Tech said no cel code stored verified the waste gate rods move when applied vacuum verified correct vacuum to both turbo wastegate verified correct vacuum from the intake to the control . In order to perform repairs there must be a permanent code troubleshooting showed correct vacuum from the intake to the boost controller correct vacuum at both ways skates for each turbo Turbo’s are not seized no sign of unmetered air from vacuum. What could this be The car is lacking power it’s making no boost I don’t want to drive it and potentially break it worse than it is
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Hello, you're saying there was no code stored, and you're asking about P0299. So, it's confusing to me what you are asking.
Are you visiting a Mercedes-Benz dealership? Many components, being in California, may still be underneath California emissions warranty; I'd focus on dealership service department help at this time and provide any and all experience information to them to help the get to the root of the problem.
