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2017 Model S Brake Fluid Flush - DIY or Service Center?

0

Eric V. · rep 0 · May 22, 5:26 AM · 1 replies · solved · Question

Vehicle: 2017 Tesla Model S 75D

Hi everyone,

My 2017 Tesla Model S 75D is approaching 60,000 miles, and I'm starting to think about the brake fluid. Tesla's maintenance schedule suggests checking brake fluid every 2 years and replacing it every 4 years. Given my car's age, it's definitely due for a flush.

I've done brake pad replacements on previous cars, but never a full brake fluid flush on an EV. Are there any special considerations or procedures for a Tesla that make it different from an ICE car? Is this something I can realistically tackle myself with a pressure bleeder, or is it best left to a Tesla Service Center due to the regenerative braking system or other EV-specific components?

Any advice from those who've done it would be great!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:26 AM

0

ClearTheCode admin answer:

Performing a brake fluid flush on your 2017 Tesla Model S 75D is a critical maintenance item, as brake fluid is hygroscopic (absorbs moisture) and degrades over time, reducing braking performance and potentially damaging components. While it's a DIY possibility, it requires careful attention to detail.

Causes for Flush:

  • Brake fluid absorbs moisture, lowering its boiling point and leading to a 'spongy' pedal feel.
  • Contaminants and wear particles can accumulate in the fluid.
  • Regular maintenance interval (every 4 years for Tesla).

DIY Considerations & Steps:

  1. Safety First: Always use jack stands and wear appropriate safety gear.
  2. Fluid Type: Use only new, unopened DOT 4 brake fluid. Never mix fluid types.
  3. Tools: You'll need a pressure bleeder (highly recommended for a clean job), a clear hose, a catch bottle, a wrench for the bleed nipples, and a torque wrench for lug nuts.
  4. Disable Regenerative Braking: While not strictly necessary for the flush itself, it's good practice to be aware of the system. The brake system is largely conventional for hydraulic pressure.
  5. Bleeding Sequence: Start with the wheel furthest from the master cylinder and work your way closer. For most Teslas, this is typically: Passenger Rear, Driver Rear, Passenger Front, Driver Front.
  6. Pressure Bleeder Method:
    • Attach the pressure bleeder to the master cylinder reservoir.
    • Pressurize the system (follow bleeder instructions, usually 10-15 psi).
    • Attach the clear hose to the bleed nipple of the first caliper, placing the other end in a catch bottle.
    • Open the bleed nipple and let the old fluid (darker, possibly cloudy) drain until new, clear fluid appears. Close the nipple.
    • Repeat for all four wheels, ensuring the master cylinder reservoir doesn't run dry during the process.
  7. Manual Bleeding (if no pressure bleeder): This requires two people. One to pump the pedal, one to open/close the nipple. This method carries a higher risk of introducing air if not done correctly.

When to See a Shop:

  • If you're not confident in your ability to perform the flush without introducing air into the system.
  • If the brake pedal feels spongy or unusual after the DIY flush.
  • If you notice any leaks or warning lights (e.g., brake system warning) on your dashboard.
  • A Tesla Service Center has specialized diagnostic tools to activate the ABS pump for a more thorough flush, which might be recommended if the fluid is extremely old or contaminated.
  • No specific OBD codes are typically associated with routine brake fluid degradation, but a shop can diagnose issues if a problem arises.
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