Owners of 2005 Priuses consistently report airbags failing to deploy in frontal and broadside collisions at speeds between 25 and 55 mph—impacts severe enough to total the vehicle. Collisions ranged from head-on crashes, offset frontal hits, and T-bone impacts to single-vehicle tree strikes after skidding. In many cases, the front end was crushed, pushed back over a foot into the dashboard, or so mangled that firefighters had to cut doors open. Yet airbag systems with driver-side, passenger-side, and side-curtain bags all remained inactive. Occupants hit windshields, dashboards, and door frames. Some required hospitalization, neck collar treatment, CT scans, and MRIs; one suffered permanent shoulder injury with limited arm mobility.
When contacted, Toyota's standard response was that speeds were too low, impact angle was wrong, or the vehicle didn't hit hard enough—claims that contradict the severity of structural damage owners describe. One owner received Toyota's claim that a 32–35 mph head-on collision with the Jeep's airbags deploying wasn't hard enough for the Prius system; the Jeep driver was drunk with no injuries.
Separately, owners report a chronic SRS warning light issue: the light comes on, gets reset at the dealership, then returns within weeks or months. One owner noted the dashboard bulging upward under the "SRS AIR BAG" label on the passenger side—the exact same spot on both of his 2005 Priuses. Dealers identified wiring harness defects requiring $2,000 to $4,373 in repairs, with technicians stating they were aware of the problem across the model line. Toyota issued no recall for these defects.
Failure modes owners describe
Airbag non-deployment in moderate to high-speed frontal collisions
Driver-side, passenger-side, and/or side-curtain airbags fail to deploy during frontal or broadside collisions at speeds ranging from approximately 25 to 55 mph, including offset and head-on impacts with significant structural damage.
When: Various incidents from 2008 through 2024; mileage at failure ranged from 48,000 to 280,000 miles
Symptoms owners cite: No airbag deployment despite frontal impact; No side-curtain airbag deployment in broadside collisions; Vehicle totaled but airbags remained inactive; Occupants struck windshield, dashboard, or door frames without airbag protection; Injuries sustained that occupants believe would have been reduced or prevented by airbag deployment
Codes mentioned: SRS airbag system failure (no specific codes provided in narratives)
Repairs/costs cited: No repairs documented for non-deployment events; owners indicate vehicle destruction and towing to insurance or repair shops
Recalls/TSBs owners mention: Toyota claimed insufficient impact severity, wrong collision angle, or insufficient speed to trigger deployment; refused to investigate after bumper removal; stated vehicle was out of warranty and no recalls applied
Airbag warning light illumination and recurrence
SRS airbag warning light comes on and either stays on or cycles off and back on intermittently; resets temporarily at dealership but returns; one case noted dash bulging under 'SRS AIR BAG' label on passenger side.
When: Reported as early as 3–4 years prior to complaint date; failures as recent as 2015; pattern of cycling over years
Symptoms owners cite: SRS airbag warning light illuminates and remains on; Light resets after dealer visit but returns within weeks to months; Intermittent warning light that sometimes clears when steering wheel is turned; Dash bulging upward on passenger side under 'SRS AIR BAG' label (same location on two different 2005 Prius owned by one person)
Codes mentioned: SRS malfunction detected (specific codes not provided)
Repairs/costs cited: Dealers replaced front passenger seat twice; cleared error codes; replaced wiring harness and main computer; costs cited include approximately $2,000 for wiring harness replacement and $4,373.07 for driver and passenger squib airbag harness replacement
Recalls/TSBs owners mention: Told no recalls apply; stated vehicle out of warranty; documented reports but advised owner to return to dealer for inspection
Airbag wiring harness defect
Wiring harness under seat or in airbag circuit develops a defect causing loss of airbag function and warning light illumination; dealers confirm defect awareness within the industry.
When: Failures noted at 12,000, 80,000, 105,000, and 107,000 miles
Symptoms owners cite: SRS airbag warning light illuminates; Diagnostic confirms wiring harness malfunction; Airbags confirmed non-functional due to harness failure
Codes mentioned: Wiring harness defect (no OBD codes provided)
Repairs/costs cited: Wiring harness replacement quoted at approximately $2,000; squib airbag harness replacement quoted at $4,373.07; one owner reports dealers are aware of the problem but no recall issued
Recalls/TSBs owners mention: No recall issued despite dealer awareness of the defect; one narrative states Toyota and dealer ignored request to download event data recorder
Clock spring failure
Clock spring component under steering wheel develops defect causing intermittent airbag warning light that sometimes clears when steering wheel is turned.
When: Timing not specified; reported as intermittent issue
Symptoms owners cite: Airbag warning light illuminates intermittently; Warning light clears when steering wheel is turned
Codes mentioned: Clock spring malfunction
Repairs/costs cited: No repair cost provided
Synthesized from 35 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.