Description
Factory Mercedes-Benz AMG GLA 45 S 4Matic+ Workshop Manual (2020–2022)
This is the official factory-level workshop manual for the Mercedes-AMG GLA 45 S 4Matic+ (H247 chassis), covering every model year from 2020 through 2022 and giving US technicians the same depth of technical information used by authorized Mercedes-Benz dealers worldwide.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 2.0L M139 turbocharged inline-4 (416 hp) |
| Diesel | N/A |
| Transmissions | AMG SPEEDSHIFT DCT 8-speed dual-clutch automatic |
| Drive | AMG Performance 4Matic+ fully variable AWD |
| Model Years | 2020, 2021, 2022 |
| Badge Twins | Mercedes-AMG A 45 S (W177, shares M139 drivetrain) |
Common AMG GLA 45 S Repairs Covered
| System | Procedures |
|---|---|
| M139 Turbocharger | Turbocharger removal, wastegate actuator calibration, intercooler inspection and replacement |
| DCT Transmission | Dual-clutch pack replacement, fluid and filter service, TCU adaptation reset procedures |
| AMG 4Matic+ AWD | Rear-axle drive unit fluid service, transfer case diagnostics, driveshaft coupling inspection |
| Brake System | AMG high-performance brake pad and rotor replacement, brake-by-wire calibration, ESP sensor diagnosis |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the M139 engine known for any specific maintenance concerns on the GLA 45 S?
Yes. The M139’s port and direct injection (Nanoslide-coated bore) design can accumulate carbon deposits on intake valves over time. The manual includes detailed procedures for intake system cleaning, injector removal and testing, and valve inspection intervals specific to the GLA 45 S application.
Does this manual cover both the GLA 45 and GLA 45 S, or only the top-spec S model?
The manual is specifically documented around the H247 AMG GLA 45 S 4Matic+ variant. While the standard GLA 45 shares substantial architecture, the S model includes AMG Dynamic Plus package hardware differences; where procedures differ, the S-specific steps are clearly identified.
Are wiring diagrams and AMG-specific electronics included?
Yes. Full electrical schematics cover the AMG-specific engine management (ME17 ECU), MBUX integration, AMG Dynamic Select drive-mode electronics, torque-vectoring rear axle control modules, and all CAN bus networks—complete with connector pinouts, wire color coding, and ground point locations.
What format is the manual?
The manual is delivered as a fully searchable PDF file. It works on Windows, Mac, and Linux computers as well as tablets and smartphones. Individual pages or complete sections can be printed as needed, and the file can be re-downloaded at any time after purchase.
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