{"product_id":"secukey-4-0","title":"SecuKey 4.0 – Intelligent Protection Against Vehicle Theft","description":"\u003cdiv class=\"container-fluid no-gallery-image\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"product-info-content col-xs-12\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"clearfix product-info-content-wrapper\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"product-info-description col-md-8\"\u003e\n\u003cdiv class=\"nav-tabs-container\"\u003e\n\u003cdiv class=\"tab-content\"\u003e\n\u003cdiv class=\"tab-pane active\"\u003e\n\u003ch5 class=\"MsoNormal\"\u003e\n\u003cb\u003e\u003c\/b\u003e\u003cbr\u003e\n\u003c\/h5\u003e\n\u003ch5 class=\"MsoNormal\"\u003e\u003cb\u003eSecuKey 4.0 – Your invisible protection against modern vehicle theft\u003c\/b\u003e\u003c\/h5\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe SecuKey 4.0 – \u003cb\u003erecommended by SWR (Süddeutscher Rundfunk)\u003c\/b\u003e – is the intelligent answer to the latest methods of professional vehicle thieves. Developed for maximum security, completely without a workshop visit.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e🔒\u003c\/span\u003e Absolute security.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e⚡\u003c\/span\u003e Plug \u0026amp; Play in seconds.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e💰\u003c\/span\u003e No installation costs.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eWhy SecuKey 4.0?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eModern vehicles – whether with Keyless-Go or classic radio remote central locking – are increasingly the target of sophisticated radio attacks. Range extenders and signal storage devices allow thieves to open and start your vehicle – often unnoticed.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eThe SecuKey 4.0 puts a stop to exactly that.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThanks to innovative runtime measurement of the radio signal, the system immediately recognizes whether a signal comes directly from the original key – or has been manipulated. Extended, stored or copied signals? \u003cbr\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e👉\u003c\/span\u003e Are blocked without compromise.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eThe Secukey 4.0 is test winner 2025 in the field of car anti-theft protection.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1020\/2801\/7996\/files\/Secukey-Bild8-Estershop.jpg?v=1771520025\" alt=\"SecuKey 4.0 Test Winner 2025 Car Anti-Theft Protection Award\" style=\"max-width: 300px; width: 100%;\"\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eHow your shield works with the 2025 test winner\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Measures the exact runtime of the radio signal\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Detects manipulated or redirected signals\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Encrypted communication\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Immune to signal jammers\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e 100% compatible with 12-48 volt vehicles\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eWithout valid communication between SecuKey 4.0 and the high-security key, your vehicle remains locked.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Intercepted codes stand no chance.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Comfort remains – risk disappears\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e You continue to use your vehicle as usual.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Keyless system? Simply approach and open.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Classic radio key? Press the button.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eThe difference:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Only you can get in.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Child's play installation – without a workshop.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eWith the appropriate security adapter (available for almost every vehicle type), the SecuKey 4.0 is simply connected in the fuse box:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Pull the relevant fuse\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Insert the fuse adapter\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Reinsert the fuse into the fuse adapter\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Connect SecuKey – Done\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eNo structural changes. No interference with the vehicle electronics.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e No loss of warranty\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e Your vehicle remains in its original condition\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif;\"\u003e✅\u003c\/span\u003e 10-year functional warranty\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eWe stand behind this product:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eShould the SecuKey 4.0, contrary to expectations, stop working, you will receive a new device free of charge.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eWhy deactivating Keyless is not enough\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eMany believe that turning off Keyless is the solution. Unfortunately, it's not. When opening with the push of a button, you transmit the radio signal even over long distances – perfect for thieves with storage devices.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe SecuKey 4.0 reliably protects both systems. Developed for reality. Vehicle electronics are constantly evolving – and with them, the methods of thieves. The SecuKey 4.0 was designed precisely for this: a modern security system that withstands today's attacks.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eSecuKey 4.0. Maximum security. Minimum effort. No risk. Protect your vehicle now – before someone else steals it.