There are 1 owner-reported engine complaints for the 2004 Mercedes-Benz S-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ S600. THE CONTACT NOTICED SMOKE UNDERNEATH THE HOOD. THE VEHICLE WAS TAKEN TO THE DEALER WHO STATED THE ACTIVE BODY CONTROL FAILED AND CAUSED THE HYDRAULIC FLUID TO LEAK. THE MANUFACTURER WAS NOTIFIED AND ADVISED THE CONTACT THAT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER: 07V263000, ENGINE AND ENGINE COOLING. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGE WAS 72,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026