Description
Factory Mercedes GLK250 CDI 4Matic BlueEfficiency Workshop Manual (2009–2012)
This official factory-level service manual covers the Mercedes-Benz GLK250 CDI 4Matic BlueEfficiency built on the X204 platform — the go-to reference for US technicians and serious DIYers tackling everything from routine maintenance to full powertrain rebuilds.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | N/A |
| Diesel | OM651 2.1L 4-cyl turbodiesel (CDI, ~204 hp) with BlueEfficiency common rail direct injection |
| Transmissions | 7G-Tronic 7-speed automatic |
| Drive | 4Matic permanent AWD |
| Model Years | 2009–2012 |
| Badge Twins | N/A |
Common GLK250 CDI Repairs Covered
| System | Procedures |
|---|---|
| OM651 Diesel Engine | Balance shaft sprocket wear — timing chain, balance shaft, and sprocket replacement with torque specs |
| AdBlue / Emissions | DEF/SCR system diagnostics, NOx sensor replacement, DPF regeneration procedures |
| 7G-Tronic Transmission | Fluid and filter service, conductor plate inspection, valve body removal and reinstallation |
| 4Matic Transfer Case | Transfer case fluid service, front differential seal replacement, driveshaft CV joint overhaul |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
What is the known OM651 timing issue on the GLK250 CDI?
The OM651 diesel engine fitted to the X204 GLK250 CDI is known for balance shaft sprocket wear, which can lead to timing chain noise and, if neglected, chain jump. The manual provides complete disassembly sequences, updated torque values, and the special tooling requirements needed to perform this repair correctly.
Does this manual cover the X204 chassis platform?
Yes. The GLK250 CDI 4Matic BlueEfficiency rides on Mercedes-Benz’s X204 platform, and this manual addresses all X204-specific systems including the 4Matic AWD transfer unit, suspension geometry, and body structure repair procedures.
Are wiring diagrams and electrical schematics included?
Complete electrical coverage is included — full circuit diagrams for engine management, 4Matic control, ABS/ESP, airbag systems, HVAC, and body electronics. Connector pinouts, ground references, and diagnostic flowcharts are all present to support accurate fault-finding.
What format is the manual?
The manual is a PDF document delivered via instant download. It is fully searchable, printable, and compatible with any PDF reader on Windows, Mac, or mobile devices. Your purchase entitles you to lifetime re-downloads.
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