why does my Honda Accord 9th Generation (2013-2017) have condensation on the inside of windows?

Honda Accord Eleventh Generation (2023-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

498 words

Problem Statement

Learn how to diagnose and fix condensation inside windows of Honda Accord 9th Generation (2013-2017). Step-by-step guide with symptoms and solutions.

Affected Component

HVAC

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure ignition is off to prevent airbag deployment.
•Be cautious of sharp edges on glass.
•Disconnect battery before working on electrical systems.

Symptoms

•Foggy windows, especially in cold weather
•Persistent moisture accumulation on glass surfaces
•Musty odor inside the cabin
•Possible water pooling in footwells
•Difficulty defogging windows using the HVAC system

Diagnostic Steps

1
Inspect cabin air filter for clogs or dirt buildup.
2
Check for leaks in door seals or window seals.
3
Examine the windshield for cracks or improper installation.
4
Test the HVAC system for proper operation, focusing on the defrost function.
5
Scan for any moisture sensors or related fault codes using an OBD-II scanner.

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

•Screwdriver
•OBD-II scanner

Parts Required

•Cabin air filter
•Door/window seals (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect cabin air filter for clogs or dirt buildup.
2
Check for leaks in door seals or window seals.
3
Examine the windshield for cracks or improper installation.
4
Test the HVAC system for proper operation, focusing on the defrost function.
5
Scan for any moisture sensors or related fault codes using an OBD-II scanner.

Solution

1. Preparation

Gather tools and parts needed for inspection and repair.
Ensure the vehicle is parked in a well-ventilated area.
Disconnect the battery for safety if working on electrical components.

2. Inspect Cabin Air Filter

Sub-steps:
1. Locate the cabin air filter access panel (typically under the glove compartment).
2. Remove the panel using a screwdriver.
3. Extract the cabin air filter and inspect it for dirt or blockage.
4. Replace with a new filter if it is dirty.
Tools Required: Screwdriver
Safety Warnings: Ensure ignition is off to prevent airbag deployment.

3. Check Door and Window Seals

Sub-steps:
1. Visually inspect all door seals and window seals for cracks or damage.
2. Run your fingers along the seals to check for gaps.
3. Replace any damaged seals with OEM parts.
Tools Required: None
Safety Warnings: None

4. Examine Windshield

Sub-steps:
1. Check for cracks or gaps around the windshield.
2. If cracks are present, consider professional repair or replacement.
3. Ensure the windshield is properly seated and sealed.
Tools Required: None
Safety Warnings: Be cautious of sharp edges on glass.

5. Test HVAC System

Sub-steps:
1. Start the engine and turn on the HVAC system.
2. Set the system to defrost mode and observe airflow.
3. Check for any unusual noises or lack of airflow.
4. Replace any malfunctioning components (e.g., blower motor, HVAC control unit).
Tools Required: OBD-II scanner (if testing for faults)
Safety Warnings: None