To check fluid levels, remove the maintenance panel:
Caution: The maintenance panel protects the front trunk from water. When reattaching, make sure it is fully seated.
Checking Battery Coolant
Your Battery coolant should not need to be replaced for the life of your vehicle under most circumstances. However, if the quantity of fluid in the cooling system drops below the recommended level, the touchscreen displays a warning message. Stop driving Model 3 as soon as safety permits and contact Tesla.
Fluid Level Check
DO NOT REMOVE THE FILLER CAP AND DO NOT ADD FLUID. Doing so can result in damage not covered by the warranty.
Do Not Top Up Battery Coolant
Warning: Battery coolant can be hazardous and can irritate eyes and skin.
Under no circumstances should you remove the filler cap and/or add coolant.
If the touchscreen warns you that the fluid level is low, contact Tesla immediately.
To maximize the performance and life of the Battery, the cooling system uses a specific mixture of G-48 ethylene-glycol coolant (HOAT). Contact Tesla for more specific information about the coolant.
Checking Brake Fluid
Warning: Contact Tesla immediately if you notice increased movement of the brake pedal or a significant loss of brake fluid.
Driving under these conditions can result in extended stopping distances or complete brake failure.
A red brake indicator on the
touchscreen alerts you if the
quantity of fluid in the brake
reservoir drops below the
recommended level. If it displays
while driving, stop as soon as safety
permits by gently applying the
brakes. Do not continue driving.
Contact Tesla immediately.
Topping Up the Brake Fluid
Do not top up your brake fluid. The following instructions are provided for information purposes and future reference only:
Warning: Only use new fluid from a sealed air-tight container. Never use previously used fluid or fluid from a previously opened container-fluid absorbs moisture which decreases braking performance.
Warning: Brake fluid is highly toxic. Keep containers sealed and out of the reach of children. In the event of accidental consumption, seek medical attention immediately.
Caution: Brake fluid damages painted surfaces. Immediately soak up any spills with an absorbent cloth and wash the area with a mixture of car shampoo and water.