🏷️ Basic Information

Make:

Mercedes-Benz

Model:

SLK350

Year:

2006

Chassis Code:

R171

Engine Code:

M272 E35

👋 Introduction

Positioning:

Premium compact sports roadster, targeting drivers seeking sophisticated styling, advanced technology, and engaging performance in a convertible package.

Competitors:

BMW Z4, Porsche Boxster, Audi TT Roadster, Chevrolet Corvette.

Vehicle Features:

Retractable vario-roof (hardtop convertible), AMG styling options, optional COMAND infotainment, powerful V6 engine, RWD platform.

Value Proposition:

Provides official, accurate, and detailed information for maintaining, diagnosing, and repairing the 2006 SLK350, crucial for owner upkeep and independent mechanic efficiency.

Accuracy:

Official factory information ensures accuracy and completeness, making it the definitive resource for this vehicle.

📋 Manual Details

Primary Coverage:

Mechanical and electrical systems, bodywork, troubleshooting, maintenance, diagnostics, repair procedures.

Secondary Coverage:

Technical specifications, wiring diagrams, component locations, service intervals, fluid specifications.

Estimated Pages:

1000+

Type:

Official Service and Repair Manual Software

Language:

English

Format:

Software (likely digital download or CD-ROM)

📖 Manual Coverage

Engine:

3.5L V6 (M272) - disassembly, assembly, timing, cooling, lubrication, fuel, ignition, emissions.

Transmission:

7G-TRONIC Automatic Transmission (722.9) - operation, diagnostics, fluid service, repair procedures.

Chassis:

Suspension (front/rear), steering system, braking system (ABS, ESP), wheels and tires.

Electrical:

Engine control unit (ECU), body control module (BCM), lighting, climate control, infotainment, power windows/locks/seats, CAN bus communication, wiring diagrams.

Bodywork:

Exterior panels, interior trim, convertible hardtop mechanism, doors, hood, trunk, bumpers.

Convertible Top:

Operation, maintenance, troubleshooting, hydraulic system (pump, lines, cylinders), latch mechanisms, seals.

Comfort Systems:

Automatic climate control, seat heating/ventilation, interior lighting, remote key operation, central locking.

Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, brake pad/rotor replacement, belt inspection/replacement.

Repair:

Engine component overhaul, transmission service, brake caliper replacement, suspension component replacement, electrical component diagnosis and replacement, convertible top actuator repair.

Diagnostics:

Troubleshooting guides, diagnostic trouble codes (DTCs), fault symptom analysis, using diagnostic scan tools.

Electrical Diagnostics:

Detailed troubleshooting trees, component testing procedures, fuse and relay identification, module diagnostics (ECU, TCU, BCM, SAM units).

Depth:

Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and electrical schematic interpretation.

Diagnostic Tools:

Procedures often assume the use of Mercedes-Benz proprietary diagnostic equipment (e.g., STAR Diagnosis), but the manual provides the underlying principles and component data for effective diagnosis.

📊 Manual Specifications

File Type:

Proprietary Software/Executable or PDF

Searchability:

Likely features searchable text and hyperlinked sections for efficient navigation.

Resolution:

High-resolution diagrams and text (typical for official software)

Diagrams:

High-quality, clear, and detailed diagrams including exploded views and wiring schematics.

Binding:

N/A (Software)

Paper:

N/A (Software)

⚙️ Engine Specifications

Engine Type:

Naturally Aspirated V6

Displacement:

3.5 Liters (3498 cc)

Bore X Stroke:

92.9 mm x 88.3 mm

Compression Ratio:

10.7:1

Horsepower:

268 hp @ 6000 rpm

Torque:

258 lb-ft @ 3500 rpm

Fuel Delivery:

Electronic Fuel Injection (EFI) with Sequential Port Injection

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

ECU Type:

ME 9.7

Emissions Control:

Secondary air injection system, exhaust gas recirculation (EGR) where applicable (check model specifics), catalytic converters, O2 sensors.

Valve Train:

Dual Overhead Camshafts (DOHC), 4 valves per cylinder, Variable Valve Timing (VVT) on intake and exhaust camshafts.

