Description
Factory Mercedes-AMG GLA 45 S 4Matic+ Workshop Manual (2020-2022)
This official Mercedes-AMG dealer-grade workshop manual covers every service and repair procedure for the high-performance GLA 45 S 4Matic+ sold in North American and global markets from 2020 through 2022. Built on the H247 platform, the GLA 45 S represents the pinnacle of AMG compact crossover engineering.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 2.0L M139 turbocharged inline-4 (421 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 | N/A |
Common GLA 45 S Repairs Covered
| System | Procedures |
|---|---|
| M139 Engine | Timing chain tensioner inspection, turbocharger boost leak diagnosis, and valve cover oil leak repair |
| DCT Transmission | Dual-clutch fluid service, clutch pack adaptation reset, and mechatronic unit diagnostics |
| Suspension | AMG sport suspension strut replacement, control arm bushing wear inspection, and wheel alignment procedures |
| Electrical / MBUX | AMG performance electronics fault code diagnosis, ADAS sensor calibration, and MBUX infotainment system reset |
Format & Delivery
Official Mercedes dealer software. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the M139 engine timing chain procedure included for the GLA 45 S?
Yes. The manual includes detailed M139 engine procedures covering timing chain tensioner inspection, replacement torque specifications, and reassembly sequences. This is a known service interval item on high-mileage GLA 45 S units and the manual provides factory-spec guidance throughout.
What chassis code does the 2020-2022 GLA 45 S use, and are other GLA variants covered?
The 2020-2022 GLA 45 S is built on the H247 chassis. This manual is specifically scoped to the AMG GLA 45 S 4Matic+ variant and does not extend to the standard GLA 200, GLA 250, or GLA 35 AMG models, which use different calibration data and software modules.
Does the manual cover the AMG Performance 4MATIC+ all-wheel drive system?
Absolutely. The AWD section documents the fully variable torque distribution system unique to the 45 S, including rear-axle coupling service, transfer case diagnostics, and driveshaft removal procedures with factory torque values.
What format is the manual?
This is official Mercedes-Benz dealer software, compatible with Windows XP through Windows 11, as well as Mac and Linux systems. It is not a static PDF — the software environment provides menu-driven navigation, search by engine code or chassis, and integrated wiring diagrams. After purchase you receive an instant download link with lifetime re-download access.
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