If you’ve been hearing a sloshing water sound from your Toyota Highlander lately, you’re not alone. Many Highlander owners have reported this common issue, and it can be a frustrating and concerning problem.
The sound is often described as a splashing or gurgling noise that seems to be coming from the front or rear of the vehicle. While it’s not a serious issue, you should address the problem as it can be a sign of a more significant problem.
The sloshing water sound in a Toyota Highlander is likely caused by a faulty water pump or a leak in the engine coolant system. To solve the issue, you have to inspect and repair the water pump and coolant system.
In this guide, we’ll explore the Toyota Highlander makes sloshing water sound: causes and solutions. This will help you resolve the issue and get back to enjoying your drive.
Why Should You Fix Toyota Highlander Makes Sloshing Water Sound?
If you own a Toyota Highlander and hear a sloshing water sound while driving, you should fix the problem immediately. This sound indicates that water is not draining properly from the vehicle’s HVAC system, which can lead to serious damage and potential safety hazards.
Firstly, the build-up of water in the system can cause mould and mildew to grow, leading to unpleasant odours and potential health risks. The excess moisture can also damage electrical components and cause corrosion, leading to costly repairs.
Moreover, the water can also leak onto the vehicle’s floor and cause damage to the carpet and insulation, leading to a musty smell and expensive repairs. The sloshing water sound can also distract the driver and potentially cause accidents.
Fixing the sloshing water sound in your Toyota Highlander is important for both your health and safety, as well as the longevity and maintenance of your vehicle.
Toyota Highlander Makes Sloshing Water Sound: Causes
Toyota Highlanders are known for their smooth and quiet ride, but some owners have reported hearing a sloshing water sound coming from their vehicles. This sound can be unsettling and lead to concerns about potential car systems issues. Here are some possible causes of sloshing water sounds in Toyota Highlanders.
1. Clogged Drainage System
A clogged drainage system is one possible cause of a sloshing water sound in a Toyota Highlander. This can happen when the drainage tubes become blocked, preventing water from draining properly.
As a result, water can accumulate in the vehicle’s body cavities, leading to a sloshing sound. The drainage system may become clogged due to debris or dirt build-up, which can be cleared by flushing the tubes with water.
2. Air in the Cooling System
Air in the cooling system can also cause a sloshing water sound in a Toyota Highlander. This can happen when the coolant level is low, leading to air bubbles in the system. As the vehicle moves, the air bubbles move through the system, creating a sloshing sound.
3. Damaged or Loose Components
Another potential cause of a sloshing water sound in a Toyota Highlander is damaged or loose components. This can include the fuel tank, brake fluid reservoir, or other parts that contain fluids. If these components are damaged or not properly secured, they can move around while the vehicle is in motion, causing a sloshing sound.
4. Leaking Sunroof or Door Seals
A leaking sunroof or door seal can also lead to a sloshing water sound in a Toyota Highlander. Water entering the vehicle through a damaged or worn seal can accumulate in the vehicle’s body cavities, creating a sloshing sound.
5. Condensation in the Air Conditioning System
Condensation in the air conditioning system can also cause a sloshing water sound in a Toyota Highlander. This can happen when the system is not used frequently, allowing moisture to accumulate in the air conditioning components. The water moves through the system as the vehicle moves, creating the sloshing sound.
Signs of the Sloshing Water Sound Issue on Toyota Highlander
The sloshing water sound in a Toyota Highlander is a common issue that can cause several problems if not fixed. Here are the symptoms and signs that you might experience if your Toyota Highlander is experiencing this problem.
- Unpleasant Odor: One of the most common signs of the sloshing water sound issue is an unpleasant odour coming from the vehicle’s air conditioning system. This smell is usually caused by the buildup of mold and mildew in the HVAC system water accumulation.
- Wet Carpeting: Another symptom of the sloshing water sound issue is wet carpeting in the vehicle. This happens when water leaks from the air conditioning system onto the vehicle’s floor. Wet carpeting can lead to mould and mildew growth, which can cause an unpleasant odour and health problems.
