Thank you very much for the answer.

I've just opened the relay and I'm not able to find any burnt or suspicious looking parts.
Any specific parts that should be checked?
Is there a way to test the relay outside of the car?

The problem is anyhow reduced since I've tracked a used one for less than $100, but still....

Best regards.
Frode

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frogs
Mercedes 190E -86
Kawasaki Voyager 1300 -85

Fredrikstad, Norway
Heia FFK!