Description
Factory Mercedes GLK350 4Matic BlueEfficiency Workshop Manual (2012–2015)
This official factory-level repair manual covers the Mercedes-Benz GLK350 4Matic BlueEfficiency on the X204 platform, giving US technicians and DIY owners complete service data from engine management through chassis systems for model years 2012 through 2015.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M276 3.5L V6 with BlueEfficiency direct injection (~302 hp) |
| Diesel | N/A |
| Transmissions | 7G-Tronic Plus 7-speed automatic |
| Drive | 4Matic AWD |
| Model Years | 2012–2015 |
| Badge Twins | N/A |
Common GLK350 Repairs Covered
| System | Procedures |
|---|---|
| M276 Timing Chain | Balance shaft and primary chain tensioner replacement — a known premature wear issue on the M276 engine |
| 7G-Tronic Plus Transmission | Valve body service, fluid and filter change, conductor plate inspection |
| 4Matic Transfer Case | Front differential fluid service, actuator diagnostics, AWD engagement troubleshooting |
| Electrical / CAN-Bus | ESP/ABS sensor replacement, airbag system diagnostics, wiring harness fault tracing with connector pinouts |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the M276 timing chain issue documented in this manual?
Yes. The M276 3.5L V6 is known for premature balance shaft and primary timing chain tensioner wear, and this manual includes the full chain replacement procedure, torque specifications, and special tooling requirements needed to complete the repair correctly.
Does this cover both pre-facelift and facelift X204 GLK350 models?
Yes. The manual spans the full 2012–2015 production run of the X204-platform GLK350 4Matic BlueEfficiency, covering both pre-facelift and post-facelift variants with model-specific technical data where differences exist.
Are wiring diagrams and CAN-bus diagnostics included?
Absolutely. The electrical section provides complete circuit diagrams for engine management, the 4Matic AWD system, ABS and ESP stability control, airbag systems, and climate control — along with connector pinouts, fuse box layouts, and CAN-bus diagnostic flowcharts.
What format is the manual?
This manual is delivered as a fully searchable PDF, compatible with Windows and Mac computers, tablets, and smartphones. After purchase you receive an instant download link and retain lifetime access for re-downloads.





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