The German Grand Prix has become an unpredictable event thanks to short showers of rain hitting the track. Error-free strategies and zero-mistake driving saw Hamilton win the race from 14th, ahead of team mate Bottas and Kimi Raikkonen.
I'll wager it was the hydraulic problem that caused Lewis to run off, not the other way round.
The story about how bumping over the kerb caused hydraulic issues is not a clever one. There's also been some speculation about a broken suspension causing gearbox problems, even though the car was not leaning to one side. The only plausible angle is that the problem was nascent on his previous lap, causing him to go off, and then it manifested fully on the next lap, causing him to drop out of qualifying.