Description
Factory Mercedes A-Class A45 AMG 4Matic+ Workshop Manual (2020-2021)
This is the same OEM dealer software used by authorized Mercedes-AMG service centers to diagnose and repair the W177 A45 AMG 4Matic+ — covering every system from the record-setting M139 twin-turbo engine to the advanced 4Matic+ all-wheel-drive hardware.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 2.0L M139 Twin-Turbo inline-four (387–421 hp) |
| Diesel | N/A |
| Transmissions | AMG Speedshift DCT 8-speed dual-clutch |
| Drive | 4Matic+ fully variable AWD |
| Model Years | 2020–2021 |
| Badge Twins | N/A |
Common A45 AMG Repairs Covered
| System | Procedures |
|---|---|
| M139 Turbocharger | Twin-scroll turbo inspection, boost pressure diagnostics, intercooler service, wastegate actuator replacement |
| AMG Speedshift DCT | Dual-clutch fluid change, clutch pack wear diagnosis, transmission adaptation reset, mechatronic unit checks |
| 4Matic+ AWD System | Rear-axle torque distribution calibration, rear differential fluid service, AWD coupling unit diagnostics |
| Electrical / MBUX | CAN-bus fault tracing, MBUX infotainment module replacement, AMG instrument cluster coding, sensor network diagnostics |
Format & Delivery
Mercedes dealer software delivered as a VMware Player virtual machine — NOT a PDF. Compatible with Windows 11, 10, 8, 7, Vista, XP, Mac, and Linux. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the M139 engine fully covered, including turbocharger and fuel injection procedures?
Yes. The software includes complete teardown and reassembly data for the AMG M139 2.0L twin-turbo — widely recognized as the most powerful series-production four-cylinder engine available. Coverage includes twin-scroll turbocharger service, high-pressure direct injection system, timing chain procedures, and all torque specifications to factory standards.
Does this cover both the standard A45 AMG and the A45 AMG S variant?
The software covers the W177 A45 AMG 4Matic+ lineup for model years 2020–2021, which includes both the base A45 AMG (387 hp) and the A45 AMG S (421 hp) variants. All AMG-specific hardware differences between trim levels are addressed within the database.
Are AMG-specific brake and suspension procedures included?
Absolutely. The software covers the AMG sport suspension geometry settings, adaptive damper diagnostics, front and rear axle service, and the high-performance brake system including AMG compound caliper and rotor replacement procedures with correct torque values.
What format is the manual?
This is professional OEM Mercedes dealer software, not a PDF. It runs as a VMware Player virtual machine and is compatible with Windows, Mac, and Linux operating systems. Features include interactive wiring diagrams, searchable component locators, zoom-capable illustrations, and step-by-step repair guidance identical to what authorized Mercedes-AMG dealerships use.
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