Description
Factory Mercedes R Class R400 4Matic Workshop Manual (2014–2017)
This official factory workshop manual covers the Mercedes-Benz R Class R400 4Matic (W251 chassis) from 2014 through 2017, giving US technicians and enthusiasts complete service depth for one of Mercedes’ most distinctive luxury crossovers.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M276 3.0L V6 Biturbo (~333 hp) |
| Diesel | N/A |
| Transmissions | 7G-Tronic Plus 7-speed automatic |
| Drive | 4Matic permanent AWD |
| Model Years | 2014–2017 |
| Badge Twins | N/A |
Common R Class R400 Repairs Covered
| System | Procedures |
|---|---|
| M276 Timing Chain | Timing chain tensioner inspection, guide rail replacement, chain stretch diagnosis — a known wear item on M276 V6 engines |
| Air Suspension (AIRMATIC) | Strut replacement, compressor service, ride-height sensor calibration |
| 7G-Tronic Plus Transmission | Fluid and filter service, valve body inspection, shift adaptation reset |
| CAN Bus / Electrical | Wiring diagram navigation, module fault isolation, COMAND system diagnostics |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the M276 timing chain a known problem on the R400, and does this manual cover the repair?
Yes — the M276 3.0L V6 biturbo fitted to the R400 4Matic shares the timing chain tensioner wear issue documented across multiple W-series Mercedes platforms. The manual includes complete chain, tensioner, and guide rail replacement procedures with OEM torque specifications.
What chassis code does the R400 4Matic use, and are all W251 variants included?
The R400 4Matic rides on the W251 chassis. This manual covers all W251 R400 4Matic trim levels built between 2014 and 2017, including both left- and right-hand-drive regional specifications.
Does the manual include AIRMATIC air suspension diagnostics?
Yes. Suspension coverage includes the AIRMATIC system — compressor testing, air strut removal and installation, ride-height sensor adjustment, and fault-code interpretation for suspension-related DTCs.
What format is the manual?
This manual is a PDF download. It is fully searchable, compatible with any PDF reader on PC, Mac, tablet, or smartphone, and individual pages can be printed for bench use. After purchase you receive lifetime access for re-downloading.
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