Lexus IS 350C 2012 Manual page 432

4-3. Do-it-yourself maintenance
CAUTION
When filling the reservoir
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Take care because brake fluid can harm your hands or eyes and damage painted
surfaces.
If fluid gets in your eyes, flush your eyes with clean water immediately.
If you still experience discomfort, see a doctor.
NOTICE
If the fluid level is low or high
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It is normal for the brake fluid level to go down slightly as the brake pads wear or
when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious problem.
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