Description
Factory Mercedes SLK250 CDI BlueEfficiency Workshop Manual (2012–2020)
This is the complete factory-level repair resource for the Mercedes-Benz SLK250 CDI BlueEfficiency roadster built on the R172 platform, covering model years 2012 through 2020 for US and global markets.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | N/A |
| Diesel | OM651 2.1L 4-cylinder turbodiesel (204 hp / 500 Nm) |
| Transmissions | 7G-TRONIC PLUS 7-speed automatic |
| Drive | RWD |
| Model Years | 2012–2020 |
| Badge Twins | N/A |
Common SLK250 CDI Repairs Covered
| System | Procedures |
|---|---|
| OM651 Diesel Engine | Balance shaft chain wear inspection and replacement — a known OM651 failure point |
| Retractable Hardtop (Vario Roof) | Hydraulic pump diagnosis, latch mechanism adjustment, and seal replacement |
| 7G-TRONIC PLUS Transmission | Fluid and filter service, valve body inspection, conductor plate replacement |
| BlueEfficiency Emissions System | DPF regeneration, EGR valve cleaning, AdBlue/SCR component diagnosis |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the OM651 balance shaft chain issue covered in this manual?
Yes. The OM651 2.1L diesel used in the SLK250 CDI is known for balance shaft chain and sprocket wear, particularly on higher-mileage examples. This manual includes complete timing and balance shaft chain inspection, tensioner assessment, and full replacement procedures with factory torque specifications.
What chassis code does this manual cover?
This manual covers the R172 chassis, which is the third-generation SLK-Class. The R172 was produced from 2011 onward; the SLK250 CDI BlueEfficiency variant within that generation is fully covered for the 2012–2020 production span, including both left- and right-hand drive builds.
Are the retractable hardtop and electrical systems documented?
Fully. The manual includes hydraulic and mechanical repair procedures for the Vario folding hardtop roof mechanism, plus comprehensive wiring diagrams covering the engine management system, lighting, climate control, and all body electronics with connector pinouts and ground locations.
What format is the manual?
The manual is delivered as a PDF file, available for instant download immediately after purchase. It is fully searchable, zoomable on detailed diagrams, and compatible with any standard PDF reader on Windows, Mac, iOS, or Android devices. Individual pages or entire sections can be printed for bench use.
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