Description
Factory Mercedes-Benz SL450 Workshop Manual (2017–2020)
This is the official Mercedes-Benz dealer-level workshop software for the R231-chassis SL450, covering all US-market roadster variants produced from 2017 through the 2020 model year — the same system used by authorized Mercedes-Benz service centers.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M276 3.0L Twin-Turbocharged V6 — 362 HP @ 5,500 RPM, 369 lb-ft torque |
| Diesel | N/A |
| Transmissions | 9G-TRONIC 9-speed automatic (725.0 series) |
| Drive | RWD |
| Model Years | 2017, 2018, 2019, 2020 |
| Badge Twins | N/A |
Common SL450 Repairs Covered
| System | Procedures |
|---|---|
| Vario-Roof (Retractable Hardtop) | Hydraulic pump service, position sensor calibration, roof control module fault diagnostics, emergency manual operation |
| ABC Active Body Control Suspension | Strut replacement, hydraulic pressure testing, ABC pump service, fault code diagnosis for suspension warning light |
| M276 Timing Chain | Timing chain wear inspection, tensioner replacement, valve timing verification — a known concern on high-mileage M276 engines |
| 9G-TRONIC Transmission | Valve body removal and diagnostics, fluid and filter service, shift quality adaptation reset |
Format & Delivery
Professional OEM Mercedes-Benz dealer software (NOT a PDF) — the identical interactive platform used by authorized dealership technicians. Features searchable repair databases, exploded-view component locators, integrated wiring diagrams with connector pinouts, and guided diagnostic routines. Compatible with Windows 11, 10, 8, 7, Vista, XP, Mac, and Linux. Instant download; lifetime re-downloads.
Frequently Asked Questions
What should I know about ABC suspension failures on the SL450?
The R231 SL450’s Active Body Control hydraulic suspension is known for hydraulic pump wear and strut seal failures, especially beyond 60,000 miles. This software covers full ABC system diagnostics, pump replacement procedures, strut servicing, and the hydraulic pressure specifications needed to verify correct operation after repair.
Does this software cover facelift R231 models specifically?
Yes. The 2017–2020 SL450 represents the post-facelift R231 generation, and this dealer software explicitly covers those updated chassis variants including revised front fascia, updated COMAND NTG 5.5 infotainment, and the refreshed AMG Line and Sport Package trim configurations.
Is M276 turbocharger service included?
Complete turbocharger coverage is included — oil feed line inspection, wastegate actuator diagnostics, intercooler service, and boost pressure verification procedures for both turbo units on the 3.0L biturbo V6.
What format is the manual?
This is NOT a PDF. It is professional OEM Mercedes-Benz dealer workshop software — the same interactive system used by authorized Mercedes service departments. It runs on Windows and Mac/Linux platforms and provides searchable repair data, live wiring diagrams, and step-by-step guided procedures unavailable in static document formats.
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