How to Check and Add Tesla Model S Battery Coolant

How to Check and Add Tesla Model S Battery Coolant – Electric cars are famous for not needing maintenance like internal combustion cars or hybrid cars. There are many things that we no longer need to pay attention to, starting from changing engine oil, transmission oil, and axle oil for example. However, there are still some things that you need to pay attention to when you own an electric car, especially the Tesla Model S. This time we will discuss maintaining and adding battery coolant and brake fluid to the Tesla Model S.

How to Check and Add Tesla Model S Battery Coolant

In the following section we will start from maintenance, checking battery coolant and brake fluid. After that, we will discuss the types of battery coolant and brake fluid that are suitable for the Tesla Model S.

Removing the Maintenance Panel

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To check fluid levels, remove the maintenance panel:

  1. Pull the rear edge of the maintenance panel upward to release the five clips that hold the panel in place.
  2. Maneuver the maintenance panel toward the windshield to remove it.

How to Check and Add Tesla Model S Battery Coolant

Caution: The maintenance panel protects the front trunk from water. When reattaching, make sure it is fully seated.

Checking Battery Coolant

If the quantity of fluid in the cooling system drops below the recommended level, the instrument panel displays a warning message. Stop Model S as soon as safety permits and contact Tesla.

Fluid Level Check

Tesla checks the Battery coolant level at the regularly scheduled maintenance intervals. On a single motor Model S, you can check it yourself. To do so, park Model S on level ground. When Model S is cool, remove the maintenance panel.

How to Check and Add Tesla Model S Battery Coolant

Check the fluid level visually by looking at the outside marks on the side of the reservoir. DO NOT REMOVE THE FILLER CAP AND DO NOT ADD FLUID. Doing so can result in damage not covered by the warranty.

The fluid level should be between the MIN and the MAX marks. If you notice that the fluid level has dropped significantly, contact Tesla before using Model S.

Topping Up the Battery Coolant

Under no circumstances should you add coolant. If the instrument panel 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 type of G-48 ethylene-glycol coolant (HOAT). Contact Tesla for more specific information about the coolant.

Checking Tesla Model S 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.

How to Check and Add Tesla Model S Battery Coolant The Brake indicator on the instrument panel 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.

 

Fluid Level Check

Tesla checks the brake fluid level at the regularly scheduled maintenance intervals. To check it yourself, park Model S on level ground. When Model S is cool, remove the maintenance panel.

How to Check and Add Tesla Model S Battery Coolant

Check the fluid level visually by looking at the outside marks on the side of the reservoir without removing the filler cap.

The brake fluid level should always be between the MIN and the MAX marks.

Note: Although brake fluid level drops slightly during normal use as a result of brake pad wear, it should not drop below the MIN mark.

Topping Up the Brake Fluid

Do not top up your brake fluid. Tesla service does this when you bring Model S in for regular servicing. The following instructions are provided for information purposes and future reference only:

  1. Clean the filler cap before removing to prevent dirt from entering the reservoir.
  2. Unscrew the cap and remove.
  3. Top up the reservoir to the MAX mark using brake fluid meeting DOT3 specifications.
  4. Replace the filler cap.

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.
  • 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.

Topping Up Washer Fluid

The only reservoir into which you can add fluid is the washer fluid reservoir located under the front trunk. When the level is low, a message displays on the instrument panel.

Do not use formulated washer fluids that contain water repellent or bug wash. These fluids can cause streaking, smearing, and squeaking or other noises.

Operate the washers periodically to check that the nozzles are clear and properly directed. To top up washer fluid:

  1. Clean the filler cap before opening to prevent dirt from entering the reservoir.
  2. Open the filler cap.
  3. Fill the reservoir until the fluid level is visible just below the filler neck.
  4. Replace the filler cap.

How to Check and Add Tesla Model S Battery Coolant

Note: Some national or local regulations restrict the use of Volatile Organic Compounds (VOCs). VOCs are commonly used as antifreeze in washer fluid. Use a washer fluid with limited VOC content only if it provides adequate freeze resistance for all climates in which you drive Model S.

Caution: Under no circumstances do you need to inspect or top up other fluid reservoirs. Two additional fluid reservoirs are located next to the washer fluid, but underneath the maintenance panel. In the unlikely event that you see a message on the instrument panel that one of these fluid levels is low, stop Model S as soon as safe to do so, and contact Tesla.

Caution: Do not spill washer fluid on body panels. Doing so can cause damage. Wipe up spills immediately and wash the affected area with water.

Warning: In temperatures below 4° C, use a washer fluid with antifreeze. In cold weather, using a washer fluid without antifreeze can impair visibility through the windshield. 

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