Description
Factory Mercedes GLC Class GLC400d Workshop Manual (2020–2022)
This is the official dealer-level service manual for the Mercedes-Benz GLC400d, covering both the X253 SUV and C253 Coupe body styles sold in the US and global markets between 2020 and 2022. Every repair and maintenance procedure is documented to OEM standards.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | N/A |
| Diesel | OM656 3.0L inline-six turbodiesel (~330 hp / 700 Nm) |
| Transmissions | 9G-TRONIC 9-speed automatic |
| Drive | 4MATIC AWD |
| Model Years | 2020–2022 |
| Badge Twins | N/A |
Common GLC400d Repairs Covered
| System | Procedures |
|---|---|
| OM656 Diesel High-Pressure Fuel System | Piezo injector removal, fuel rail pressure testing, low-pressure pump replacement |
| 9G-TRONIC Transmission | Valve body service, fluid and filter change, torque converter replacement |
| AdBlue / SCR Emissions System | DEF pump and injector replacement, NOx sensor diagnosis, SCR catalyst inspection |
| Air Suspension (AIRMATIC) | Compressor replacement, strut replacement, level sensor calibration |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
What chassis variants are included in this manual?
Coverage extends to both the X253 (standard GLC SUV) and C253 (GLC Coupe) chassis in GLC400d specification for model years 2020 through 2022, including Sport, AMG Line, and Exclusive trim levels.
Does the OM656 engine coverage include the EGR and SCR emissions systems?
Yes. The manual provides full procedures for the exhaust gas recirculation system, selective catalytic reduction components, AdBlue dosing injector, and associated NOx sensors — all common service areas on the OM656 diesel.
Are wiring diagrams and CAN bus layouts included?
Detailed electrical schematics are included, covering engine management, COMAND infotainment, driver assistance systems, body control modules, connector pinouts, ground references, and CAN/LIN bus network architecture.
What format is the manual?
The manual is a PDF file delivered by instant download immediately after purchase. It is fully searchable, printable, and compatible with Windows, Mac, iOS, and Android devices. Lifetime re-downloads are included with every order.
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