Description
Factory Mercedes SL Class SL400 Workshop Manual (2014–2020)
This is the same OEM dealer-level repair software used by authorized Mercedes-Benz service centers across the US, covering the R231 SL400 roadster in full — from routine maintenance to in-depth diagnostics on the retractable hardtop and ABC suspension.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M276 3.0L Twin-Turbocharged V6 (329 HP @ 5,250 RPM, 354 lb-ft torque) |
| Diesel | N/A |
| Transmissions | 9G-TRONIC Nine-Speed Automatic (725.0 series) |
| Drive | RWD |
| Model Years | 2014, 2015, 2016, 2017, 2018, 2019, 2020 |
| Badge Twins | N/A |
Common SL400 Repairs Covered
| System | Procedures |
|---|---|
| ABC Active Body Control | Hydraulic strut replacement, pressure accumulator service, fault code diagnosis for ABC pump failure |
| Vario-Roof Retractable Hardtop | Hydraulic pump overhaul, position sensor calibration, roof control module fault diagnostics, emergency manual operation |
| 9G-TRONIC Transmission | Valve body removal and diagnostics, fluid and filter service, adaptation reset procedures |
| M276 Turbocharger | Turbocharger removal and inspection, oil feed line replacement, boost pressure leak diagnosis |
Format & Delivery
Professional OEM dealer software (NOT a PDF) — the same interactive repair system used by Mercedes-Benz dealerships. Runs on Windows 11, 10, 8, 7, Vista, XP, Mac, and Linux. Instant download; lifetime re-downloads.
Frequently Asked Questions
Why does the ABC Active Body Control warning light come on in my SL400?
The R231 SL400 is well known for ABC hydraulic system faults, most commonly caused by a failing high-pressure pump or leaking strut seals. The manual provides complete ABC system pressure specifications, strut replacement torque values, and step-by-step fault code diagnosis for all ABC-related DTCs.
Does this cover both pre-facelift and post-facelift R231 models?
Yes. The 2014–2016 pre-facelift and 2017–2020 facelift R231 variants are both fully covered, including differences in lighting systems, COMAND interface updates, and revised suspension calibration data introduced with the mid-cycle refresh.
Is the retractable hardtop mechanism documented in detail?
Absolutely. The vario-roof section covers the complete hydraulic circuit, pump removal and rebuilding, position sensor calibration sequences, roof control module diagnostics, and the procedure for manually operating the roof during a hydraulic system failure.
What format is the manual?
This is NOT a PDF. It is professional OEM Mercedes-Benz dealer software with searchable databases, exploded diagrams, guided repair procedures, and integrated wiring diagrams with connector pinouts. Compatible with Windows 11, 10, 8, 7, Vista, XP, Mac, and Linux.
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