NHTSA ID Number: 11697884
Incident Date: 2025-09-28
Manufacturer's Name: Toyota
Motor Corporation
Vehicle/Equipment Make: TOYOTA
Vehicle/Equipment Model: TUNDRA
Model Year: 2025
9999 If Unknown Or N/A
Vehicle Identification Number: 5TFJA5DB3SX
Vehicle Mileage At Failure:
Vehicle Speed:
Number Of Occurrences:
Was Vehicle Towed: No
Consumer Location: Brooksville, FL
Summary of Complaint
The HVAC climate control system in my 2025 Toyota Tundra Limited malfunctioned while the vehicle was idling. The air conditioning had been set to cool and was operating normally, but without any touch to the controls or any alert, the system switched from blowing cold air to blowing warm/hot air. This caused the cabin temperature to increase rapidly. Because there were no warning lights, notifications, or error messages, there was no indication that the air system had changed. The vehicle continued to show that A/C was on and functioning. The malfunction resulted in the cabin reaching a dangerously high temperature. This caused fatal heat injury to one animal and critical heat injury to another, both of which were inside the vehicle at the time. One is still undergoing medical treatment. This same type of HVAC issue has been reported by other 2024–2025 Toyota Tundra owners in multiple owner discussion groups, particularly related to the vehicle blowing warm air at idle or failing to maintain cabin temperature. This suggests a potential widespread defect, whether software-related or involving the A/C compressor control system. This presents a serious safety risk, especially for: Children Animals Disabled or elderly passengers Anyone unable to immediately exit the vehicle The vehicle remains in our possession and can be inspected. Service interactions with the Toyota dealership are documented and available. Immediate investigation is needed to determine the cause of this HVAC failure and whether a recall or TSB must be issued to prevent future injury or death.
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Complaint 11697884 Documents
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CRASH: No
WAS VEHICLE INVOLVED IN A CRASH
FIRE: No
WAS VEHICLE INVOLVED IN A FIRE
INJURIES: 0
NUMBER OF PERSONS INJURED
DEATHS: 0
NUMBER OF FATALITIES
Was Medical Attention Required: Yes
Was Incident Reported To Police: No
Date Of Incident: 2025-09-28
(YYYY-MM-DD)
Date Added To File: 2025-11-06
(YYYY-MM-DD)
Date Complaint Received By NHTSA: 2025-11-06
(YYYY-MM-DD)
Date Purchased:
(YYYY-MM-DD)
Was Original Owner: No
Product Type: Vehicle
V = Vehicle T = Tires E = Equipment C = Child Restraint
Specific Component's Description: ELECTRICAL SYSTEM
Anti-Lock Brakes: No
Cruise Control: No
Number Of Cylinders:
Drive Train Type:
[AWD, 4WD, FWD, RWD]
Fuel System:
FI = Fuel Injection TB = Turbo
Fuel Type:
BF = BiFuel CN = CNG/LPG DS = Diesel GS = Gas HR = HybridElectric
Vehicle Transmission Type [Auto, Man]:
(DOT) Department Of Transportation Tire Identifier:
Tire Size:
Location Of Tire:
FSW = Driver Side Front DSR = Driver Side Rear FTR = Passenger Side Front PSR = Passenger Side Rear SPR = Spare
Type Of Tire Failure:
BST = Blister BLW = Blowout TTL = Crack OFR = Out Of Round TSW = Puncture TTR = Road Hazard TSP = Tread Separation
Was Defective Tire Repaired:
Was Part Original Equipment:
Date Of Manufacture:
(YYYYMMDD)
Type Of Child Seat:
B = Booster C = Convertible I = Infant IN = Integrated TD = Toddler
Installation System:
A = Vehicle Safety Belt B = Latch System
Dealer's Name:
Dealer's Telephone Number:
Dealer's City:
Dealer's State:
Dealer's Zipcode:
SOURCE OF COMPLAINT CODE:
CAG = Consumer Action Group CON = Forwarded From A Congressional Office DP = Defect Petition,result Of A Defect Petition EVOQ = Hotline VOQ EWR = EARLY WARNING REPORTING INS = Insurance Company IVOQ = NHTSA Web Site LETR = Consumer Letter MAVQ = NHTSA Mobile APP MIVQ = NHTSA Mobile APP MVOQ = Optical Marked VOQ RC = Recall Complaint, Result Of A Recall Investigation RP = Recall Petition, Result Of A Recall Petition SVOQ = Portable Safety Complaint Form (PDF) VOQ = NHTSA Vehicle Owners Questionnaire
Incident State Code:
Vehicle Operator's Name:
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