Description
Factory Mercedes S Class S550 Workshop Manual (2014–2017)
This is the official factory-level service manual for the W222 Mercedes S550 — the same technical resource relied upon by Mercedes-Benz dealer technicians across the United States to diagnose, repair, and maintain these vehicles to factory standards.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M278 4.7L twin-turbocharged V8 (449 hp / 516 lb-ft) |
| Diesel | N/A |
| Transmissions | 7G-TRONIC PLUS 7-speed automatic (722.9); 9G-TRONIC 9-speed automatic |
| Drive | RWD; AWD (4MATIC where applicable) |
| Model Years | 2014, 2015, 2016, 2017 |
| Badge Twins | W222 standard wheelbase; V222 long-wheelbase (Maybach base platform) |
Common S550 Repairs Covered
| System | Procedures |
|---|---|
| AIRMATIC Air Suspension | Compressor replacement, air strut service, ride-height sensor calibration |
| M278 Timing System | Timing chain tensioner replacement, camshaft adjuster service, valve timing inspection |
| Electrical / COMAND | Wiring diagram tracing, infotainment module diagnosis, body control unit coding |
| Brake System | Brake pad and rotor replacement, SBC / brake booster diagnostics, parking brake actuator service |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the M278 timing chain a known problem on the 2014–2017 S550?
Yes. The M278 4.7L twin-turbo V8 can develop timing chain tensioner wear, particularly on higher-mileage examples. This manual includes complete factory procedures for tensioner inspection, chain replacement, and camshaft adjuster service with the factory torque specifications required to perform the job correctly.
Does this manual cover both the standard W222 and the long-wheelbase V222 S550?
Yes. Both the standard-wheelbase W222 and the extended-wheelbase V222 S550 are covered. The V222 long-wheelbase platform also underpins the Mercedes-Maybach S-Class introduced for the US market starting in 2016, and shared systems are addressed throughout the manual.
Are AIRMATIC suspension procedures included?
Full AIRMATIC air suspension coverage is included — compressor diagnostics, air strut removal and installation, ride-height sensor calibration, and control module fault codes. The S550’s AIRMATIC system is one of the most commonly serviced components on this chassis, and the manual provides the factory-level detail needed to address failures properly.
What format is the manual?
This manual is a PDF document. After purchase you receive an instant download link. The file is fully searchable and compatible with Windows, Mac, iOS, and Android devices using any standard PDF reader. You may print individual pages or sections for bench use, and your download is available for life.
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