Description
Factory Mercedes GLC 300d Workshop Manual (2020–2022)
This official factory-level service manual covers the Mercedes-Benz GLC 300d across all 2020–2022 production years, giving US technicians and owners the complete repair data needed for both the X253 SUV and C253 Coupe body styles.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | N/A |
| Diesel | OM654 2.0L 4-cylinder turbodiesel (~245 hp / 500 Nm) |
| Transmissions | 9G-TRONIC 9-speed automatic (725.0 series) |
| Drive | 4MATIC AWD |
| Model Years | 2020, 2021, 2022 |
| Badge Twins | N/A |
Common GLC 300d Repairs Covered
| System | Procedures |
|---|---|
| OM654 Diesel Engine | EGR valve cleaning/replacement, diesel particulate filter (DPF) regeneration and replacement procedures |
| 9G-TRONIC Transmission | Fluid and filter service, valve body inspection, TCU adaptation reset |
| 4MATIC Driveline | Transfer case fluid change, front/rear differential service, driveshaft replacement |
| Electrical & MBUX | CAN bus diagnostics, wiring harness pinout verification, MBUX infotainment and driver-assistance module fault tracing |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
What is the known DPF issue on the GLC 300d and is it covered?
Yes. The OM654 diesel in the GLC 300d is known for DPF clogging when used predominantly on short urban trips. The manual includes full DPF regeneration protocols, sensor testing procedures, and replacement instructions to address this concern correctly.
Does this manual cover both the X253 SUV and the C253 GLC Coupe?
Yes. Both the X253 standard-wheelbase SUV and the C253 Coupe body style are fully covered within this manual, including body-specific dimensions and trim-level differences for Sport, AMG Line, and Exclusive editions produced between 2020 and 2022.
Are wiring diagrams and CAN bus schematics included?
Full electrical documentation is included — circuit diagrams for engine management, transmission control, 4MATIC electronics, MBUX, lighting, climate control, and driver-assistance systems, along with connector pinouts and CAN bus network layouts.
What format is the manual?
The manual is a PDF file delivered via instant download after purchase. It is fully searchable and compatible with any standard PDF reader on Windows, Mac, or mobile devices. No subscription or ongoing internet connection is required.
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