Description
Factory Mercedes-AMG CLA 45 S 4Matic+ Workshop Manual (2019-2022)
This is the same dealer-grade technical reference used by authorized Mercedes-AMG service centers to diagnose, repair, and maintain the C118-chassis CLA 45 S 4Matic+ sold across all markets, including the United States.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Gasoline | 2.0L M139 Turbocharged Inline-4 (416 hp) |
| Diesel | N/A |
| Transmissions | AMG Speedshift DCT 8G (8-speed dual-clutch automatic) |
| Drive | AMG Performance 4Matic+ AWD |
| Model Years | 2019, 2020, 2021, 2022 |
| Badge Twins | N/A |
Common CLA 45 S Repairs Covered
| System | Procedures |
|---|---|
| M139 Engine | Turbocharger inspection and replacement; known oil consumption diagnosis on early M139 units |
| DCT Transmission | Dual-clutch pack service, fluid change intervals, and AMG Speedshift DCT shift quality adaptation reset |
| Cooling System | Thermostat replacement, coolant flush, auxiliary electric water pump inspection on high-output M139 |
| Electrical / MBUX | Wiring harness diagnosis, MBUX infotainment fault codes, driver-assistance sensor calibration |
Format & Delivery
Dealer software (compatible with Windows XP through 11, Mac, and Linux). Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the C118 chassis code the same across all 2019-2022 CLA 45 S model years?
Yes. The entire 2019-2022 production run of the CLA 45 S 4Matic+ rides on the C118 platform. This manual covers all model year variations within that range, including running production changes introduced through the 2022 model year.
Does this manual cover the standard CLA 45 in addition to the CLA 45 S?
This specific title is focused on the higher-output CLA 45 S 4Matic+ variant. The CLA 45 (non-S) shares the M139 engine family but is calibrated to 382 hp and may require a separate manual for full coverage of its unique tune and calibration data.
Are AMG-specific systems such as the 4Matic+ rear-axle torque vectoring covered?
Yes. The AMG Performance 4Matic+ all-wheel-drive system, including its rear-axle torque vectoring unit, is fully documented with teardown procedures, fluid specifications, and diagnostic fault tree guidance.
What format is the manual?
This is dealer-grade workshop software, not a static PDF. It runs on Windows (XP through 11), Mac, and Linux, and provides menu-driven navigation, searchable content by engine code or gearbox code, and integrated wiring diagrams with zoom-in capability.
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