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Heat hazards in parked vehicles

Updated 3 times since CLSTR started tracking revisions of this situation.

What changed

2026-08-05 12:42 UTC → 2026-08-09 06:15 UTC · added removed

When ambient temperatures exceed 50 °C, parked cars can become lethal chambers. Extreme heat deforms plastics, dries‑cracks rubber parts dries and tires, cracks rubber parts, and raises interior surfaces to burn‑risk burn-risk levels. Guidance continues to stress shaded or garage parking, UV‑protective UV-protective covers, sun‑blocking sun-blocking window shades, and the use of summer‑graded summer-graded tires with regular inspection. Inside the cabin, steering wheels, dashboards dashboards, and seats can become hot enough to cause injuries. Recommended safeguards include never leaving children, pets pets, or vulnerable adults unattended, employing sunshades or window curtains, ventilating before entry, and activating air‑conditioning. Steering‑wheel air-conditioning. Steering-wheel sunshades such as the START model help keep wheels cool and prevent UV‑induced UV-induced cracking. Safety experts further advise checking the temperature of child car seats and stored items before use. New attention is being given to items left in hot cars. Medications—including insulin, biologics, antibiotics antibiotics, and eye drops—can degrade above 60 °C; experts advise keeping drugs in original packaging, packaging and using insulated bags, avoiding direct sunlight and discarding any suspect supplies. bags. Automotive batteries also suffer: suffer as excessive heat accelerates electrolyte loss and corrosion, shortening service life, while cold reduces capacity. Drivers should monitor battery health, consider thermal insulation and follow maintenance or charging routines during temperature extremes. corrosion. Recent tests by the Swiss Touring Club in Italy recorded dashboard temperatures above 77 °C and cabin temperatures reaching 40 °C within minutes, °C, levels capable of causing burns, dehydration, hyperthermia, dizziness or loss of consciousness, especially in children. The Italian Ministry of Health warns of these risks and highlights hyperthermia. Regarding child safety, experts emphasize that properly fitted sunshades—fold‑away interior shades or external magnetic covers with UPF 50+ ratings—can cut temperature rise dramatically, reducing UV exposure by up if a child becomes locked inside a vehicle, the immediate priority is to 99 %. Using reflective PEVA, aluminum or composite fabrics, combined contact emergency services. To prevent accidental lock-ins, it is recommended to keep car keys on one's person, never allow children to play with opening windows and parking in shade, further lowers interior heat. Overall, the consensus remains: avoid direct sun exposure, use effective sunshades, ventilate, them, and never leave vulnerable occupants unattended in ensure a parked vehicle during extreme heat. spare key is available at home. Because car interiors act like greenhouses, temperatures can rise dangerously even when the outside weather is not extremely hot.

Versions

  1. 2026-08-09 06:15 UTC Heat hazards in parked vehicles
  2. 2026-08-05 12:42 UTC Heat hazards in parked vehicles
  3. 2026-08-04 16:43 UTC Heat hazards in parked vehicles
  4. 2026-07-28 12:48 UTC Heat hazards in parked vehicles

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