2023 Mercedes-Benz GLA250 Radiator Fan Isn't Working

2023 Mercedes-Benz GLA250 radiator fan issues and solutions

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Reviewed by
Bo Fader
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 Mercedes-Benz GLA250 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 Mercedes-Benz GLA250 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 initial diagnostic steps to take when the radiator fan isn't working on a 2023 Mercedes-Benz GLA250?

When faced with a non-functioning radiator fan in your 2023 Mercedes-Benz GLA250, it's essential to approach the diagnosis methodically. Begin by checking the fuse associated with the radiator fan, as a blown fuse is a common and easily fixable issue that can halt fan operation. If the fuse is intact, the next step is to inspect the relay, which is responsible for supplying power to the fan; a malfunctioning relay can disrupt the fan's functionality. Following this, test the radiator fan motor itself to ensure it is operational, as a defective motor will prevent the fan from spinning. Additionally, examine the temperature sensor, which is crucial for activating the fan; if this sensor is faulty, it may not signal the fan to turn on when needed. Lastly, inspect the wiring connected to the fan for any signs of damage or loose connections, as these can significantly impede the fan's performance. By systematically addressing these areas, you can effectively diagnose and potentially resolve the radiator fan issue in your vehicle.

What are the common causes for the radiator fan not working in a 2023 Mercedes-Benz GLA250?

When diagnosing why the radiator fan in a 2023 Mercedes-Benz GLA250 is not functioning, it's essential to consider several common problems that could be at play. A faulty fan motor is often the primary suspect; if the motor fails, it won't spin, leading to inadequate cooling of the radiator. Additionally, a blown fuse can disrupt the power supply to the fan, rendering it inoperative. Another potential culprit is a malfunctioning temperature sensor, which may fail to signal the fan to activate when the engine reaches a certain temperature. Wiring issues, such as damaged or corroded connections, can also prevent the fan from receiving the necessary power. Furthermore, low coolant levels can inhibit the fan's operation, as the system relies on proper coolant levels to regulate engine temperature effectively. Lastly, a defective fan relay may fail to send the activation signal to the fan, causing it to remain off. Addressing these issues promptly is crucial to avoid engine overheating and potential damage, making it advisable for DIYers to conduct a thorough inspection or consult a professional if needed.

How urgent is it to address the non-functioning radiator fan in a 2023 Mercedes-Benz GLA250?

When it comes to the non-functioning radiator fan in your 2023 Mercedes-Benz GLA250, the urgency of addressing this issue cannot be overstated. A malfunctioning fan can severely compromise the engine's cooling system, leading to inadequate temperature regulation. This inadequacy can quickly escalate into overheating, which poses a significant risk to your engine's health. Overheating can cause critical components to warp or fail, resulting in costly repairs that could have been avoided with prompt action. In extreme scenarios, prolonged overheating may even lead to engine seizure, leaving you stranded and facing a complete breakdown. Therefore, if you notice any signs of a malfunctioning radiator fan, it is crucial to take immediate steps to diagnose and resolve the issue. By doing so, you not only protect your vehicle's performance but also ensure its longevity and reliability on the road.

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2023 Mercedes-Benz GLA250 Radiator Fan Issues & Repairs