Tl* the contact owns a 2015 lexus es350. the contact stated that the push button start functioned properly for at least eleven months. afterwards, the contact had to make several attempts to get the push button start to function properly. the dealer indicated that they were unable to replicate and diagnose the failure. the dealer had not test driven the vehicle. the manufacturer was notified and indicated that they would investigate the failure. the contact had not received a response. the vin and failure mileage were not available.