The 10 Most Scariest Things About Laguna Cardkey Repair The Ultimate Guide to Renault Laguna Cardkey Repair: Troubleshooting, Solutions, and Maintenance Couple of things are as discouraging as strolling up to your automobile, pushing the unlock button on your key fob, and getting outright silence in return. For owners of the popular Renault Laguna-- particularly models utilizing the advanced hands-free keycard system-- this is an uniquely vexing problem. When your Laguna cardkey stops working, you aren't simply locked out; typically, you can't even start the ignition. Understanding why these cardkeys fail, how to identify the issue, and exploring the very best paths for Renault Laguna cardkey repair can conserve owners both time and hundreds of dollars at the car dealership. The Evolution of the Renault Laguna Keycard Introduced in the early 2000s for the Laguna II generation, Renault's credit-card-sized entry and ignition system was a major departure from standard physical keys. Instead of turning a metal type in a tumbler, drivers slid the card into a dash slot or kept it in their pocket while pressing a start button. While innovative and sleek, housing complex radio-frequency identification (RFID) chips, batteries, and intricate micro-switches inside a plastic card that regularly gets sat on, dropped, or exposed to wetness is a recipe for long-lasting wear and tear. Typical Symptoms of a Failing Laguna Cardkey Before diving into repair work, it helps to determine what sort of failure is occurring. Cardkey concerns usually fall into 2 classifications: overall electronic failure or mechanical micro-switch degradation. Intermittent Operation: The car opens sometimes, or the start button needs numerous attempts.