Description
Factory Mercedes GLS Class X166 Workshop Manual (2016–2019)
This is the same dealer-grade workshop software trusted by Mercedes-Benz service centers across the United States, covering every GLS 350d, GLS 400, GLS 450, GLS 500, GLS 550, and AMG GLS 63 built on the X166 platform from 2016 through 2019.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M276 3.0L V6 twin-turbo (333 hp), M278 4.7L V8 twin-turbo (455 hp), M157 5.5L V8 twin-turbo AMG (577 hp) |
| Diesel | OM642 3.0L V6 (258 hp) |
| Transmissions | 7G-TRONIC PLUS 7-speed automatic, 9G-TRONIC 9-speed automatic |
| Drive | 4MATIC AWD (all variants) |
| Model Years | 2016–2019 |
| Badge Twins | N/A |
Common GLS Class Repairs Covered
| System | Procedures |
|---|---|
| AIRMATIC Air Suspension | Compressor replacement, strut/bladder service, ride-height sensor calibration — a well-known X166 wear item |
| Transfer Case / 4MATIC | Fluid change, actuator replacement, front differential service |
| OM642 Diesel Fuel System | Injector removal, high-pressure pump service, DEF/AdBlue system diagnostics |
| Brakes & ESP | Pad/rotor replacement, caliper rebuild, brake fluid flush, ABS/ESP module diagnostics |
Format & Delivery
Software (multi-language dealer application — Windows 11/10/8/7/XP/Vista, Mac, and Linux compatible). Instant download; lifetime re-downloads.
Frequently Asked Questions
Why does the AIRMATIC suspension warning light come on so often on the X166 GLS?
The AIRMATIC air suspension system on the X166 is prone to compressor wear and bladder cracking, particularly in higher-mileage examples. This manual includes complete diagnostic flowcharts, ride-height sensor recalibration steps, and full compressor and air strut replacement procedures to address these failures properly.
Does this manual cover the AMG GLS 63 with the M157 engine?
Yes. The AMG GLS 63 running the M157 5.5L biturbo V8 is fully covered, including AMG-specific torque specs, the AMG SPEEDSHIFT PLUS 7G-TRONIC transmission, and the AMG Performance Exhaust system service procedures.
Are wiring diagrams and AIRMATIC electrical schematics included?
Absolutely. The software includes full circuit diagrams for the AIRMATIC suspension control module, COMAND infotainment, LED lighting, power liftgate, and all ADAS systems. Connector pinouts and ground locations are clearly illustrated throughout.
What format is the manual?
This product is a multi-language dealer-grade software application, not a static PDF. It runs on Windows (XP through 11), Mac, and Linux, and features menu-driven navigation, search by engine code or gearbox code, zoom-in diagrams, and thousands of photographs.
Reviews
There are no reviews yet.