It would help if you gave a year for this car so we know which S600 you are talking about. ie 140/220/221 etc. And what were the exact fault codes? A little history would help also.
HI
W220 2002.That car has changed cylider head gasket.
Trotle body brand new. Batery brand new, Engine not warm about 60 celcius. I have mercedes star 4. esp codes c1022-025 c1028-015 c1024-004 . You can drive maybe 10 miles no proplen no godes? After the Fan runing very fast and car stops. I waiting about one hours rest start again.
Those fault codes do not help with this particular situation, using start diagnostics would help because you can read the live data. However I would say it is either a crankshaft position sensor or the ECU. It could also be the main ignition control unit which sits on top of the engine, failing when it gets hot.
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