my Honda Accord 9th Generation (2013-2017) has condensation on the inside of the windows

Honda Accord Eleventh Generation (2023-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

564 words

Problem Statement

Learn how to diagnose and fix condensation inside windows in Honda Accord 9th Generation. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.

Symptoms

•Visible condensation on interior windows, especially during colder weather
•Persistent fogging of windows when using the vehicle
•Musty or damp smell inside the cabin
•Possible water pooling in footwells or cargo area
•Reduced visibility while driving due to fogged windows

Diagnostic Steps

1
Inspect weather stripping around doors and windows for signs of wear or damage.
2
Check for any leaks in the windshield or rear window seals.
3
Test the cabin air filter for blockages or signs of moisture.
4
Examine the HVAC system for proper operation, including the defrost and AC settings.
5
Verify that the drain holes in the windshield cowl and door panels are clear.
6
Use a hygrometer to measure humidity levels inside the cabin.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Flathead screwdriver
•Trim removal tool
•Socket set
•Small wire or pipe cleaner
•Hygrometer (optional)

Parts Required

•Weather stripping (if damaged)
•Cabin air filter

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Diagnostic Steps

1
Inspect weather stripping around doors and windows for signs of wear or damage.
2
Check for any leaks in the windshield or rear window seals.
3
Test the cabin air filter for blockages or signs of moisture.
4
Examine the HVAC system for proper operation, including the defrost and AC settings.
5
Verify that the drain holes in the windshield cowl and door panels are clear.
6
Use a hygrometer to measure humidity levels inside the cabin.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked in a dry area.
Disconnect the battery if working on electrical components of the HVAC system.

2. Inspect and Replace Weather Stripping

Tools Required: Flathead screwdriver, trim removal tool, adhesive (if needed).
Remove any damaged weather stripping using a flathead screwdriver or trim removal tool.
Clean the surface where the new weather stripping will be applied.
Install new weather stripping by pressing it firmly into place, ensuring a tight seal.

3. Check and Replace Cabin Air Filter

Tools Required: Socket set (if necessary for cover removal).
Locate the cabin air filter compartment, typically behind the glove box.
Remove the glove box or cover to access the filter.
Take out the old filter and inspect for moisture or blockages.
Insert a new cabin air filter, ensuring it is oriented correctly according to airflow direction.

4. Clear Drain Holes

Tools Required: Small wire or pipe cleaner.
Locate the drain holes in the windshield cowl and door panels.
Use a small wire or pipe cleaner to clear any debris obstructing the drains.
Pour a small amount of water over the area to verify that it drains properly.

5. Test HVAC System

Turn on the vehicle and set the HVAC system to defrost.
Ensure the AC is activated to help reduce humidity levels.
Monitor operation for any unusual noises or failure to defrost windows effectively.