Description
Factory Mercedes S-Class S350 & S350CDI Workshop Manual (2005–2013)
This factory-level service manual delivers complete repair and maintenance coverage for the W221-generation Mercedes-Benz S-Class, including both the S350 petrol and S350CDI diesel models sold across the US market from 2005 through 2013.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M272 3.5L V6 (~272 hp) — S350 |
| Diesel | OM642 3.0L V6 turbodiesel (~235 hp) — S350CDI |
| Transmissions | 7G-TRONIC 7-speed automatic |
| Drive | RWD; LHD and RHD configurations |
| Model Years | 2005–2013 |
| Badge Twins | N/A |
Common S-Class Repairs Covered
| System | Procedures |
|---|---|
| M272 Balance Shaft & Timing | Balance shaft gear wear diagnosis, timing chain tensioner replacement, camshaft position sensor service |
| Airmatic Suspension | Air strut replacement, compressor overhaul, ride-height sensor calibration, valve block service |
| OM642 Diesel Intake | EGR valve cleaning, intake manifold swirl flap removal, turbocharger inspection and replacement |
| Electrical & CAN Bus | CAN-bus network fault tracing, COMAND wiring diagnosis, SAM unit testing, airbag circuit repair |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Does the M272 3.5L V6 timing chain procedure include the known balance shaft gear issue?
Yes. The manual covers the W221 S350’s M272 engine in full, including timing chain tensioner replacement and the balance shaft sprocket wear diagnosis — a well-documented concern on pre-2009 M272 engines where the plastic-toothed balance shaft gear deteriorates prematurely and can cause rattling or timing faults.
Which chassis generation does this manual cover?
This manual is specific to the W221 S-Class platform, which ran from model year 2005 through 2013. Both standard wheelbase (SWB) and long wheelbase (LWB) body styles are included. The W221 replaced the W220 and preceded the W222 S-Class introduced for 2014.
Are the Airmatic air suspension diagnostics included?
Full Airmatic coverage is included — air strut removal and installation, compressor unit servicing, valve block replacement, ride-height sensor adjustment, and fault-finding procedures for the electronic suspension control module found across both S350 and S350CDI variants.
What format is the manual?
The manual is a PDF file, downloadable immediately after purchase. It is fully searchable and compatible with any standard PDF reader on Windows, Mac, tablet, or smartphone. Individual pages or complete sections can be printed for use in the workshop.
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