Description
Factory Mercedes SL Class SL320 Workshop Manual (1994–2001)
This is the factory-level service manual for the R129-platform Mercedes-Benz SL320, covering every model year from 1994 through 2001 and giving American owners and independent shops the same technical depth used by authorized Mercedes dealers.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | M104.991 3.2L DOHC Inline-6 (approx. 228 hp) |
| Diesel | N/A |
| Transmissions | 5-speed automatic; 5-speed manual |
| Drive | RWD |
| Model Years | 1994–2001 |
| Badge Twins | N/A — R129 SL320 is a Mercedes-Benz exclusive platform |
Common SL320 Repairs Covered
| System | Procedures |
|---|---|
| Convertible Top Hydraulic System | Hydraulic cylinder replacement, pump leak diagnosis, fold sequence calibration — a notorious R129 wear item |
| M104 Engine | Valve cover gasket replacement, timing chain tensioner service, fuel injector cleaning and testing |
| Brake System | ABS module diagnostics, brake booster inspection, front and rear caliper overhaul with torque specs |
| Climate Control (HVAC) | Blend door actuator replacement, refrigerant system service, blower motor and evaporator procedures |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the infamous R129 convertible top hydraulic system covered in detail?
Yes. The convertible top mechanism is one of the most frequently serviced systems on the R129 SL320. The manual includes complete hydraulic circuit diagrams, cylinder removal and seal replacement procedures, pump pressure testing specs, and step-by-step roof fold sequence troubleshooting — everything needed to restore proper top operation.
Does this manual cover both pre-facelift and post-facelift SL320 models?
Yes. The manual spans the full 1994–2001 R129 SL320 production run, covering both the earlier models and the 1995 facelift revisions. Differences in trim, electrical connectors, and updated component specifications across model years are addressed within the relevant sections.
Are wiring diagrams included for the SL320’s electrical systems?
Complete wiring schematics are included for the engine management (M104), ABS, climate control, power windows, central locking, convertible top electrics, and the instrument cluster. Diagrams show wire colors, connector pin assignments, and component locations to support accurate fault diagnosis.
What format is the manual?
This manual is delivered as a PDF file. After purchase you receive an instant download link. The document is fully searchable, viewable on any device with a PDF reader, and you can print individual pages or entire sections for bench use. There is no expiration — re-download anytime.
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