Description
Factory Mercedes GLA250 Workshop Manual (2013–2020)
This is the official Mercedes-Benz factory workshop manual for the first-generation GLA-Class GLA250 (X156), covering every model year from 2013 through 2020 and designed to meet the same standards used by authorized Mercedes-Benz dealerships across North America and beyond.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 2.0L M270 Turbocharged Inline-4 |
| Diesel | N/A |
| Transmissions | 6-speed manual; 7-speed 7G-DCT dual-clutch automatic |
| Drive | FWD; 4MATIC AWD |
| Model Years | 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 |
| Badge Twins | N/A |
Common GLA250 Repairs Covered
| System | Procedures |
|---|---|
| M270 Timing Chain | Timing chain tensioner replacement and chain stretch diagnosis — a known concern on early M270 engines |
| 7G-DCT Transmission | Dual-clutch fluid service, clutch pack adjustment, and shudder diagnosis at low speed |
| Brake System | Front and rear pad/rotor replacement, ESP calibration, electronic parking brake service |
| Electrical / COMAND | Wiring diagrams, circuit testing, airbag module service, and infotainment system diagnostics |
Format & Delivery
Dealer software (compatible with Windows 11, 10, 8, 7, Vista, XP; Mac; Linux). Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the GLA250 timing chain a known problem on the X156?
Yes. Early M270 engines in the 2013–2015 GLA250 are known for timing chain tensioner wear, which can cause rattling on cold starts. This manual includes complete timing chain inspection, tensioner replacement torque specs, and chain elongation measurement procedures to address this issue properly.
Does this manual cover the GLA250 4MATIC all-wheel drive system?
Yes. Both the standard front-wheel drive GLA250 and the 4MATIC AWD variant are fully covered, including the transfer case, rear differential, driveshaft, and AWD coupling unit service procedures.
Are wiring diagrams and electrical schematics included?
Full electrical documentation is included: engine management circuits, ABS/ESP, airbag systems, COMAND infotainment, climate control, lighting, and body electronics — with connector pinouts, wire color codes, and component locations throughout.
What format is the manual?
This is dealer-grade software, not a static PDF. It installs on Windows, Mac, or Linux and provides menu-driven navigation, search by engine code or gearbox code, zoom-capable diagrams, and an integrated electronic parts catalogue (EPC).
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