You can check the status of any LSC on your Toyota here. Warranty Enhancement Letter ZE2 Genuine Toyota 15767-31020 Engine Oil Cooler Pipe Subject: Limited Service Campaign (LSC) ZE2 2007-2011 Sienna, 2008-2011 Highlander and 2009-2011 Venza Vehicles Enhanced Warranty Coverage for Engine Oil Cooler Pipe Leak In Toyota's continuing efforts to ensure the best in customer satisfaction, Toyota is launching a Limited Service Campaign (LSC) 2007-2011 Sienna, 2008-2011 Highlander and 2009-2011 Venza Vehicles Background: In these vehicles, a small number of customers have reported an oil leak or seap from the Engine Oil Cooler Pipe. Limited Service Campaign (LSC) Remedy Authorized Toyota dealerships are requested to replace the Oil Cooler Pipe at NO CHARGE to the vehicle’s owner. The Primary Coverage offers warranty enhancement until January 31, 2016 with no mileage limitation. The Secondary Coverage is applicable for 10 years from the (DOFU) Date Of First Use or 150,000 miles, whichever occurs first. Owner Notification Mailing Date : The owner notification will commence in July, 2014, approximately 1 week after the dealer notification.