Note: In addition to cooling the interior, the air conditioning compressor also cools the Battery. Therefore, in hot weather, the air conditioning compressor can turn on even if you turned it off. This is normal because the system's priority is to cool the Battery to ensure it stays within an optimum temperature range to support longevity and optimum performance. Also, even when not in use, you may hear Model 3 emit a whining noise or the sound of water circulating. These sounds are normal and occur when the internal cooling systems turn on to support various vehicle functions, such as maintaining the 12V battery and balancing the temperature of the high voltage Battery.
Warning: Contact Tesla immediately if you notice any significant or sudden drop in fluid levels or uneven tire wear.
Fluid Replacement Intervals
Your Battery coolant does not need to be replaced for the life of your vehicle under most circumstances. Brake fluid should be checked every 2 years, replacing if necessary.
Note: Any damage caused by opening the Battery coolant reservoir is excluded from the warranty.
High Voltage Safety
Your Model 3 has been designed and built with safety as a priority. However, be aware of these precautions to protect yourself from the risk of injury inherent in all high-voltage systems:
These labels are there for your safety.
Warning: Always disconnect the charge cable before working underneath Model 3, even if charging is not in progress.
Warning: Keep your hands and clothing away from cooling fans. Some fans operate even when Model 3 is powered off.
Warning: Some fluids (battery acid, Battery coolant, brake fluid, windshield washer additives, etc.) used in vehicles are poisonous and should not be inhaled, swallowed, or brought into contact with open wounds. For your safety, always read and follow instructions printed on fluid containers.