🏷️ Basic Information Identification Make: Mercedes-Benz Model: SLK-Class Model Code: R171 Year: 2004 Trim: SLK320 👋 Introduction Market Position Segment: Compact Luxury Sports Roadster Competitive Analysis Key Competitors: • BMW Z4 • Porsche Boxster • Audi TT Roadster • Chevrolet Corvette (C5) Key Features Highlights: • Retractable hardtop (VARIO-ROOF) • Rear-wheel drive • Premium interior appointments • Focus on driving dynamics and comfort 📋 Manual Details Coverage Areas Core Sections: • Introduction • Instrument Cluster • Entertainment Systems • Climate Controls • Lights • Driver Controls • Locks and Security • Seating and Safety Restraints • Driving • Customer Assistance • Cleaning • Maintenance and Specifications • Engine compartment • Engine oil • Battery • Fuel information • Air filter(s) • Part numbers • Refill capacities • Lubricant specifications • Accessories • Service Information and Specifications • Maintenance Information and Specifications Page Count Estimated Pages: Approximately 300-400 Manual Type Type: Owner's Manual Language Language: English Format Format: Digital PDF 📖 Manual Coverage Systems Covered Vehicle Systems: • Powertrain (Engine, Transmission) • Chassis (Suspension, Brakes, Steering) • Electrical System • Infotainment and Navigation • Climate Control • Lighting Systems • Security and Locking Systems • Interior Controls and Features • Safety Restraint Systems Procedures Included Operational Procedures: • Starting and driving • Using climate control • Operating infotainment system • Adjusting seats and mirrors • Locking and unlocking doors • Using convertible top mechanism • Headlight and signal operation • Dashboard indicator and warning light interpretation • Basic maintenance checks (fluid levels, tire pressure) Technical Depth Depth: Covers user-facing operations, basic checks, and general maintenance information. Does not include in-depth repair procedures or diagnostic trouble codes typical of a service manual. 📊 Manual Specifications File Format File Type: PDF Compatibility: Requires PDF reader (Acrobat Reader, Foxit, or comparable); compatible with any device capable of reading PDF files. Print Quality Quality: Digital reproduction of factory original, maintaining original clarity and content. Binding Type Type: N/A (Digital Download) Paper Type Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated V6 Engine Code: M112 E32 Displacement: 3.2 Liters (3199 cc) Bore X Stroke: 89.9 mm x 84.0 mm Compression Ratio: 10.0:1 Performance Horsepower: 215 hp @ 5750 rpm Torque: 221 lb-ft (300 Nm) @ 3000-4500 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (Sequential) Fuel Type: Premium Unleaded Gasoline (91 Octane or higher recommended) Engine Compartment Engine Layout: Front-mounted, Longitudinal Valvetrain: SOHC, 3 Valves per Cylinder (18 Valves Total) Maintenance Recommended Oil Type: Mobil 1 Synthetic SAE 0W-40 (or equivalent) Oil Filter Part Number: Mercedes-Benz A1121800009 (or equivalent like MANN-FILTER W712/4, MAHLE OC219) Engine Oil Capacity: 8.0 Liters (8.5 US Quarts) Air Filter Part Number: Mercedes-Benz A2030940204 (or equivalent like MANN-FILTER C30228) 🔧 Transmission Standard Transmission Type: 5-speed Automatic Transmission Code: 722.6 (5G-TRONIC) Features Transmission Modes: Comfort (C) and Sport (S) Maintenance Transmission Fluid Type: MB 236.10 specification Automatic Transmission Fluid (e.g., Pentosin ATF1) Transmission Fluid Capacity: Approximately 7.5 Liters (for dry fill, less for fluid change) 📐 Dimensions Exterior Length: 169.5 inches (4305 mm) Width: 70.5 inches (1791 mm) Height: 50.1 inches (1273 mm) Wheelbase: 94.5 inches (2400 mm) Front Track: 59.3 inches (1506 mm) Rear Track: 58.7 inches (1491 mm) Weights Curb Weight: 3200-3300 lbs (approx. 1450-1500 kg) Gross Vehicle Weight Rating: 4277 lbs (1940 kg) Weight Distribution: Near 50/50 front/rear Cargo Trunk Volume: 10.2 cu ft (288 Liters) with roof up; 6.5 cu ft (184 Liters) with roof down 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (for driver and passenger) IIHS Side Impact: Good Active Features Braking System: Four-wheel Anti-lock Braking System (ABS) Stability Control: Electronic Stability Program (ESP) Traction Control: ASR (Acceleration Slip Regulation) Passive Features Airbags: • Frontal airbags (driver and passenger) • Side airbags (integrated into seats) Rollover Protection: Automatic rollover protection system (pop-up bars behind headrests) Seat Belts: 3-point inertia-reel seat belts with pre-tensioners and belt force limiters 💡 Technology Features Infotainment Audio System: COMAND (Cockpit Management and Navigation) with optional navigation, CD player, and radio. Display: Central color display for audio, climate, and navigation information. Connectivity Optional Features: • Tele Aid (emergency call system) • CD Changer • Bose premium sound system Driver Assistance Features: • Cruise Control • Rain-sensing wipers (optional) 🔧 Maintenance Service Intervals Service A Interval: Typically around 10,000 miles or 1 year (whichever comes first), indicated by 'Service A' on the display. Service B Interval: Typically around 20,000 miles or 2 years (whichever comes first), indicated by 'Service B' on the display. Major Service Items: • Spark plug replacement (e.g., Bosch FGR7KQP+ or equivalent) • Brake fluid change (every 2 years) • Coolant flush and replacement • Transmission fluid and filter change • Differential fluid change Fluid Specifications Coolant Type: MB 325.0 specification (Antifreeze/Coolant, typically ethylene glycol based) Brake Fluid Type: DOT 4 (SAE J1703 or ISO...
