Mercedes M Class ML350 BlueEfficiency 4Matic Workshop Manual (2012-2015)

Description

Factory Mercedes M Class ML350 BlueEfficiency 4Matic Workshop Manual (2012-2015)

This is the official factory-level workshop manual for the Mercedes-Benz ML350 BlueEfficiency 4Matic, built on the W166 chassis – giving US owners and independent shops the same technical depth used by authorized Mercedes dealers.

Powertrain & Drive Coverage

Component	Variants Covered
Petrol	M276 3.5L V6 Direct Injection (approx. 306 hp / 370 Nm)
Diesel	N/A
Transmissions	7G-Tronic Plus 7-speed automatic
Drive	4Matic permanent AWD
Model Years	2012-2015
Badge Twins	N/A

Common ML350 Repairs Covered

System	Procedures
M276 Timing Chain	Timing chain tensioner replacement and chain guide service – a known W166 M276 wear item
7G-Tronic Plus Transmission	Valve body removal, fluid and filter service, torque converter diagnostics
Air Suspension / AIRMATIC	Strut replacement, compressor diagnosis, ride-height sensor calibration
Cooling System	Thermostat housing replacement, coolant pipe inspection, radiator service

Format & Delivery

PDF. Instant download; lifetime re-downloads.

Frequently Asked Questions

Is the M276 timing chain really a problem on the W166 ML350?

Yes – the M276 3.5L V6 used in the 2012-2015 ML350 is known for timing chain tensioner wear, particularly on higher-mileage examples. This manual includes the full chain tensioner and guide replacement procedure, torque specifications, and timing mark alignment instructions needed to address this correctly.

Does this manual cover both pre-facelift and post-facelift W166 variants?

Yes. The manual spans the full 2012-2015 production run of the W166 ML350 BlueEfficiency 4Matic, encompassing both the original specification and any mid-cycle updates. All applicable specification differences are documented within the relevant sections.

Are wiring diagrams and CAN bus diagnostics included?

Full electrical coverage is provided, including circuit diagrams for the engine management system, 4Matic transfer case electronics, ABS/ESP modules, COMAND integration, and CAN bus network topology. Connector pinouts and ground locations are also documented to support accurate fault diagnosis.

What format is the manual?

The manual is a PDF file, downloadable immediately after purchase. It is fully searchable, compatible with any PDF reader on Windows, Mac, or mobile devices, and individual pages can be printed for use at the workbench.