Many Tesla owners have reported a musty or moldy odor in their cars during or after rain. The foul smell in Tesla cars during rain is probably due to condensation build-up in the AC system.
In this article, we will explore what you need to know when Tesla smells terrible when it rains.
What are the Symptoms of Tesla Cars Smells Bad?
Many Tesla owners have reported experiencing a foul odor in their cars during or after rain. Here are some common symptoms that Tesla might be experiencing this issue:
Musty or Moldy Odor
The most obvious symptom is a musty or moldy odor coming from the air vents when you turn on the AC or when it’s humid or raining outside.
Worsening Smell Over Time
The smell may get worse over time if the issue is not addressed.
Smell goes Away After Running AC
The smell may go away after running the AC for a few minutes.
Smell is Worse When Recirculate Cabin Air is on
The smell may be worse when the Recirculate Cabin Air option is turned on.
Smell is Worse During or After Rain
The smell may be more noticeable during or after rain.
Smell Returns Even After Cleaning
Even if you clean your car regularly, the smell may return if the underlying issue is not addressed.
What are the Causes of Tesla Cars Smells Bad While It Raining?
Here are some common causes that Tesla might be the reason for experiencing this issue:
Condensation Build-up in the AC System
The most likely cause of the foul smell in Tesla cars during rain is condensation build-up in the AC system.
When the air conditioning is used, moisture from the air condenses on the evaporator coil in the AC system. If this moisture is not adequately drained or evaporated, it can create a damp environment that is ideal for the growth of bacteria and mold.
Mold and Bacteria Growth
The growth of mold and bacteria in the AC system can cause a foul odor in the car. These microorganisms thrive in damp environments and can produce unpleasant smells when they multiply.
Cabin Air Filter
Another potential cause of the foul smell in Tesla cars during rain is a dirty cabin air filter. The cabin air filter is responsible for filtering the air that enters the vehicle through the ventilation system.
If the cabin air filter becomes clogged with dirt, dust, or other debris, it can reduce airflow and create a damp environment that is conducive to mold and bacteria growth.
Leaves or Other Debris in the Air Intake
Leaves or other debris that have accumulated in the air intake for the HVAC system can also cause a bad smell in the car. These materials can become damp when exposed to rain and create a musty odor when they begin to decompose.
Plugged Drain
A plugged drain in the AC system can also cause a bad odor in the car. If water is not able to drain properly from the AC system, it can accumulate and create a damp environment that is ideal for mold and bacteria growth.
What are the Possible Solutions for Tesla Cars Smells Bad While It Raining?
Here are some possible solutions that Tesla might help you fix this issue:
Step-1: Turn on the Heat to Dry Out Condensation
One way to prevent condensation build-up in the AC system is to turn on the heat for about one minute after using the air conditioning.
Turning on the heat will help dry out any moisture that has accumulated on the evaporator coil and prevent mold and bacteria growth.
Step-2: Turn Off Recirculate Cabin Air Option
Another way to prevent condensation build-up in the AC system is to turn off the Recirculate Cabin Air option in the Tesla climate control system.
Turning off the Recirculate Cabin Air option will allow fresh air to enter the car and help dry out any moisture that has accumulated on the evaporator coil.
Step-3: Replace Cabin Air Filter
If you suspect that a dirty cabin air filter is causing a bad smell in your car, you should replace it with a new one. This will help improve airflow through the ventilation system and prevent mold and bacteria growth.
Step-4: Clean Air Intake
If leaves or other debris have accumulated in your car’s air intake, you should clean it out to prevent musty odors. This will help improve airflow through your HVAC system and prevent mold and bacteria growth.
Step-5: Unplug Drain
If you suspect that a plugged drain is causing a bad smell in your car, you should have it checked and cleared by a professional.
Doing that will help prevent water from accumulating in the AC system and create a damp environment that is conducive to mold and bacteria growth.
Step-6: Use an Odor Eliminator
If none of the above fixes work, try using an odor eliminator to get rid of the bad smell in your car. These products are designed to neutralize odors and can be effective at eliminating musty or moldy smells.
What is the Replacement Cost and Scheduled Replacement Time of Tesla’s Air Filter?
To improve the longevity and efficiency of your air conditioning system, it’s advisable to have the A/C desiccant bag replaced during air conditioning service. Following a regular air conditioning service schedule is highly recommended:
| Tesla Vehicle | Cost | Replacement Schedule |
| Tesla Model S | $34 | Every 3 years |
| Tesla Model 3 | $17 | Every 2 years |
| Tesla Model X | $34 | Every 3 years |
| Tesla Model Y | $17 | Every 2 years |
Note: It is recommended to replace the cabin air filter in Model S and Model X vehicles produced between 2012-2020 every 2 years.
What is the Servicing Schedule for Tesla’s Air Conditioning?
To ensure that your air conditioning system operates efficiently and lasts longer, it is advisable to have the A/C desiccant bag replaced by a professional air conditioning service. It is suggested that you adhere to the recommended air conditioning service schedule:
| Tesla Vehicle | Servicing Schedule |
| Tesla Model S | Replace your A/C desiccant bag every 3 years. |
| Tesla Model 3 | Replace the A/C desiccant bag every 4 years. |
| Tesla Model X | Replace your A/C desiccant bag every 3 years. |
| Tesla Model Y | Replace your A/C desiccant bag every 4 years. |
Note: It is recommended to replace your A/C desiccant bag every 6 years for Model 3 produced in 2017-2021 if it doesn’t have a heat pump.
Note: It is recommended to replace your A/C desiccant bag every 2 years for Model S vehicles produced in 2012-2020 and every 4 years for Model X vehicles built in 2012-2020.
Related Post: Tesla Cabin Overheat Protection: Keeping Your Car Safe and Comfortable
Frequently Asked Questions (FAQs)
How can I prevent bad odors during rain in my Tesla?
Regularly inspect and clean your car’s interior, replace cabin air filters, and ensure there are no water leakages.
Can using specific cleaning products help eliminate the odor in my Tesla car?
Using appropriate interior cleaners and deodorizers can help mitigate bad smells.
Will the bad smell affect the car’s performance or safety?
The smell itself should not impact the car’s performance or safety, but addressing the root cause is essential for comfort and health.
Is the bad smell a common problem among all Tesla car models?
The smell issue is only sometimes reported among all Tesla models; it might vary based on individual car conditions.
Can extreme weather conditions worsen the smell problem in Tesla cars?
Extreme humidity or heavy rain can exacerbate existing issues like mold growth or water leaks.
