That exact thing happened to me last Fall, after the new car’s first hot and humid Deep South summer. I checked for visible leaks and found none. I topped off that annoying reservoir. Thus far, nine months later, the problem has not reoccurred.
My theory: The reservoir was incompletely filled in the first place, and normal, hot-weather use lowered it just enough to generate the error message.
That said, I am watching it very carefully this summer.
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- 2024 X6 40i, Carbon Black/Silverstone, M-Sport, Executive, DAPP, Climate, Air Suspension, etc. PCD.
- 2024 iX M60, Blue Ridge Mountain/Oyster, DAPP, Luxury Package.
- Retired: Six previous BMWs.
- Retired: Three Lexuses.
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