Description
Factory Mercedes GLK Class GLK220 BlueTec 4Matic Workshop Manual (2012–2015)
This official factory-level service manual delivers complete repair and maintenance coverage for the Mercedes-Benz GLK220 BlueTec 4Matic sold in the US market from 2012 through 2015. Whether you’re diagnosing a BlueTec emissions fault or overhauling the 7G-Tronic transmission, every specification and procedure is documented here.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | N/A |
| Diesel | OM651 2.1L 4-cylinder turbodiesel (BlueTec) |
| Transmissions | 7G-Tronic 7-speed automatic |
| Drive | 4Matic permanent AWD |
| Model Years | 2012–2015 |
| Badge Twins | N/A |
Common GLK220 BlueTec Repairs Covered
| System | Procedures |
|---|---|
| BlueTec Emissions (DEF/SCR) | AdBlue injector replacement, NOx sensor diagnosis, SCR catalyst service |
| OM651 Diesel Engine | Balance shaft chain wear inspection, turbocharger removal and installation, fuel injector coding |
| 7G-Tronic Transmission | Fluid and filter service, valve body removal, conductor plate replacement |
| Suspension & Steering | Front control arm bushing replacement, rear axle carrier service, steering rack removal |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Why does the OM651 engine in the GLK220 BlueTec have a reputation for balance shaft chain issues?
The OM651 2.1L diesel used in the GLK220 BlueTec is known for premature balance shaft chain and guide wear, particularly on earlier production units. This manual covers the complete inspection procedure, chain tensioner removal, and full replacement steps including critical torque specifications—essential reading before tackling this labor-intensive repair.
What platform does the GLK220 BlueTec share with other Mercedes models?
The GLK220 BlueTec rides on the X204 platform, which it shares with the C-Class (W204) sedan, wagon, and coupe. This means many chassis, suspension, and steering components—as well as several electrical systems—are common across both model lines, and this manual reflects those shared service procedures.
Does the manual cover the AdBlue/BlueTec emissions system in detail?
Yes. Full coverage is provided for the BlueTec selective catalytic reduction (SCR) system, including the AdBlue dosing module, DEF tank heater, NOx sensors, and exhaust aftertreatment components. Fault code diagnosis and component replacement procedures are included, which is especially useful given the complexity of emission-related faults on this engine.
What format is the manual?
The manual is delivered as a PDF file. It is fully searchable and can be read on any Windows, Mac, Linux, tablet, or smartphone device using a standard PDF reader. Individual pages or complete sections can be printed for use in the shop.
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