Join Date: Jul 2007
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The very same thing has just started happening to me. All was well on the way to the shops. Locked the car remotely. Went into shops, came out and unlocked the car remotely. When I got home the keycard wouldn't lock the car anymore! Tried new batteries. The card still unlocks the car and starts ignition. As you mentioned though. the LED doesn't light on card when unlocking button is pressed. Weekend ,so, naturally service desks are closed.
Currently in scottsloan's garage:
2001 Renault Laguna Expression 16v