As you try to stay cool in the hot weather, keep in mind this friendly ActiveKEY battery tip from Supra:

“Temperature extremes can affect battery performance. If the ActiveKEY is below 0° C (32° F) or above 40 ° C (104° F), it will not charge. During very cold or hot times of the year, bring your ActiveKEY in from your car at night and between showings.”

Image courtesy of Peter Miller