Description
Factory Mercedes GL Class X166 Workshop Manual (2013–2016)
Dealer-grade workshop software for the Mercedes-Benz GL Class X166, covering every full-size luxury SUV variant sold in North America and worldwide from the 2013 through 2016 model years. Identical to the resource used by authorized Mercedes-Benz service centers.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 4.7L M278 V8 twin-turbo (GL450/GLS400), 5.5L M157 V8 twin-turbo AMG (GL63/GLS63) |
| Diesel | 3.0L OM642 V6 turbo BlueTEC (GL350/GLS350d) |
| Transmissions | 7-speed 7G-Tronic Plus automatic |
| Drive | 4MATIC full-time AWD (all variants) |
| Model Years | 2013, 2014, 2015, 2016 |
| Badge Twins | GLS-Class (renamed for 2017MY; X166 platform shared) |
Common GL Class X166 Repairs Covered
| System | Procedures |
|---|---|
| AIRMATIC Air Suspension | Compressor replacement, air strut R&R, ride-height sensor calibration — a frequent failure point on X166 vehicles |
| Engine — M278 / M157 | Balance shaft sprocket wear diagnosis and replacement (M278 known issue), cam adjuster solenoid service |
| Fuel & Exhaust — OM642 | EGR cooler inspection and replacement, DEF/AdBlue system bleeding and injector service |
| 7G-Tronic Plus Transmission | Valve body removal, conductor plate replacement, fluid and filter service with torque specs |
Format & Delivery
Dealer software (VMware virtual machine). Compatible with Windows 11, 10, 8, 7, Vista, XP, macOS, and Linux. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the AIRMATIC suspension system fully documented?
Yes. The software includes complete AIRMATIC air suspension schematics, compressor wiring diagrams, ride-height sensor calibration procedures, and step-by-step air strut replacement instructions — essential coverage given how commonly these components fail on X166 GL-Class vehicles.
Does this cover both the GL-Class and GLS-Class names?
Yes. Mercedes renamed the X166 lineup from GL-Class to GLS-Class partway through its production run. This software covers all X166 platform vehicles regardless of badge — including GL350, GL450, GL500, GL63 AMG, and their GLS-branded equivalents through the 2016 model year.
Are AMG-specific procedures included for the GL63?
Yes. The M157 5.5L twin-turbo AMG engine section covers performance-specific items including the AMG exhaust system, sport-tuned AIRMATIC calibration, high-output cooling system service, and AMG transmission sport program diagnostics.
What format is the manual?
This is Mercedes-Benz dealer workshop software delivered as a VMware virtual machine image — not a PDF. It runs on Windows, Mac, and Linux systems and includes the full Electronic Parts Catalogue (EPC), wiring diagrams, diagnostic routines, and search functionality by model, engine code, and gearbox code.
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