On VWs that procedure resets many of the "learned" values in both the engine and transmission computer. I don't think it clears the readiness monitors though. A quick drive re-trains the computer.
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket
Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.
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