Covers user-facing operations, basic checks, and general maintenance information. Does not include in-depth repair procedures or diagnostic trouble codes typical of a service manual.
📊 Manual Specifications
File Format
File Type:
PDF
Compatibility:
Requires PDF reader (Acrobat Reader, Foxit, or comparable); compatible with any device capable of reading PDF files.
Print Quality
Quality:
Digital reproduction of factory original, maintaining original clarity and content.
Binding Type
Type:
N/A (Digital Download)
Paper Type
Type:
N/A (Digital Download)
⚙️ Engine Specifications
Primary Engine
Engine Type:
Naturally Aspirated V6
Engine Code:
M112 E32
Displacement:
3.2 Liters (3199 cc)
Bore X Stroke:
89.9 mm x 84.0 mm
Compression Ratio:
10.0:1
Performance
Horsepower:
215 hp @ 5750 rpm
Torque:
221 lb-ft (300 Nm) @ 3000-4500 rpm
Fuel System
Fuel Delivery:
Electronic Fuel Injection (Sequential)
Fuel Type:
Premium Unleaded Gasoline (91 Octane or higher recommended)
Engine Compartment
Engine Layout:
Front-mounted, Longitudinal
Valvetrain:
SOHC, 3 Valves per Cylinder (18 Valves Total)
Maintenance
Recommended Oil Type:
Mobil 1 Synthetic SAE 0W-40 (or equivalent)
Oil Filter Part Number:
Mercedes-Benz A1121800009 (or equivalent like MANN-FILTER W712/4, MAHLE OC219)
Engine Oil Capacity:
8.0 Liters (8.5 US Quarts)
Air Filter Part Number:
Mercedes-Benz A2030940204 (or equivalent like MANN-FILTER C30228)
Approximately 7.5 Liters (for dry fill, less for fluid change)
📐 Dimensions
Exterior
Length:
169.5 inches (4305 mm)
Width:
70.5 inches (1791 mm)
Height:
50.1 inches (1273 mm)
Wheelbase:
94.5 inches (2400 mm)
Front Track:
59.3 inches (1506 mm)
Rear Track:
58.7 inches (1491 mm)
Weights
Curb Weight:
3200-3300 lbs (approx. 1450-1500 kg)
Gross Vehicle Weight Rating:
4277 lbs (1940 kg)
Weight Distribution:
Near 50/50 front/rear
Cargo
Trunk Volume:
10.2 cu ft (288 Liters) with roof up; 6.5 cu ft (184 Liters) with roof down
🛡️ Safety Features
Ratings
NHTSA Front Impact:
5-Star (for driver and passenger)
IIHS Side Impact:
Good
Active Features
Braking System:
Four-wheel Anti-lock Braking System (ABS)
Stability Control:
Electronic Stability Program (ESP)
Traction Control:
ASR (Acceleration Slip Regulation)
Passive Features
Airbags:
• Frontal airbags (driver and passenger)
• Side airbags (integrated into seats)
Rollover Protection:
Automatic rollover protection system (pop-up bars behind headrests)
Seat Belts:
3-point inertia-reel seat belts with pre-tensioners and belt force limiters
💡 Technology Features
Infotainment
Audio System:
COMAND (Cockpit Management and Navigation) with optional navigation, CD player, and radio.
Display:
Central color display for audio, climate, and navigation information.
Connectivity
Optional Features:
• Tele Aid (emergency call system)
• CD Changer
• Bose premium sound system
Driver Assistance
Features:
• Cruise Control
• Rain-sensing wipers (optional)
🔧 Maintenance
Service Intervals
Service A Interval:
Typically around 10,000 miles or 1 year (whichever comes first), indicated by 'Service A' on the display.
Service B Interval:
Typically around 20,000 miles or 2 years (whichever comes first), indicated by 'Service B' on the display.
Major Service Items:
• Spark plug replacement (e.g., Bosch FGR7KQP+ or equivalent)
• Brake fluid change (every 2 years)
• Coolant flush and replacement
• Transmission fluid and filter change
• Differential fluid change
Fluid Specifications
Coolant Type:
MB 325.0 specification (Antifreeze/Coolant, typically ethylene glycol based)
Brake Fluid Type:
DOT 4 (SAE J1703 or ISO 4925 Class 4)
Known Issues
Common Problems:
• VARIO-ROOF hydraulic leaks/malfunctions
• Mass Air Flow (MAF) sensor issues
• Spark plug well oil leaks
• Cracked dashboard (UV exposure)
• Window regulator problems
• Ignition coil failures
📚 Vehicle History
Brand Heritage
Heritage:
Mercedes-Benz has a long history of producing premium sports cars and roadsters, dating back to models like the 300 SL 'Gullwing'.
Model Evolution
Generation:
R171 (Second Generation SLK-Class)
Previous Generation:
R170 (1996-2004)
Design Philosophy:
The R171 continued the SLK's reputation as a compact, stylish roadster with a focus on comfort and everyday usability, differentiating itself from more track-focused competitors.
Production
Manufacturing Location:
Bremen, Germany
Production Years For R171:
2004-2011
🏆 Awards & Recognition
Recognitions
Historical Awards:
While specific awards for the 2004 SLK320 are not prominently listed, the SLK-Class range generally received positive reviews for its design, performance, and innovative features like the VARIO-ROOF, contributing to Mercedes-Benz's reputation in the luxury roadster segment.