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Old 02-03-2023, 08:08 PM   #58 (permalink)
Isaac Zachary
High Altitude Hybrid
 
Join Date: Dec 2020
Location: Gunnison, CO
Posts: 2,083

Avalon - '13 Toyota Avalon HV
90 day: 40.45 mpg (US)

Prius - '06 Toyota Prius
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Quote:
Originally Posted by JSH View Post
The purpose of replacing the brake fluid is two-fold.
A. Brake fluid absorbs water of time and that moisture can cause corrosion and can also boil at high temps and cause brake failure.
B. Old brake fluid will gum up the ABS module - especially for those that never activate the ABS and cycle fresh fluid through. The more complicated the ABS / stability control system the more important it is to replace the brake fluid as recommended in the service manual.
Yep!

And with brake actuator module replacements costing sometimes over $2,000 on hybrids and EV's, I'd rather just change the fluid periodically from time to time instead of gumming it up or corroding it.
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