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Renault Replacement Car Keys Key cards for Renault may stop working due to wear and tear. If you have a Renault Clio, Megane or Laguna and the buttons don't work, you should contact a locksmith who specialises in Renault keys and replacement cards. They can make replacements much cheaper than the dealer. It can also be an easier process. Lost or Damaged Keys It's not fun to lose your keys. You may feel frustrated or even angry. It's essential to stay calm and figure out the next step.