But there was no way around it. The Porsche has to leave the garage to make room for more important work. So, out with the relay and a "breadboard" test on the table:
clarks garage how to measure resistance. One circuit was dead. According to the experts, usually it helps to re-solder all joints.
But as you can see, the contact pins have seen better days, so I ordered a new relay. It will rest in my glovebox - just in case...
Just minutes before I also installed new hood lifters, as the old ones were a little tired, of course I chose OEM quality for the replacement parts:
A 5 minute job and only 23,80€ invested, but worth the effort. Now the hood will stay up any time.