Description
Factory Mercedes GLC Class GLC250d 4MATIC Workshop Manual (2016–2020)
This is the factory-level service manual for the Mercedes-Benz GLC250d 4MATIC sold in the US and global markets from 2016 through 2020, covering both the X253 SUV and C253 Coupe body styles with complete repair and diagnostic procedures.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | N/A |
| Diesel | OM651 2.1L 4-cylinder turbocharged diesel (204 hp / 500 Nm) |
| Transmissions | 9G-TRONIC 9-speed automatic |
| Drive | 4MATIC AWD |
| Model Years | 2016–2020 |
| Badge Twins | N/A |
Common GLC250d Repairs Covered
| System | Procedures |
|---|---|
| OM651 Diesel Balance Shaft | Balance shaft sprocket wear inspection, timing chain tensioner replacement, and realignment procedures |
| 9G-TRONIC Transmission | Fluid and filter service, valve body diagnostics, and adaptive relearn reset after fluid change |
| 4MATIC Transfer Case | Transfer case fluid replacement, front differential service, and driveshaft coupling inspection |
| AIRMATIC / Suspension | Front and rear suspension geometry, control arm bushing replacement, and damper diagnostics |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the OM651 balance shaft issue documented in this manual?
Yes. The OM651 2.1L diesel used in the GLC250d is known for balance shaft sprocket and timing chain wear, particularly on higher-mileage units. This manual includes detailed timing chain and balance shaft procedures, torque specs, and special tool requirements to address this issue correctly.
Does this manual cover both the X253 SUV and C253 Coupe body styles?
Yes. Both the standard GLC X253 SUV and the GLC C253 Coupe variants equipped with the 250d 4MATIC powertrain are covered. Body-specific procedures for each chassis are included, such as structural, interior, and body panel repair differences between the two body styles.
Are wiring diagrams and CAN bus diagnostics included?
Comprehensive electrical coverage is included, with wiring schematics for engine management, COMAND infotainment, climate control, ADAS systems, fuse box layouts, and connector pinouts. CAN bus network topology and module-level fault finding procedures are also documented.
What format is the manual?
This manual is delivered as a PDF file, compatible with Windows and Mac computers, tablets, and smartphones. It is fully searchable and individual pages or sections can be printed for shop use. Download access is instant after purchase, with lifetime re-downloads available.
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