMO programmer<\/td><td>Accessory vs core hardware<\/td><\/tr><tr><td>Assists supported Toyota AKL<\/td><td>Runs programming workflow<\/td><td>Different system roles<\/td><\/tr><tr><td>Key-chip simulation<\/td><td>Key programming \/ learning<\/td><td>Simulation vs programming<\/td><\/tr><tr><td>No EEPROM \/ MCU work<\/td><td>EEPROM \/ MCU functions<\/td><td>X-PROG3 handles advanced data<\/td><\/tr><tr><td>No standalone key generation<\/td><td>Key generation supported<\/td><td>SI-KEY is specialised<\/td><\/tr><tr><td>No standalone operation<\/td><td>Works with compatible Launch platform<\/td><td>Designed to work together<\/td><\/tr><\/tbody><\/table><h2>\u26a0\ufe0f Compatibility &amp; Usage<\/h2><table><tbody><tr><td><strong>Vehicle Check<\/strong><\/td><td><strong>Equipment Check<\/strong><\/td><td><strong>Programming Check<\/strong><\/td><\/tr><tr><td>Confirm exact model<\/td><td>Confirm X431 compatibility<\/td><td>Follow Launch procedure<\/td><\/tr><tr><td>Confirm model year<\/td><td>Verify X-PROG3\/GIII requirement<\/td><td>Maintain stable battery voltage<\/td><\/tr><tr><td>Check IMMO generation<\/td><td>Check active IMMO functions<\/td><td>Do not interrupt programming<\/td><\/tr><tr><td>Verify smart-key system<\/td><td>Update compatible software<\/td><td>Prepare permanent replacement key<\/td><\/tr><tr><td>Confirm AKL coverage<\/td><td>Check regional configuration<\/td><td>Verify final key operation<\/td><\/tr><\/tbody><\/table><p>The\u00a0<strong>Launch SI-KEY is a professional immobiliser programming accessory<\/strong>. It should only be used on vehicles you own or are authorised to service.<\/p><p>Do not assume that every Toyota smart-key system or All Keys Lost procedure requires or supports SI-KEY. Always verify coverage in the current Launch software before starting the procedure.<\/p><h2>Why Choose Launch X431 SI-KEY?<\/h2><p>The\u00a0<strong>Launch X431 SI-KEY<\/strong>\u00a0expands compatible Launch immobiliser programming systems with specialised\u00a0<strong>smart-key simulation for supported Toyota All Keys Lost applications<\/strong>.<\/p><p>Working alongside\u00a0<strong>X-PROG3 \/ GIII and compatible X431 IMMO platforms<\/strong>, it can assist technicians when no valid original smart key remains by providing the temporary simulated key-chip response required by supported programming workflows.<\/p><p>For professional automotive locksmiths and advanced IMMO workshops already using the Launch ecosystem, SI-KEY provides a\u00a0<strong>compact and specialised solution for supported AKL procedures without replacing the permanent key or core programming hardware<\/strong>.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f91b683 elementor-widget elementor-widget-wd_button\" data-id=\"f91b683\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wd_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"wd-button-wrapper text-left wd-collapsible-button\" >\n\t\t\t<a class=\"btn btn-style-default btn-shape-round btn-size-default btn-color-primary btn-icon-pos-right\"  href=\"#\">\n\t\t\t\t<span class=\"wd-btn-text\" data-elementor-setting-key=\"text\">\n\t\t\t\t\tEn savoir plus\t\t\t\t<\/span>\n\n\t\t\t\t\t\t\t\t\t<span class=\"wd-btn-icon\">\n\t\t\t\t\t\t<img decoding=\"async\"  src=\"https:\/\/launch431.eu\/wp-content\/uploads\/2025\/01\/chevron-down-black.svg\" title=\"chevron-down-noir\" loading=\"lazy\" width=\"15\" height=\"15\">\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>The\u00a0<strong>LAUNCH X431 Immobilizer Programmer Simulator Key<\/strong>\u00a0is a professional accessory designed for\u00a0<strong>Toyota\/Lexus immobilizer and smart key programming<\/strong>. Used with compatible LAUNCH X431 IMMO diagnostic equipment, it helps technicians perform key learning and immobilizer-related operations on supported vehicle models.<\/p>\n<p>The simulator key is especially useful for professional\u00a0<strong>IMMO servicing and All Keys Lost situations<\/strong>, helping simplify key programming procedures without requiring an original working key in supported applications.<\/p>\n<p>An ideal accessory for automotive locksmiths, key programming specialists and professional workshops using\u00a0<strong>LAUNCH X431 immobilizer programming tools<\/strong>\u00a0for Toyota and Lexus vehicles.<\/p>","protected":false},"featured_media":18364,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[195],"product_tag":[1726,414,1869,1868,1873,1776,572,1871,1870,1872,1874],"class_list":["post-18357","product","type-product","status-publish","has-post-thumbnail","product_cat-accessories","product_tag-2026-edition","product_tag-launch-europe","product_tag-launch-immo","product_tag-launch-immobilizer","product_tag-launch-simulator-key","product_tag-launch-x431","product_tag-launch-x431-accessories","product_tag-toyota-immo","product_tag-toyota-immobilizer","product_tag-toyota-simulator-key","product_tag-x431-simulator-key","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"exclude_global_add_ons":[],"addons":[],"acf":[],"wcpa_form_fields":null,"_links":{"self":[{"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/product\/18357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":14,"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/product\/18357\/revisions"}],"predecessor-version":[{"id":18795,"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/product\/18357\/revisions\/18795"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/media\/18364"}],"wp:attachment":[{"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/media?parent=18357"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/product_brand?post=18357"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/product_cat?post=18357"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/launch431.eu\/fr\/wp-json\/wp\/v2\/product_tag?post=18357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}