Peugeot 308 Headlight Washer Issue

I have a Peugeot 308 as well and recall facing something similar. Did you notice any unusual fluid leaks prior to the headlight cleaning system malfunction? Also, are your headlights LED or Xenon?

Thanks! I haven't seen any fluid leaks. The headlights are LED, not Xenon. Could the headlight type be the reason?

The headlight type could influence the diagnosis, though the underlying issue of a defective cable connection affecting both headlight and windshield washer systems seems plausible. Since you've already checked for leaks, and given your technical assessment, a workshop visit is advisable. It looks like it could be a faulty headlight pump.

Thanks for the advice! I took the Peugeot to a certified workshop, and you were spot on: The final bill came to 165€, and, as suspected, the cable connection of the pump was indeed defective, warranting the replacement of some parts. Your help saved me a lot of time.