The hot temperatures of these days hurt everyone and everything, not just people!
Even beloved S-Bahn trains have problems: the overheat of electronic components.
Electronic components must not be overheated, to work best; in fact the number of wagons of some trains has been reduced: from 8 to 6, in order to reduce the stress of implants.
Also to prevent reaching excessive temperatures inside wagons, with the risk of damage for people, the air conditioning was held at most in these days, and this has created some technical difficulties.
In short, these very hot days were not so pleasant and now we also know that S-Bahn doesn’t like the heat!
Picture source: Sbahn Berlin