Description
Factory Mercedes-Benz M-Class W166 Workshop Manual (2011-2015)
This is the factory-level workshop manual for the Mercedes-Benz M-Class W166, the same reference used by authorized Mercedes-Benz dealer technicians across the United States for diagnostics, service, and full rebuilds.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M276 3.0L V6, M276 3.5L V6, M278 4.7L V8 Biturbo, M157 5.5L V8 AMG |
| Diesel | OM651 2.1L 4-cyl BlueTEC, OM642 3.0L V6 BlueTEC |
| Transmissions | 7G-TRONIC PLUS 7-speed automatic, 9G-TRONIC 9-speed automatic |
| Drive | RWD, 4MATIC AWD |
| Model Years | 2011-2015 |
| Badge Twins | Mercedes-Benz GLE-Class W166 (2015 rename) |
Common M-Class Repairs Covered
| System | Procedures |
|---|---|
| AIRMATIC Suspension | Air compressor replacement, strut removal, ride-height sensor calibration |
| OM642 BlueTEC Diesel | Balance shaft failure diagnosis, oil separator cleaning, injector coding |
| Transfer Case / 4MATIC | Transfer case fluid service, front differential seal replacement, actuator diagnostics |
| SAM Control Units | Front and rear SAM fault code retrieval, relay testing, water intrusion inspection |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Does the manual cover the known OM642 balance shaft failures?
Yes. The OM642 3.0L V6 BlueTEC is documented in full, including the balance shaft assembly procedures that address the oil starvation failures known to affect early W166 diesel models. Torque specs, fluid requirements, and diagnostic steps are all included.
Does this manual also cover the GLE-Class version of the W166?
Mercedes-Benz renamed the M-Class as the GLE-Class for the 2016 model year, but the W166 chassis and powertrains carried over. The mechanical and electrical content in this manual applies directly to the GLE250, GLE350, GLE400, GLE500, and GLE63 AMG built on the same platform.
Are AIRMATIC suspension diagnostics and wiring diagrams included?
Full AIRMATIC coverage is included, with wiring diagrams, component locations, ride-height sensor calibration procedures, and compressor diagnostics. Complete wiring diagrams also cover COMAND infotainment, engine management (ME/MED systems), and all SAM body control modules with connector pinouts and ground references.
What format is the manual?
This manual is delivered as a PDF file, compatible with Windows, Mac, tablets, and smartphones. It is fully searchable, printable, and requires no internet connection after download. There is no expiration date on your access.
Reviews
There are no reviews yet.