Home · 2021 Toyota 4RUNNER Hybrid · Complaints

What 34 owners told NHTSA about the 2021 Toyota 4RUNNER Hybrid

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (34)Crash / fire / injury (4)Steering (12)Suspension (10)Brakes (6)Wheels (4)Electrical system (3)Lights (3)Visibility & wipers (3)Backup camera & sensors (2)Driver assistance (2)Airbags (1)

1 of 34 complaints match · Airbags · clear filters

Jul 18, 2025Electrical systemAirbagsSeats

Saturday morning July 12th after starting my vehicle, a warning was presented “SRS AIRBAG SYSTEM MALFUNCTION”. I immediately took it to the dealership where they ran diagnostics. The service advisor admitted he nor his mechanic had ever seen anything like that before. They were unable to detect the issue that day. We planned to return the vehicle Thursday July 17. I dropped it off at 10am and never heard from the dealership again that day. Friday, July 18th I contacted the service advisor around 10 am to get an update in which he said they were looking into it. Friday afternoon, I received a call from the service advisor letting me know that the front passenger Occupant ECU had malfunctioned, costing approximately $1000. After researching this, I learned that Toyota has issued many recalls on this issue with other models. I called Toyota headquarters to see how they would rectify this but ended the conversation with no solution other than it is the consumer’s liability. This is a safety issue that should fall back on the manufacturer, especially given the history of recalls issued on this specific defect.

NHTSA ODI 11674658

Working with the data? Download all 34 complaints as CSV · fetched from NHTSA July 21, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2021 Toyota 4RUNNER Hybrid verdict →