{
  "id": 1884470,
  "title": "Keyless: Welche Automarken weiterhin auf unsichere Schlüsselsysteme setzen",
  "url": "https://urgent.news/2026/08/19/keyless-welche-automarken-weiterhin-auf-unsichere-schlusselsysteme",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-08-19T07:15:33.000Z",
  "source": {
    "name": "Handelsblatt",
    "slug": "handelsblatt",
    "url": "https://www.handelsblatt.com/mobilitaet/ratgeber-service/keyless-systeme-welche-automarken-weiterhin-auf-unsichere-funktechnik-setzen/100248234.html"
  },
  "original_language": "de",
  "account": "Keyless access systems in numerous vehicle models remain a security risk, according to the ADAC's decade-long review of keyless tests. Nearly half of the examined cars can still be opened using an artificially extended radio signal, and around a third have had their engines started. The ADAC's database of test data now includes over 850 vehicles. Overall, the situation has improved in recent years, with some manufacturers improving their systems and switching to the comparatively secure Ultra-Wide Band technology (UWB). The vehicle determines whether the key is truly nearby based on the signal timing, and prevents unauthorized access if the key is detected within close proximity. However, other brands continue to use older systems that can be fooled with a relay attack, extending the radio connection between the vehicle and the key over hundreds of meters and through walls or doors. Once the engine is started, the car can usually be moved without the key's presence, until the fuel tank or drivetrain battery is depleted. The ADAC particularly criticizes Aiways, Alfa Romeo, Alpine, BYD, Chevrolet, DS Automobiles, Fiat, Honda, Infiniti, Isuzu, Jeep, KGM/Ssangyong, Lynk&Co, MG, and Opel, stating that none of the tested vehicles from these brands were adequately protected. A metal can can shield the signal, and key fobs with built-in motion sensors are also unreliable, remaining vulnerable until their battery runs out. Car owners with unprotected systems can check if the keyless function can be disabled via the vehicle's menu or instructions from the manufacturer. A shielded key fob case or a closed metal can can block the radio signal. The ADAC also advises consumers not to keep their keys near windows, exterior walls, or doorways, and to inquire about the use of secure UWB technology when purchasing a new vehicle. Experts recommend foregoing the convenience feature if there is any doubt.",
  "summary": "Viele Autos öffnen automatisch, sobald sich der Fahrer mit dem Schlüssel nähert. Doch nicht alle Funksysteme sind sicher, warnt der ADAC in einer neuen Untersuchung.",
  "key_points": [
    "Nearly half of tested cars can be opened using extended radio signal.",
    "Around a third have had engines started by relay attack."
  ],
  "editors_take": "The ADAC's findings highlight a continued security risk for car owners with keyless access systems, particularly for models from brands that have not upgraded to secure Ultra-Wide Band technology.",
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}