Mercedes S Class S250 CDI S300 CDI Workshop Manual (2009-2013)

Description

Factory Mercedes S-Class S250 CDI & S300 CDI Workshop Manual (2009-2013)

This official factory-level service manual gives US technicians and S-Class owners complete repair authority over the W221-chassis S250 CDI and S300 CDI diesel models, covering everything from routine scheduled maintenance to advanced electrical diagnostics.

Powertrain & Drive Coverage

Component	Variants Covered
Petrol	N/A
Diesel	OM651 2.2L 4-cyl CDI (S250 CDI, ~204 hp); OM642 3.0L V6 CDI (S300 CDI, ~235 hp)
Transmissions	7G-TRONIC 7-speed automatic
Drive	RWD; LHD and RHD configurations
Model Years	2009-2013
Badge Twins	N/A

Common S-Class Repairs Covered

System	Procedures
7G-TRONIC Transmission	Fluid replacement, adaptation reset, valve body service – addresses known harsh-shift complaints on W221 models
ABC / Air Suspension	Strut replacement, hydraulic fluid flush, ride-height sensor calibration
OM651 / OM642 Diesel Fuel System	Common-rail injector removal and coding, high-pressure pump service, BlueTEC AdBlue system diagnostics
Electrical / CAN-Bus	Wiring diagram navigation, COMAND unit fault codes, CAN-bus network diagnostics, sensor testing protocols

Format & Delivery

PDF. Instant download; lifetime re-downloads.

Frequently Asked Questions

Which chassis code does this manual apply to?

This manual covers the W221 chassis S-Class, specifically the S250 CDI and S300 CDI diesel trims built between 2009 and 2013. Both standard wheelbase (SWB) and long wheelbase (LWB) body configurations are included.

What engines are detailed in this manual?

The S250 CDI is covered under the OM651 2.2-liter four-cylinder common-rail diesel producing approximately 204 hp. The S300 CDI is covered under the OM642 3.0-liter V6 diesel producing approximately 235 hp. Both engines feature BlueTEC emissions technology, and full service procedures are provided for each.

Does the manual include 7G-TRONIC transmission service procedures?

Yes. Complete 7G-TRONIC coverage includes fluid specifications and change intervals, valve body removal, adaptation and relearn reset procedures, and troubleshooting guides for the shift-quality issues commonly reported on W221 S-Class models.

What format is the manual?

The manual is delivered as a PDF file. After purchase you receive an instant download link, and the file remains available for unlimited re-downloads. The fully searchable PDF can be used on Windows, Mac, tablet, or smartphone and individual pages may be printed for bench use.