The maintenance minder section says:Specified fluid: Honda Heavy Duty Brake Fluid DOT 3
If a Maintenance Minder Indicator does not appear more than 36 months after the display for item 7 is reset, change the brake fluid every 3 years.
Why is brake fluid replacement required on some vehicles but not on others? I had a 2005 Toyota Sienna for 13 years, 190K miles. Replacing fluid not required, I never replaced it, never had any problems.IS 21000 miles a valid brake fluid change interval. MM states it is
IMO you were lucky. Metal brake lines can and will rust (from the inside, visual inspections won't work).3 years, 190K miles. Replacing fluid not required