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At least you had some time to burn off the frustration! It'll get sorted... And possibly something ridiculous and simple, the usual way these things go.
Not the same, but I'm with you in electronics pain. The family car, a 2015 Audi A4, has been off the road for two weeks because of a failed airbag control module that won't accept re-programming. Right after a spent a chunk of cash fixing the failed dual mass flywheel. Cars eh?
Is it pumping fuel?