Coolant Type:

Mercedes-Benz MB 325.0 or MB 325.5 (Glysantin G48 equivalent)

Oil Type:

Mobil 1 Synthetic 0W-40 (MB 229.5 specification)

Oil Capacity:

8.5 Liters (8.9 US Quarts) with filter change

🔧 Transmission

Type:

7-speed Automatic (7G-TRONIC)

Gear Ratios:

Refer to manual for detailed ratios (e.g., 4.377 / 2.859 / 1.928 / 1.458 / 1.000 / 0.746 / 0.697)

Shift Modes:

Comfort (C) and Sport (S) modes.

Fluid Type:

MB 236.14 Automatic Transmission Fluid

Capacity:

Approximately 7.7 Liters (8.1 US Quarts) for a full fill, but service fill is less. Refer to manual for precise amounts.

📐 Dimensions

Length:

4088 mm (161.0 in)

Width:

1740 mm (68.5 in)

Height:

1296 mm (51.0 in)

Wheelbase:

2430 mm (95.7 in)

Ground Clearance:

Approximately 100 mm (3.9 in) - check manual for precise figure.

Curb Weight:

1530 kg (3373 lbs)

Trunk Volume:

208 Liters (7.3 cu ft) with roof up, 145 Liters (5.1 cu ft) with roof down.

🛡️ Safety Features

NHTSA Front Impact:

5-Star (for 2005 model, likely similar for 2006)

IIHS Side Impact:

Good (for 2005 model, likely similar for 2006)

Active Safety:

Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Traction Control System (TCS), Brake Assist (BAS), Tire Pressure Monitoring System (TPMS).

Passive Safety:

Driver and front passenger airbags, side airbags integrated into seats, rollover protection system (pop-up bars), seatbelt pre-tensioners.

💡 Technology Features

Infotainment System:

Optional COMAND (Cockpit Management and Navigation Display) system with CD player, radio, navigation, and optional Bluetooth/CD changer.

Driver Assistance Features:

Cruise control, rain-sensing wipers, automatic climate control, optional bi-xenon headlamps with cornering function.

Lighting Features:

Halogen or optional Bi-Xenon headlamps with integrated turn signals, LED taillights.

Connectivity Options:

Optional Bluetooth connectivity for hands-free calling. Voice control system (LINGUATRONIC) might be available on higher trims.

🔧 Maintenance

Service A B:

Mercedes-Benz utilizes a flexible service system. 'Service A' and 'Service B' are typically indicated by the vehicle's onboard computer (Service Minder System) based on driving conditions, but common intervals for major services are around 10,000 miles or 1 year. Consult the manual for exact service indicator reset procedures.

Transmission Service Interval:

Mercedes-Benz generally recommends transmission fluid and filter changes at approximately 60,000-80,000 mile intervals, or as indicated by the Service Minder system. Consult the manual for the precise recommendation for the 7G-TRONIC.

Brake Fluid:

DOT 4 PLUS (MB 331.0)

Power Steering Fluid:

Hydraulic Fluid HB 145.0 (Refer to manual for specific part number)

Coolant Capacity:

Approximately 8.5 Liters (8.9 US Quarts) - ensure correct Mercedes-Benz approved coolant is used.

Common Problems:

Variable valve timing (VVT) actuator solenoids can fail, leading to rough idle or check engine light. Drive belt tensioner and idler pulleys can wear out. Oil leaks from valve cover gaskets or oil cooler seals are possible. Convertible hardtop hydraulic system can develop leaks or pump issues. Door lock actuators can fail.

Brake System Wear:

Brake pad and rotor wear are normal, but ensuring proper caliper function and fluid condition is important for optimal braking performance.

Oil Filter:

A2721840125 (or equivalent)

Air Filter:

A2720900001 (or equivalent)

Spark Plug Type:

NGK Iridium (e.g., IFR6A11) or equivalent. Check manual for exact specifications and replacement interval.

📚 Vehicle History

Heritage:

Mercedes-Benz has a long history of producing sophisticated and high-quality roadsters, dating back to models like the 190 SL and 300 SL 'Gullwing'.

R171 Generation:

The R171 SLK-Class debuted in 2004, replacing the R170. The 2006 model year introduced the SLK350, featuring the new M272 V6 engine.

Manufacturing Location:

Bremen, Germany

🏆 Awards & Recognition

Safety Awards:

The SLK-Class generally performed well in safety tests of its era, often receiving good ratings from IIHS and NHTSA for front and side impacts. Exact awards for the 2006 model year would require specific historical research, but the platform was considered robust.