- Reduced Cooling Efficiency: A clogged HVAC system due to water accumulation can reduce the cooling efficiency of the air conditioning system, leading to a less comfortable driving experience.
- Electrical Issues: The water accumulation in the HVAC system can also cause electrical issues in the vehicle. Water can damage electrical components, leading to the failure of the vehicle’s air conditioning system or other electrical parts.
- Distracting Noise: The sloshing water sound distracts the driver, which can lead to safety concerns. The sound can be loud and persistent, causing discomfort and distraction for the driver.
Solutions to the Sloshing Water Sound Issue in Toyota Highlanders
If you are experiencing a sloshing water sound in your Toyota Highlander, several solutions can help address the issue. Here are some possible solutions to consider.
Solution 1: Flushing the Drainage System
Flushing the drainage tubes with water if a clogged drainage system is causing the sloshing sound. This can help clear any debris or dirt buildup. To do this, locate the drainage tubes and carefully insert a water hose to flush out any blockages. A mechanic should inspect the drainage system for any additional problems if this does not resolve the issue.
Solution 2: Topping off Coolant
Topping off the coolant level can help solve the issue if the air in the cooling system is the issue. So, check the owner’s manual for the recommended coolant level and add more. If the coolant level is consistently low, a mechanic should inspect the system for leaks and make any necessary repairs.
Solution 3: Repairing or Replacing Damaged Components
If damaged or loose components are the culprit, a mechanic should inspect the affected parts and make any necessary repairs or replacements. This can include securing loose parts or replacing damaged components. It is important to have a professional diagnose and repair any issues with the vehicle’s systems.
Solution 4: Replacing Leaking Seals
If a leaking sunroof or door seal is the cause of the sloshing sound, the affected seals should be replaced. A mechanic can inspect the seals for damage and replace them as needed. This can prevent water from entering the vehicle and causing further issues.
Solution 5: Running the Air Conditioning System
To prevent condensation buildup in the air conditioning system, it is recommended to run the system regularly. This can help circulate the air and prevent moisture buildup, which can lead to a sloshing sound. Running the air conditioning system regularly can help keep the vehicle’s interior comfortable and cool.
Solution 6: Removing Excess Water
If the sloshing sound persists after trying the above solutions, removing any excess water from the vehicle may be necessary. You can easily do that using a wet-dry vacuum to suction out any water from the body cavities or floor mats. If water is found in the vehicle’s electronics, it is important to have a professional inspect the affected systems for any damage.
Preventing Tips for the Sloshing Water Sound Issue in Toyota Highlanders
The sloshing water sound issue in Toyota Highlanders is a common problem that can be prevented with proper maintenance and care. Here are some tips to prevent this issue from occurring.
- Regular Maintenance: Regular maintenance of the air conditioning system is essential to prevent the buildup of water in the HVAC system. Regularly inspect the system for any clogs or debris that can cause water accumulation.
- Replace the Cabin Air Filter: The cabin air filter helps prevent debris and dust from entering the HVAC system. In that case, regularly replace the cabin air filter to ensure proper airflow and prevent clogs that can cause water accumulation.
- Use the Recirculation Mode: When driving in humid conditions or during rain, switch the air conditioning system to recirculation mode. This will prevent humid air from entering the system and causing water accumulation.
- Avoid Parking in Humid or Flooded Areas: Parking in humid or flooded areas can cause water to accumulate in the HVAC system. Avoid parking in these areas if possible.
- Inspect the Drain Hose: The drain hose in the air conditioning system helps remove water from the HVAC system. Regularly inspect the drain hose for any clogs or leaks that can cause water accumulation.
Final Words
From the discussion above, you may understand Toyota Highlander makes sloshing water sound: causes and solutions. This is primarily due to the blockage of the drain hose or the air conditioner condensation pan itself.
To get rid of this problem, you need to unclog the drain hose by using a vacuum cleaner or a bent wire. You can also use a wet/dry shop vacuum to clean the condensation pan.
In addition, you can use a blow dryer to blow away any debris from the drain hose. By following these simple solutions, you can easily get rid of the sloshing water sound in your Toyota Highlander.
