NHTSA Complaint #11516608 — 2022 WINNEBAGO EKKO

The Balmar charge controller for the coach lithium batteries failed. The controller is rated for temperatures up to 90 C (194 F). Based on Ekko forum discussions I suspected the controller, which is located in close proximity to the passenger side turbocharger was overheating. I fashioned an improvised heat shield between the turbocharger and controller and after driving in 74 F ambient conditions measured temperatures of 285 F on the heat shield and 185 F at the controller surface. I also added heat shielding to the controller wiring, which is also very close to the turbocharger. Clearly without owner-added heat shielding, (and even with during higher than 74 F ambient temperatures) the controller is far exceeding it's allowable temperature maximum.