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003ch5\u003e❓ \u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\n\u003c\/h5\u003e\n\u003cp\u003e\u003cem\u003eThe most important questions from our customers – answered concisely.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan thieves store the keyless signal and later use it to open the vehicle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeyless-Go systems work with live, real-time signals. Opening and starting the vehicle is only possible if the authorized vehicle key actively communicates with the vehicle. In so-called relay attacks, perpetrators therefore use range extenders to transmit and amplify the signal of the keyless key to the vehicle in real-time.\u003c\/p\u003e\n\u003cp\u003eRegardless, with all radio keys – both with and without a Keyless-Go function – there is a risk that radio signals can be intercepted and stored when a button is actively pressed. The SecuKey 4.0 offers effective protection against both attack scenarios through encrypted communication and signal runtime verification.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes deactivating the keyless function offer sufficient protection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDeactivating the keyless function prevents relay attacks, but it is not a comprehensive security solution.\u003c\/p\u003e\n\u003cp\u003eAfter deactivation, the vehicle must be manually locked and unlocked by pressing a button on the radio key. The radio signal transmitted in this process can be received and recorded from a greater distance. Stored signals can then be misused for unauthorized access. Comprehensive vehicle security therefore requires additional protective measures such as the SecuKey 4.0.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the SecuKey 4.0's radio signal be copied and repeated?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn principle, radio signals can be technically captured. However, the SecuKey 4.0 relies on a multi-layered security concept with encrypted communication and additional signal runtime measurement based on the Time-of-Flight principle.\u003c\/p\u003e\n\u003cp\u003eWith each activation, encrypted signals are exchanged between the key and the vehicle. Release only occurs if both the security codes are correct and the measured signal runtime corresponds to the defined parameters. Copied or repeated signals are instantly detected and blocked by the system, as the runtime verification cannot be met.\u003c\/p\u003e\n\u003cp\u003eThis multi-stage security concept offers effective protection against manipulation attempts and replay attacks.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich vehicles is the SecuKey 4.0 suitable for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe SecuKey 4.0 is universally designed for all vehicles with a board voltage of 12 to 48 volts. Installation is via the fuse slot of the Keyless-Go system or the central locking system and is therefore suitable for most modern vehicle models.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs a specialist workshop required for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The SecuKey 4.0 is designed as a plug-and-play solution. With the optionally available, vehicle-specific fuse adapter, installation can be carried out without a workshop visit.\u003c\/p\u003e\n\u003cp\u003eThe installation effort is minimal and corresponds to replacing a vehicle fuse. Technical knowledge or special tools are not required. Installation can be carried out independently in a few minutes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich fuse is required for installation with the fuse adapter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAs a rule, this is the fuse for the Keyless-Go system or the central locking system.\u003c\/p\u003e\n\u003cp\u003eThe fuse assignment varies depending on the vehicle manufacturer, model, and year of manufacture. Not all manufacturers provide fully detailed fuse diagrams. Since the position of the relevant fuse can vary even within identical models, we recommend identification based on the vehicle documentation or the fuse diagram in the fuse box.\u003c\/p\u003e\n\u003cp\u003eAlternatively, the correct fuse can be determined by a simple function test: remove individual fuses one after another and check whether the Keyless function or central locking is deactivated. This process is uncomplicated and does not cause any damage to the vehicle.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e📖 \u003cstrong\u003eFurther articles:\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"\/en\/blogs\/neuigkeiten\/keyless-go-wie-diebe-in-sekunden-dein-auto-stehlen-und-wie-du-dich-schutzt\"\u003eKeyless Go: How thieves steal your car in seconds – and how you protect yourself\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"\/en\/blogs\/neuigkeiten\/fahrzeugdiebstahl-in-deutschland-2026-zahlen-fakten-schutzmassnahmen\"\u003eVehicle theft in Germany 2026: Figures, facts, protective measures\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estershop","offers":[{"title":"without Secu-adapter","offer_id":56773223842124,"sku":"1021-A","price":375.0,"currency_code":"EUR","in_stock":true},{"title":"Secu-Adapter Standard","offer_id":56773223874892,"sku":"1021-B","price":398.0,"currency_code":"EUR","in_stock":true},{"title":"Secu-Adapter Mini","offer_id":56773223907660,"sku":"1021-C","price":398.0,"currency_code":"EUR","in_stock":true},{"title":"Secu-Adapter Micro2","offer_id":56773223940428,"sku":"1021-D","price":398.0,"currency_code":"EUR","in_stock":true},{"title":"Secu-Adapter Low Profile","offer_id":56773223973196,"sku":"1021-E","price":398.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/2801\/7996\/files\/Secukey-4.0.gif?v=1771520025","url":"https:\/\/estershop.de\/en\/products\/secukey-4-0","provider":"Estershop Support Team","version":"1.0","type":"link"}