NHTSA Preliminary Evaluation PE15003

On October 15, 2015, Fiat Chrysler Automobiles, US LLC, (FCA), submitted a Defect Information Report (DIR) to NHTSA regarding an air-conditioning suction/discharge combo line routing condition that may result in engine compartment fire in approximately 75,574 model year (MY) 2015 Jeep Cherokee vehicles equipped with 2.4L engines and built from October 1, 2014 through June 18, 2015 (NHTSA Recall 15V-676, FCA Recall R57).According to FCA's DIR, a misrouted A/C combo line can be pinched and cut or thermally degraded by the exhaust manifold heat shield, potentially resulting in loss of air conditioning, smoke and/or fire from ignition of leaked A/C refrigerant oil onto a hot exhaust manifold.The recalled vehicles will be inspected for misrouted A/C combo lines and those found to be misrouted will be replaced.FCA estimates that one percent of the recalled population may be affected by the A/C combo line routing defect.ODI?s analysis of warranty data provided by FCA in response to the information request letter for PE15-003 identified a spike in claims related to the A/C combo line leakage in vehicles equipped with 2.4L engines built after October 1, 2014.FCA implemented its final process corrective action for the hose routing concern on June 18, 2015.The 113,034 MY 2015 Jeep Cherokee vehicles equipped with 3.2L engines have different A/C line routing configurations and are not affected by the A/C combo line routing defect.FCA provided a total of 220 warranty claims potentially related to the A/C combo line in vehicles equipped with 2.4L engines.Ninety-five percent of the claims (210) involved the 74,574 Jeep Cherokee 2.4L vehicles built during the recall period.Only 10 A/C combo line claims and no related fires were identified in the 28,250 Jeep Cherokee 2.4L vehicles that were built before or after the period with the hose routing concern.Analysis of engine compartment fires reported to ODI and FCA identified a total of 10 fires in MY 2015 Jeep Cherokee vehicles.Nine (9