One problem related to ignition module has been reported for the 2009 Infiniti G37. The most recently reported issues are listed below.
The contact owns a 2009 Infiniti G37. The contact stated that the vehicle continued to operate even after the ignition key was removed. All the warning indicators illuminated on the instrument panel. The vehicle was brought to the dealer where the fuse was removed to stop the engine. It was diagnosed that the electronic control module malfunctioned and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 68,000. The VIN was not provided.