I have the same problem on a iPhone 17 Pro Max running iOS 26.5.1, 26.5.2 and even 26.6 beta 3 with constant battery drain and thermal problems. This is the error from the console: ** could not find `cpu-avg-limiter-input-w2r property ** I wonder if the ` before the cpu-avg-limiter-input-w2r property is some kind of typo and that's why thermalmonitord is not able to read that property.