Toyota 2012 Highlander Owner's Manual page 448

NOTICE
■
If the fluid level is low or high
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.
Battery
■
Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
■
Checking battery fluid
4-3. Do-it-yourself maintenance
Terminals
Hold-down clamp
Check that the level is between
"UPPER"/"MAX" and "LOWER"/
"MIN".
"UPPER"/"MAX"
"LOWER"/"MIN"
If the fluid level is at or below
"LOWER"/"MIN",
water.
4
add distilled
473