NHTSA Complaint #11583044 — 2020 TOYOTA RAV4

The ABS and brake booster systems failed, and my traction control was not working as intended. Every light related to the braking system came on all at once and the ability to break became slowed, could not stop if needed to at anything other than a slow decline in speed (wouldn’t be able to go to a full stop without ample planning or control - being cut off, too close to a red light or car needing to turn, or on the highway would’ve ended in an accident). Thankfully was on surface streets both times. Problem was recurrent. Toyota dealership confirmed issue and noted loss of braking power but noted the code was intermittent and failure not definitive, hard to reproduce. Attempted to repair issue, which temporarily worked but re-occurred 1 month later. End result - needed to replace battery, stroke position sensor, brake booster with master cylinder/ABS actuator, which was almost $4,000 in repairs, with no promise it would fix the issue. No warning lamps, signs, or notable symptoms before braking failure. Battery died twice before brakes situation, but attributed to a faulty update system sending data continuously.