Description
Factory Mercedes S Class S450 & S450 CDI Workshop Manual (2006–2013)
This is the factory-level service manual for the Mercedes-Benz W221 S-Class covering both the S450 petrol and S450 CDI diesel variants — the same technical reference relied upon by authorized Mercedes dealer technicians throughout the 2006–2013 production run.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M273 4.7L V8 (~340 hp) — S450 |
| Diesel | OM629 4.0L V8 Turbodiesel (~320 hp) — S450 CDI |
| Transmissions | 7G-TRONIC 7-speed automatic |
| Drive | RWD; LHD and RHD configurations |
| Model Years | 2006–2013 |
| Badge Twins | N/A |
Common S Class Repairs Covered
| System | Procedures |
|---|---|
| AIRMATIC Air Suspension | Compressor replacement, strut/bag renewal, valve block diagnostics — a well-documented W221 failure point |
| 7G-TRONIC Transmission | Valve body repair, fluid and filter service, torque converter replacement, conductor plate renewal |
| Engine Management | M273 camshaft adjuster solenoid replacement, OM629 turbocharger inspection and overhaul, fuel injector coding |
| Electrical & CAN-Bus | COMAND system wiring, Pre-Safe fault diagnosis, CAN-bus network troubleshooting, wiring harness inspection |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the AIRMATIC air suspension system covered in detail?
Yes. The W221 S-Class AIRMATIC system is covered in full, including diagnostic procedures for the compressor, individual air strut and bladder replacement, valve block servicing, and electronic level-sensor calibration — all common maintenance tasks on aging W221 models.
Does this manual cover both standard and long-wheelbase body styles?
Yes. The manual addresses both the standard wheelbase (SWB) and extended long-wheelbase (LWB) versions of the W221 S-Class, including any body-specific dimensional or trim differences relevant to service procedures.
Are the 7G-TRONIC transmission overhaul procedures included?
Full transmission coverage is provided, including valve body disassembly and repair, conductor plate replacement — a known wear item on the 7G-TRONIC — torque converter specifications, fluid capacity data, and adaptation reset procedures after service.
What format is the manual?
The manual is a PDF file available for immediate download after purchase. It is fully searchable, printable, and compatible with Windows, Mac, iOS, and Android devices. No subscription or ongoing internet connection is required for access.
Reviews
There are no reviews yet.