2020 Toyota 4Runner: Service Brakes complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 5 owner complaints for the 2020 Toyota 4Runner that list the service brakes component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11455732 (filed 03/08/2022): “Break problem after letting car sit overnight and coming up to a stop sign or anything slowly pedal goes to the floor if you pump tge pedal the brakes will come back and seem to work fine except when sitting in a drive-through line with your foot on the brake pedal it'll slowly lose brake pressure…”
- NHTSA complaint ODI #11431192 (filed 08/31/2021): “Unknown but not really a "safety issue" in the true sense of the meaning. front brakes. loud squeal from brakes under cold climate conditions. dealership has inspected but nothing found. mentioned nhtsa # 10190453 & tsb #t-tt-0636-20 rev to the service manager but they stated that there is/was no…”
- NHTSA complaint ODI #11374875 (filed 11/16/2020): “While slowly slowing the vehicle down, the brake pedal went completely to the floor and lost all braking. as soon as pedal is brought back up and pumped once or twice, brakes regained function. no warning or safety lights went off. this has occurred 3 different times with 2 different drivers.…”
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 .