Description
Factory Mercedes-Benz GLA250 4Matic Workshop Manual (2013–2020)
This is the official Mercedes-Benz dealer-grade workshop software for the X156 GLA250 4Matic, covering every model year from 2013 through 2020 and providing US and global technicians with factory-level repair, diagnostic, and wiring data.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 2.0L M270 Turbocharged Inline-4 (~208–211 hp) |
| Diesel | N/A |
| Transmissions | 7G-DCT 7-speed dual-clutch automatic |
| Drive | 4Matic AWD |
| Model Years | 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 |
| Badge Twins | N/A |
Common GLA250 Repairs Covered
| System | Procedures |
|---|---|
| 7G-DCT Transmission | Dual-clutch pack replacement, mechatronic unit service, fluid change — a known concern on early X156 units |
| M270 Engine | Timing chain tensioner inspection and replacement, turbocharger oil feed line service |
| Brakes & ESP | ABS module diagnostics, front brake caliper and rotor replacement, ESP sensor calibration |
| Electrical / Body | COMAND infotainment wiring diagnosis, central locking actuator replacement, airbag system fault-finding |
Format & Delivery
Official Mercedes-Benz dealer software. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the X156 GLA250 4Matic timing chain a known problem?
Yes. The M270 engine used in the GLA250 has documented timing chain tensioner wear, particularly on higher-mileage examples. This manual includes the complete factory procedure for tensioner inspection, chain slack measurement, and replacement — including torque values and special tool requirements.
Does this cover both the pre-facelift and facelifted GLA X156?
Yes. The X156 GLA250 4Matic received a mid-cycle refresh for the 2017 model year. This software covers all variants across the full 2013–2020 production span, including updated electrical schematics and revised suspension geometry data introduced with the facelift.
Are complete wiring diagrams included for the 4Matic AWD system?
Yes. Full circuit diagrams for the 4Matic transfer case control unit, rear axle coupling, ABS/ESP integration, and all associated sensors are included. Connector pinouts, wire colors, and ground locations are documented to support accurate electrical diagnosis.
What format is the manual?
This is official Mercedes-Benz dealer workshop software, not a PDF. It runs on Windows (XP through 11), Mac, and Linux, and features menu-driven navigation, full search by engine code or gearbox code, zoom-in illustrations, and integrated wiring diagrams.
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