The 2015 Jeep Renegade thermostat is in the thermostat housing on the lower coolant line. The thermostat is what measures the temperature of the coolant running through the line, and from there it can determine what temp the engine is running at. If this part is not working then the engine runs the risk of overheating, which is bad for the car. If an engine overheats it will run the risk of warping or cracking the head gasket, which will cost thousands to fix in the long run. If You get a check engine light telling You that the thermostat is not working then get it fixed right away. It is only about 200 for a full replacement so You do not want to wait.
Jeremy
May 15, 2022
Wrong the ambient temperature sensor is in the passenger mirror. It Isa horrible design if it doesn't work the account work. It is in a enclosed area with no air and the mirror is all black so like a mini oven. I'm about to replace mine and see if that helps
Martha W
July 16, 2020
The 2015 jeep renegade ambient air temp sensor location is at the front of the engine bay under the hood.
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