2022 Tesla Model S Fluid Type Specs

Quick reference

Fluid	Type/Spec	Capacity
Engine Oil	N/A	N/A
Coolant	Tesla Spec (Proprietary Glycol-based)	~15-20 Liters (Total System)
Transmission Fluid	N/A (Single-speed direct drive)	N/A
Inverter/Motor Coolant	Tesla Spec (Proprietary Glycol-based)	Integrated with main coolant loop
Brake Fluid	DOT 4	~1 Liter
Washer Fluid	Commercial Windshield Washer Fluid	~4.5 Liters

Engine Oil

Your 2022 Tesla Model S is an all-electric vehicle and does not use traditional engine oil. Therefore, there are no engine oil specifications or capacities to list for this model.

Engine Coolant

While the Tesla Model S does not have a traditional internal combustion engine, it utilizes a sophisticated thermal management system that requires a specific coolant. This system cools the battery, power electronics (inverters), and motors, as well as providing cabin heating and cooling. Tesla uses a proprietary glycol-based coolant specifically formulated for its vehicles. It is crucial to use only the genuine Tesla coolant to maintain the integrity and efficiency of the thermal management system.

Mixing different types of coolants, especially with dissimilar chemistries (e.g., OAT with HOAT or even other glycol-based coolants not approved by Tesla), can lead to corrosion, reduced cooling efficiency, and potential damage to critical components. Always verify the exact coolant specification in your owner's manual or through official Tesla service documentation. The total system capacity can range, but typically the entire thermal system holds approximately 15-20 liters.

Transmission Fluid

The 2022 Tesla Model S uses a single-speed direct drive system for its electric motors, which does not utilize traditional multi-speed automatic or manual transmission fluid. There is no user-serviceable transmission fluid to check or replace. Lubrication for the reduction gearboxes is typically a lifetime fill, or serviced only by Tesla if an issue arises. Never attempt to add or change any "transmission fluid" in your Model S.

Inverter/Motor Coolant

Similar to the main engine coolant, the inverter and electric motors in your Tesla Model S are liquid-cooled. This cooling system is integrated with the main thermal management loop and uses the same proprietary Tesla glycol-based coolant. The fluid circulates to dissipate heat generated by the high-voltage components, ensuring optimal operating temperatures and performance. As with the main coolant, it is vital to use only the specified Tesla coolant and never substitute with aftermarket products. Deviating from the factory specifications can lead to overheating, reduced performance, and costly repairs.

Brake Fluid

For the 2022 Tesla Model S, DOT 4 brake fluid is specified. Brake fluid is hygroscopic, meaning it absorbs moisture over time, which can lower its boiling point and lead to a spongy pedal feel or, in extreme cases, brake fade. Tesla recommends periodic inspection and replacement of the brake fluid. Always use fresh, sealed DOT 4 fluid from a reputable manufacturer to ensure optimal braking performance and safety. Never mix DOT 4 with DOT 5 (silicone-based) fluid, as they are incompatible and can cause severe damage to the braking system. The typical capacity for a full flush and fill is around 1 liter.

Washer Fluid

The 2022 Tesla Model S uses standard commercial windshield washer fluid. It is recommended to use an all-season fluid that offers freeze protection suitable for your local climate. Many quality washer fluids also contain detergents to help remove bugs, road grime, and other contaminants effectively. Avoid using plain water, especially in freezing temperatures, as it can freeze in the reservoir, lines, or nozzles, causing damage. The washer fluid reservoir typically holds about 4.5 liters.

Differential Fluid (Front and Rear)

The 2022 Tesla Model S has reduction gearboxes for the front and rear drive units. These gearboxes are sealed units that do not typically require user-serviceable fluid changes. The fluid used within these units is a specialized lubricant, often referred to as "gear oil" or "reduction gear lubricant," specific to electric vehicle powertrains. This is a lifetime fill and should only be serviced by trained Tesla technicians if a problem is detected. Do not attempt to add or change differential fluid yourself, as incorrect fluid or procedures can cause significant damage.

Power Steering Fluid

The 2022 Tesla Model S utilizes an electric power steering (EPS) system. This system does not use hydraulic fluid like traditional power steering systems. Therefore, there is no power steering fluid to check or replace in your Model S.

DEF (Diesel Exhaust Fluid)

Your 2022 Tesla Model S is an all-electric vehicle and does not have an internal combustion engine or exhaust system that requires Diesel Exhaust Fluid (DEF). Therefore, there is no DEF specification for this model.

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