2021 Toyota Tacoma: Service Brakes complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 12 owner complaints for the 2021 Toyota Tacoma that list the service brakes component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11750147 (filed 07/13/2026): “Brake master cylinder is leaking in the interior of truck on driver side floor mat. oil is come from brake master cylinder seal.…”
- NHTSA complaint ODI #11722917 (filed 03/09/2026): “When i push the brake pedal, it goes to the floor. i have had the brakes and master cylinder replaced. after about one month the brakes started failing again. i am going to take it back to the mechanic to have them re-evaluate the brakes. no kind of official has inspected my truck. i have been havin…”
- NHTSA complaint ODI #11700509 (filed 11/20/2025): “Truck is under 20 thousand miles right front brake shoes are loose and not in place. the whole brake assembly is completely rusted .brake lines are leaking.…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Moderate
Pads and rotors are a common DIY job with hand tools and a jack; ABS/hydraulic faults need a scan tool. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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Sources
Page last updated .