Description
Factory Mercedes M-Class ML350 BlueTec 4Matic Workshop Manual (2012-2015)
This is the same technical resource used by authorized Mercedes-Benz dealer workshops across North America – a complete service and repair reference for the W166-chassis ML350 BlueTec 4Matic, covering model years 2012 through 2015.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Diesel | OM642 3.0L V6 turbodiesel (BlueTec) |
| Petrol | Not applicable to this variant |
| Transmissions | 7G-Tronic Plus 7-speed automatic (722.9 series) |
| Drive | 4Matic permanent AWD |
| Model Years | 2012-2015 |
| Badge Twins | N/A |
Common ML350 BlueTec Repairs Covered
| System | Procedures |
|---|---|
| BlueTec Emissions (SCR/AdBlue) | NOx sensor replacement, DEF injector service, SCR catalyst diagnosis |
| OM642 Oil Cooler / Intake Swirl Flaps | Oil cooler seal replacement, swirl flap actuator removal and inspection |
| 7G-Tronic Transmission | Fluid and filter service, conductor plate replacement, adaptation reset |
| Air Suspension (AIRMATIC) | Strut replacement, compressor service, ride-height sensor calibration |
Format & Delivery
Software. Instant download; lifetime re-downloads.
Frequently Asked Questions
Why do W166 ML350 BlueTec models commonly have oil cooler seal failures?
The OM642 V6 diesel uses an aluminum oil cooler mounted near the valley of the engine. Over time, the rubber seals degrade from heat cycling, causing coolant and oil to mix. This manual provides the full removal sequence, seal part specifications, and torque values needed to perform a correct repair without removing the engine.
Does this manual cover the BlueTec SCR emissions system and AdBlue components?
Yes. Complete coverage is included for the Selective Catalytic Reduction system – including the DEF (AdBlue) tank, dosing injector, NOx sensors upstream and downstream of the catalyst, and the SCR control module. Fault code diagnostics and component testing procedures are fully documented.
Is the 4Matic transfer case and front differential service covered?
Full service procedures are included for the 4Matic permanent all-wheel-drive transfer case, front and rear differentials, propshafts, and associated electronic control systems such as the 4ETS traction management system.
What format is the manual?
This product is delivered as dealer-level workshop software. It is compatible with Windows 11, 10, 8, 7, XP, Vista, Mac, and Linux. After purchase, you receive instant download access with the ability to re-download at any time.
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