2024 Tesla Model S Coolant Capacity & Type

The 2024 Tesla Model S cooling system capacity is approximately 11.6 to 12.7 liters (12.2 to 13.4 quarts) depending on the configuration.

Quick Answer

• Total Cooling System Capacity: 11.6 - 12.7 liters (12.2 - 13.4 quarts)
• OEM Coolant Spec: Tesla G-48 (Blue, HOAT - Hybrid Organic Acid Technology)
• Mix Ratio: 50/50 Prediluted

Capacity by Engine Option

Unlike traditional internal combustion engine vehicles, the Tesla Model S utilizes its cooling system for various components, including the battery, power electronics, and motors. Therefore, capacity can vary slightly based on the specific powertrain configuration (e.g., Long Range vs. Plaid).

Flush Interval

Tesla generally recommends inspecting the coolant level and condition at regular service intervals. However, a full coolant flush and replacement are typically not recommended under normal operating conditions. The Tesla G-48 coolant is a long-life formula designed to last for an extended period. Tesla service manuals suggest replacing the coolant only if it appears contaminated or if a component within the cooling system has been replaced.

For severe duty usage (e.g., frequent track use, extreme climates), it's advisable to consult a Tesla service center for specific recommendations, but a typical flush interval for such a long-life coolant, if it were to be replaced, would be in the range of 100,000 to 150,000 miles or 8 to 10 years.

How to Refill & Bleed

Refilling and bleeding the cooling system on a Tesla Model S requires specific procedures due to its complex electric powertrain and integrated thermal management system. It is generally recommended that coolant service be performed by a certified Tesla service technician.

General Steps (for informational purposes only – professional service recommended):

1. Safety First: Ensure the vehicle is off and completely cooled down. Disconnect the 12V battery to prevent accidental start-up of pumps.
2. Access: Locate the coolant reservoir(s), which might be in different locations depending on the specific cooling loop (e.g., battery, power electronics, drive units).
3. Draining (if applicable): If draining is necessary, it typically involves opening drain plugs on various components. This process is intricate and requires specialized knowledge to ensure all fluid is removed.
4. Refilling: Slowly add the specified Tesla G-48 50/50 prediluted coolant to the reservoir. Tesla systems often require a vacuum fill procedure to ensure all air pockets are removed, especially from the high-voltage battery cooling loop.
5. Bleeding: The Model S cooling system is largely self-bleeding through its integrated pumps and valves when properly refilled. However, a Tesla-specific diagnostic tool is usually required to cycle pumps and open valves to ensure complete air evacuation. There are typically no traditional "bleed screws" in the same way as an ICE vehicle.
6. Inspection: After refilling and cycling, carefully check for any leaks and ensure the coolant level is between the MIN and MAX marks.

Crucial Note: Improperly bleeding the Tesla cooling system can lead to severe damage to critical components like the battery or power electronics. Always refer to the official Tesla service manual or consult a Tesla service center.

Common Cooling System Issues

While Tesla vehicles are known for their advanced engineering, they can still experience cooling system issues, albeit different from traditional gasoline cars:

• Coolant Leaks: Though less common than in ICE vehicles, leaks can occur from hoses, connections, radiators (for power electronics), or even the battery cooling plate. Leaks can be challenging to diagnose due to the complex routing and multiple cooling loops.
• Thermal Management System Software Glitches: The sophisticated thermal management system relies heavily on software. Glitches can lead to improper cooling, affecting battery performance and range, or even triggering warning lights.
• Coolant Pump Failures: Electric coolant pumps circulate fluid through the various loops. Malfunctions can reduce cooling efficiency, impacting battery health and overall vehicle performance.
• HVAC System Issues: The AC system is integrated into the thermal management, and issues within the AC, such as refrigerant leaks or compressor problems, can indirectly affect the overall cooling of other components.
• Battery Degradation due to Suboptimal Cooling: While not a direct "issue" of the cooling system failing, prolonged operation with suboptimal cooling (perhaps due to minor issues or extreme conditions) can contribute to accelerated battery degradation over time.

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