2023 Jeep Grand Cherokee L Radiator Fan Isn't Working

Radiator fan not working in 2023 Jeep Grand Cherokee L: causes and solutions

Find Repair Location
Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
34% chance it's the
Fan Motor or Clutch
0%
28% chance it's the
Fan Relay or Fuse
0%
23% chance it's the
Temp Sensor or Fan Control Module
0%
15% chance it's
Something else
The most common reasons a 2023 Jeep Grand Cherokee L radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor.
  • Fan Motor or Clutch: A faulty fan motor or a malfunctioning fan clutch can result in inadequate cooling, causing the engine to overheat.
  • Fan Relay or Fuse: A faulty fan relay or blown fuse can prevent the cooling fan from operating, leading to engine overheating.
  • Temp Sensor or Fan Control Module: A faulty temperature sensor or fan control module can result in incorrect readings, causing the engine to overheat or the cooling fan to operate improperly.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2023 Jeep Grand Cherokee L radiator fan isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Over time serpentine belts stretch, crack, and the ribs that ride on the accessory pulleys being to wear smooth. A squealing noise that increases with engine speed or as engine driven accessories are turned on may be noted. The noise is caused by the belt slipping on the pulleys, insufficiently driving them. Ineffective air conditioning, a battery warning light, or intermittent power steering assist can result from this.

»MORE: Symptoms of a bad serpentine belt

When the radiator fans stop functioning properly, the engine temperature will rise. The spike in temperature will be highest when the vehicle is idling at a stop, but should subside once the vehicle begins moving again.

Additionally, the air conditioner typically won't blow as cold. This is because the air from the radiator fans also blows across the air conditioning condenser, so when the fans fail, both systems suffer.

You'll also usually see the check engine light and notice a drop in fuel economy. It's possible the fan will start making noise if it's failing, as well.

What are the steps to diagnose the non-functioning radiator fan in a 2023 Jeep Grand Cherokee L?

To effectively diagnose a non-functioning radiator fan in your 2023 Jeep Grand Cherokee L, begin with the simplest solutions before progressing to more intricate assessments. Start by checking the fuse associated with the radiator fan; a blown fuse is a common and easily fixable issue that can halt fan operation. If the fuse is intact, move on to inspecting the relay that controls the fan. A malfunctioning relay can prevent the fan from receiving power, so ensure it is in good working condition. Next, test the radiator fan motor itself to confirm it is operational; if it fails to run, replacement may be necessary. Additionally, examine the wiring connected to the fan for any signs of damage or loose connections, as these can disrupt functionality. Finally, if the fan still does not operate, utilize a diagnostic scanner to check for any error codes related to the cooling system, which can provide further insight into the underlying problem. By following this structured approach, you can systematically identify and address the issue with your radiator fan.

What are the potential causes for the radiator fan not working in a 2023 Jeep Grand Cherokee L?

When troubleshooting the radiator fan issue in a 2023 Jeep Grand Cherokee L, it's essential to identify the common problems that could be causing the malfunction. A faulty fan motor is often the primary suspect, as it can fail to operate altogether, necessitating a replacement to restore functionality. Additionally, a blown fuse in the fan circuit can disrupt power flow, so checking and replacing any blown fuses is a straightforward first step. Another potential culprit is a faulty relay, which may require replacement to ensure the fan receives the necessary signals to operate. The coolant temperature sensor also plays a vital role in regulating the fan's operation; if it malfunctions, it can prevent the fan from turning on when needed. Lastly, wiring issues, such as damaged or loose connections, can impede the fan's performance, making it essential to inspect the wiring thoroughly. Addressing these common problems promptly is vital to prevent engine overheating and ensure the longevity of your vehicle.

How urgent is it to repair the non-working radiator fan in a 2023 Jeep Grand Cherokee L?

Repairing a non-working radiator fan in a 2023 Jeep Grand Cherokee L is an urgent matter that should not be overlooked. The radiator fan is essential for maintaining optimal engine temperature by effectively dissipating heat generated during operation. When this fan fails, the risk of engine overheating significantly increases, which can lead to severe consequences such as warped cylinder heads, blown head gaskets, or even complete engine failure. These issues not only result in costly repairs but can also leave you stranded, compromising your safety on the road. Additionally, a malfunctioning fan can negatively impact your vehicle's performance and fuel efficiency, leading to higher emissions and increased operational costs. Therefore, addressing the repair of your radiator fan promptly is crucial to avoid these serious repercussions and ensure your Jeep Grand Cherokee L runs smoothly and efficiently.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.