2019 Mercedes-Benz S450 Service and Repair Manual

This factory service and repair manual for the 2019 Mercedes-Benz S450 deals with a turbocharged gasoline V6 of 3.0 liters, fitted with dual overhead camshafts and installed in a four-door sedan body. Two trims are listed, Base and 4Matic. The manual covers torque specifications, turbocharger and fuel system procedures, and wiring diagrams for the sedan's electrical systems.

Engines covered

• 3.0L V6 — DOHC, turbocharged, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Base
• 4Matic

Known issues on the 2019 S450. Nine recalls name the 2019 S450 in NHTSA's records. One covered a single vehicle among certain 2019 S450 cars, where the A, B and C pillar trim may have gone on incorrectly, which could hamper the side curtain air bags or let the trim fly loose in a crash. Another applied to certain 2019 S450 vehicles that had already received a replacement instrument cluster, where software could reduce the unbuckled-belt reminder to a steady light with no chime. A third concerns certain 4MATIC versions, whose driveshaft universal joint may fail and remove drive power. Owners have lodged three complaints, one citing service brakes and one the power train, and 1 complaint among them reported a crash. The manual covers air bag, instrument cluster and driveline procedures.