Chrysler 300 Overheating Due to Failed Radiator Fan

Had a similar issue with my 2009 Chrysler Sebring last summer. The car overheating symptoms matched exactly, minimal fan noise and temperature control problems. The thermal switch was actually fine in my case. After testing, it turned out the fan motor had failed completely, and some wiring was damaged due to heat exposure. The cooling system was struggling because the fan wasnt engaging properly at high temperatures. This is a serious issue that needs immediate attention. Continuing to drive with a malfunctioning radiator fan can lead to severe engine damage. The repair required: Full fan assembly replacement, New wiring harness installation, Cooling system pressure test, Temperature sensor verification The fix took about 4 hours at the shop. While checking everything, they also found the fan blade had a small crack, which explained the weird noise when it was still trying to spin. Worth getting this checked soon, overheating can cascade into much bigger problems if left unaddressed. Making sure your cooling system works properly is essential for engine longevity.

Thanks for sharing your experience with the fan assembly problem. Im having nearly identical symptoms with my 300, and its reassuring to hear its likely a similar issue with the fan motor rather than something worse. Have you had any other engine cooling problems since getting it fixed last summer? Also curious about the final repair cost, would help me know what to budget for when I take it to the shop.

Thanks for asking about the follow-up. Since getting the radiator fan fixed, the temperature control has been working perfectly, no more overheating issues at all. The mechanic found that the speed sensor was defective, which was preventing the fan motor from engaging properly. The total repair came to 250€, including parts and labor. This was actually less expensive than initially expected, since they didnt need to replace the entire fan assembly like in some cases. The cooling system is now functioning exactly as it should. The fan noise is back to normal, and the engine maintains proper operating temperature even during hot weather or heavy traffic. Its been around 8 months since the repair, and I havent experienced any related problems. Getting it fixed promptly was definitely the right choice to prevent more extensive damage to the engine. When these fan issues occur, they rarely resolve themselves and usually just get worse over time.

Thanks for the advice. I took my 300 to a new mechanic yesterday and the diagnosis matched what you described. The radiator fan motor was shot and there was some electrical damage too. Total bill came to 340€ for parts and labor: New fan motor assembly, Wiring repair, System diagnostic test, Coolant top-up The repair took about 3 hours. Already notice a huge difference, can actually hear the fan noise now when it kicks in and the temperature gauge stays right where it should. The check engine light is gone too. The mechanic was straight with me and showed me the old parts. The fan blade was pretty worn and the motor bearings were completely seized. Glad I got it fixed before any serious engine damage happened. Temperature control is working perfectly now. Really appreciate the help in knowing what to expect. Made me feel more confident going into the shop this time around.