Description
Factory Mercedes S Class S320 Workshop Manual (2014-2020)
This is the factory-level repair and service manual for the Mercedes-Benz S Class S320 (W222 chassis), covering every US-market and global variant produced from 2014 through 2020. Whether you’re tackling routine maintenance or complex drivetrain work, this is the same technical reference used by authorized Mercedes dealers.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M276 3.0L V6 Biturbo (~272 hp) |
| Diesel | OM642 3.0L V6 CDI |
| Transmissions | 7G-TRONIC PLUS 7-speed automatic, 9G-TRONIC 9-speed automatic |
| Drive | RWD; 4MATIC AWD where fitted |
| Model Years | 2014-2020 |
| Badge Twins | N/A |
Common S320 Repairs Covered
| System | Procedures |
|---|---|
| Air Suspension (AIRMATIC) | Compressor replacement, strut seal service, ride-height sensor calibration – a known W222 wear item |
| M276 Engine | Balance shaft and timing chain tensioner replacement, valve cover gasket R&R, spark plug service |
| 9G-TRONIC Transmission | Fluid and filter service, conductor plate inspection, selector lever unit diagnosis |
| Electrical / COMAND | CAN bus fault tracing, wiring diagram reference, COMAND display and sensor module diagnostics |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the W222 AIRMATIC air suspension fully covered in this manual?
Yes. The manual includes complete diagnostic and repair procedures for the W222 AIRMATIC system – one of the most common service areas on this generation S Class. You’ll find compressor testing specs, strut replacement steps, ride-height sensor adjustment, and fault code interpretation for the air suspension control module.
Does this manual cover both standard and long-wheelbase S320 body styles?
Yes. Both the standard-wheelbase W222 and the extended-wheelbase V222 body configurations are covered within this manual, including any dimension-specific chassis or interior fitting differences between the two builds.
Are wiring diagrams and CAN bus network schematics included?
Yes. The electrical section provides full circuit diagrams with wire colors, connector pin assignments, and ground locations for all major systems including engine management, COMAND infotainment, climate control, advanced driver assistance (DISTRONIC, PRE-SAFE), and the CAN/LIN network topology across the W222 platform.
What format is the manual?
This manual is delivered as a PDF file. After purchase you receive an instant download link. The file is fully searchable, printable, and compatible with Windows, Mac, iOS, and Android devices – convenient whether you’re at a workbench or looking something up on a tablet in the shop.
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