Owners of 2013 Toyota Highlanders report five categories of airbag malfunction. The most serious: airbags failed to deploy during multiple frontal collisions—T-bone impacts at 35 mph, telephone pole strikes at 35 mph, concrete barrier hits, and rear-end accidents—resulting in owner injuries including chest, back, neck, and leg trauma. In one case, significant vehicle damage ($8,000–$10,000) occurred without airbag deployment despite clear impact.
Second, an intermittent "CHECK SRS AIRBAG SYSTEM" warning message appears when a front passenger sits down and the vehicle starts, deactivating side airbags. Toyota service has made four attempts to fix this—resetting the message, checking passenger-seat sensors and wiring, and consulting engineers—without success.
Third, spontaneous airbag deployments happened without collision: driver-side curtain and seat airbags fired while parking; both curtain airbags fired while driving 75 mph in negative 10-degree weather. No warning preceded either event.
Fourth, the passenger-side airbag sensor failed repeatedly, requiring recalibration at least four times. The problem recurs within a couple hundred miles of repair.
Finally, one owner lost vehicle control during normal braking and low-speed maneuvers, with airbags also failing to deploy. Toyota Corporate and dealerships declined to inspect or diagnose most of these issues.
Failure modes owners describe
SRS airbag system warning message—side airbag deactivation
Intermittent 'CHECK SRS AIRBAG SYSTEM' warning message that persists when front passenger is seated and vehicle is started. Message deactivates side airbags. Toyota service unable to resolve despite 4 visits, reset attempts, sensor/wiring checks under passenger seat, and engineer consultation.
When: Occurs consistently when front passenger seated and car started; intermittent occurrence
Symptoms owners cite: CHECK SRS AIRBAG SYSTEM warning message appears when passenger seated and vehicle started; Message remains until vehicle returned to Toyota; Side airbags deactivated when message active; Not weight-dependent (occurs with 120 and 300 lb passengers)
Codes mentioned: CHECK SRS AIRBAG SYSTEM
Repairs/costs cited: Toyota reset message, checked sensor and wiring under passenger seat; issue unresolved after 4 service visits
Recalls/TSBs owners mention: Toyota service unable to resolve despite 4 visits; engineer consultation performed
Airbags failed to deploy in frontal impacts
Airbags did not deploy during multiple frontal or front-end collisions causing significant vehicle damage and injury. Incidents include T-bone collisions at 35 mph, impact with metal telephone pole at 35 mph, front-end collisions at 15 mph and at concrete barrier, and rear-end collision. Owner sustained chest, back, and neck pain; another sustained right leg injury requiring medical attention.
When: At mileage 100,000; 148,000; multiple incidents reported across various mileages
Symptoms owners cite: Airbags non-deployment during frontal collision at 35 mph T-bone impact; Airbags non-deployment during telephone pole impact at 35 mph; Airbags non-deployment during 15 mph front-end collision; Airbags non-deployment during concrete barrier collision causing chest, back, neck pain; Seat belt failed to retract during one telephone pole impact; Owner sustained injuries requiring medical attention (leg injury, chest/back/neck pain)
Repairs/costs cited: One vehicle towed to independent mechanic (not diagnosed or repaired); another to Larry H. Miller Lexus (not diagnosed or repaired); one vehicle frame bent from collision
Recalls/TSBs owners mention: Toyota Corporate refused to inspect airbags after T-bone accident; requested owner send letter to claims department with no response; manufacturer notified in other incidents but no follow-up documented
Spontaneous airbag deployment without impact
Driver-side curtain and left seat airbags deployed without any collision or impact while vehicle was being parked. Toyota investigator found no issues in data collected and could not determine cause. No warning lights preceded deployment.
When: During parking maneuver (no mileage provided)
Symptoms owners cite: Spontaneous deployment of driver-side curtain airbag while parking; Spontaneous deployment of driver-side seat airbag while parking; No impact or collision occurred; No warning lights or indicators before deployment; Safety risk stated—would have caused crash if occurred while driving
Recalls/TSBs owners mention: Toyota sent investigator to inspect; investigator found no issues in data; Toyota refused to provide assistance
Curtain airbags deployed spontaneously in cold weather without impact
Both driver's and passenger's side curtain airbags deployed without warning or impact while vehicle was being driven in negative 10-degree weather at 75 mph. No diagnostic or repair performed.
When: At approximately 124,000 miles; during negative 10-degree weather conditions
Symptoms owners cite: Driver's side curtain airbag spontaneous deployment at 75 mph in cold weather; Passenger's side curtain airbag spontaneous deployment at 75 mph in cold weather; Deployment occurred without warning or impact
Repairs/costs cited: Local dealer contacted but vehicle not diagnosed or repaired
Recalls/TSBs owners mention: Manufacturer not contacted
Passenger airbag off warning light and sensor recalibration failure
Passenger-side front airbag sensor failed repeatedly with airbag off warning light illumination. Dealership claims system is fine but requires recalibration. Sensor failure occurred at least 4 times and recurs within couple hundred miles of repair. Only passenger-side affected.
When: Approximately 16,500 miles; recurring at multiple intervals
Symptoms owners cite: Airbag off warning light illuminated while driving at 65 mph; Passenger-side airbag turns off repeatedly; Passenger-side front airbag sensor failed 4 or more times; Other airbags unaffected; Recurrence within couple hundred miles of repair
Codes mentioned: Airbag off warning light
Repairs/costs cited: Dealership recalibrated system multiple times; issue recurs within couple hundred miles
Recalls/TSBs owners mention: Manufacturer notified; dealership claims system requires recalibration but no permanent fix identified
Synthesized from 15 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.