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2012 Mercedes-Benz S550 4.6L Turbo
Posted to European Engine on 7/8/2018 9 Replies

..We still do have an engine noise when cold, that sounds like a bad Air Injection pump, but the car doesn't have an Air Injection pump. The noise will happen in the first 60 seconds with the engine stone cold then it goes away. It's coming from the right side...

9 Replies Received (View Replies)

  Related Documents & Media  2012 Mercedes-Benz S550

 
Message Closed w/Summary

car Vehicle Data

2012 Mercedes-Benz S550

VIN WDDNG7DB2C
Engine4.6 L / 8 cyl / GAS
Trans7-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedTurbo
ConditionsCold
Message Closed w/Summary

car Vehicle Data

2012 Mercedes-Benz S550

VIN WDDNG7DB2C
Engine4.6 L / 8 cyl / GAS
Trans7-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedTurbo
ConditionsCold