Cell phones left too close to keys of certain Nissan models can disable the electronic code on the keys, Reuters reports. The problem has occurred in a “very small percentage” of 2007 Nissan Altima and Infiniti G35 sedans. Nissan’s I-Keys use wireless devices to allow the driver to start the car without putting the keys in the ignition. A Nissan spokesperson reported that if the I-Key touches a cell phone, calls to the phone have the potential to alter the electronic code inside the I-Key. The car won’t start and the key cannot be reprogrammed, according to Nissan. Nissan says current owners have been notified and can get new keys from dealers if a problem occurs, reports Reuters.