Troubleshooting Heated Rear Window Not Working


Frank Ahmadzay

December 20, 2023

In the chilly embrace of winter, a malfunctioning heated rear window can be more than an inconvenience; it’s a potential road hazard. Back window repair in Aurora extends beyond fixing shattered glass, delving into the intricacies of heated windows. This blog serves as a troubleshooting guide, unraveling common issues with rear window heaters. 

From understanding the anatomy of the rear screen to deciphering the reasons behind expensive window repairs, we’ll navigate through the nuances of heated car window problems. Join us on this journey to ensure that your vehicle’s heated rear window functions optimally, providing both safety and comfort during colder seasons.

Common Causes of Heated Rear Window Malfunction

If your heated rear window is not working, it is often caused by common issues that can be easily resolved. To identify the problem, you can use various troubleshooting techniques. First, check the fuse related to the heated rear window and replace it if necessary. Next, inspect the wiring connections to ensure they are secure and free from damage. If the connections are fine, it’s possible that the problem lies with the switch or the relay. 

Consider testing them with a multimeter to determine if they are functioning correctly. Another possible solution is to check the heating elements on the window itself. Look for any signs of damage or disconnection. If needed, replace the elements to restore functionality. By following these troubleshooting techniques, you can resolve common issues and get your heated rear window working again.

Checking the Fuse and Relay

To check the fuse and relay for your heated rear window, begin by locating the fuse box in your vehicle. It is usually found in the engine compartment or under the dashboard. Once you have located the fuse box, follow these steps:

  1. Remove the cover of the fuse box and locate the fuse for the heated rear window. Check if the fuse is blown by visually inspecting it or using a multimeter to test the continuity.
  2. If the fuse is intact, move on to checking the relay. The relay is usually labeled and can be found in the fuse box or a separate relay box. Test the relay by swapping it with a similar relay from another function and see if the heated rear window starts working.
  3. If both the fuse and relay are in good condition, you may need to test the voltage at the rear window connector to ensure it is receiving power. Use a multimeter to measure the voltage.
  4. Check the ground connection for the heated rear window. Ensure that the ground wire is securely connected and not corroded.
heated rear window not working

Testing the Window Grid for Damage

Now it’s time to examine the window grid for any signs of damage. Start by inspecting the grid closely to identify any broken connections or visible cracks. Once you’ve identified potential damage, you can proceed to test the electrical continuity of the grid to determine if it’s functioning properly.

Grid Inspection for Damage

Have you thoroughly inspected the window grid for any signs of damage? Before proceeding with any grid repair or troubleshooting techniques, it is essential to examine the grid closely. Here are four steps to help you inspect the window grid for damage:

  1. Visual Inspection: Carefully examine the grid for any visible cracks, chips, or breaks. Pay attention to the connections between the grid lines and the area around them.
  2. Physical Inspection: Gently run your fingers along the grid lines to feel for any irregularities. If you notice any rough or damaged spots, make a note of their location.
  3. Electrical Testing: Use a multimeter to test the electrical continuity of the grid lines. If any section of the grid fails to show continuity, it indicates a break in the circuit.
  4. Thermal Testing: Apply heat to the grid using a heat gun or hairdryer. Observe if the entire grid heats up uniformly. Any cold spots may indicate a damaged or disconnected section.

Taking the time to thoroughly inspect the window grid for damage will help you identify any issues and determine the necessary repairs.

Identifying Broken Connections

Inspect the connections between the grid lines to identify any broken connections. When troubleshooting a heated rear window that is not working, it is important to determine if there are any damaged connections within the window grid. Start by visually inspecting the grid lines for any obvious breaks or gaps. Look for any signs of corrosion or loose connections as well. If you notice any broken connections, you will need to repair them in order to restore the functionality of the heated rear window. 

There are several repair options available, such as using a conductive adhesive or soldering the broken connections. To ensure accuracy, you can also use testing methods like a multimeter to check for continuity along the grid lines. By identifying and repairing any broken connections, you can successfully troubleshoot and fix a heated rear window that is not working.

Seeking Professional Help and Repair Options

If you have followed the troubleshooting steps for the switch and control module and are still unable to resolve the issue with your heated rear window, it is recommended that you seek professional help or explore repair options. While DIY solutions can be cost-effective, attempting to fix the problem yourself may not always be the best option. Professional technicians have the expertise and specialized tools to accurately diagnose and repair the issue. 

They can also provide you with an estimate of the repair costs, allowing you to make an informed decision. Keep in mind that the cost of repairs may vary depending on the specific problem and the make and model of your vehicle. Ultimately, seeking professional help ensures that the heated rear window is fixed correctly and can save you time, effort, and potential further damage.

Final Thoughts

Troubleshooting a heated rear window not working involves checking the fuse and relay, testing the window grid for damage, inspecting the wiring and connectors, and troubleshooting the switch and control module. If the issue persists, it is recommended to seek professional help and explore repair options.