Hey guys,
I have seen some other 2018 S550 owners on the forum complaining about an erratic idle, and unfortunately I am plagued by the same issue. The bad idle seems most frequent with the car in drive with foot on the brake, sitting at a stop. I can watch the VCT go crazy as the erratic idle begins, then the car starts bucking around for a few seconds. Fuel trims and timing go crazy, never seen anything like it. If anyone else has experienced this, please help shed some light on the issue.
Thank you,
Kris