Segment:
Compact Luxury Sports Car / Roadster
Target Audience:
Enthusiasts and independent repair shops specializing in high-performance Mercedes-Benz vehicles.
Key Competitors:
BMW Z4 M, Porsche Boxster S, Audi TT Quattro
Vehicle Highlights:
Naturally aspirated 5.4L V8 engine, AMG performance tuning, retractable hardtop (VARIO-roof), advanced safety features.
Primary Coverage:
Service, Repair, Diagnostics, Maintenance, Electrical Schematics
Specific Systems:
Engine, Drivetrain, Suspension, Steering, Brakes, HVAC, Body, Electrical, Powertrain Control
Type:
Official Factory Service Manual (Software)
Format:
Software (CD-ROM/Downloadable)
Engine Management:
Complete diagnosis, repair, and overhaul procedures for the M113.992 V8 engine.
Transmission:
Detailed information on the 722.6 NAG1 (5-speed automatic) transmission, including repair, fluid service, and control module diagnostics.
Braking System:
ABS, ESP, brake pad replacement, caliper service, bleeding procedures, and component testing.
Suspension Steering:
Struts, shocks, control arms, ball joints, steering rack, power steering system service, alignment specifications.
Electrical Systems:
Comprehensive wiring diagrams, component locations, diagnostic procedures for lighting, power windows, mirrors, seats, and control modules (SAM, ECU, TCU).
HVAC System:
Climate control diagnostics, refrigerant service, compressor, evaporator, and heater core replacement.
Body And Trim:
Panel removal, interior trim, convertible top mechanism, bumper repair.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, fluid level checks and top-offs.
Troubleshooting Diagnostics:
Step-by-step diagnostic flowcharts and explanations for common and uncommon fault codes and symptoms.
Component Overhaul:
Detailed instructions for engine component rebuilds (pistons, rings, bearings), transmission rebuilds, and differential service.
Special Tools:
Identification and usage of Mercedes-Benz specific tools required for various repairs.
Torque Specifications:
Precise torque values for all critical fasteners throughout the vehicle.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, including advanced electronic diagnostics.
Configuration:
V8, SOHC (3 valves per cylinder)
Displacement:
5439 cc (5.4 Liters)
Bore X Stroke:
97.0 mm x 92.0 mm
Compression Ratio:
11.0:1
Horsepower:
355 hp @ 6000 rpm
Torque:
391 lb-ft (530 Nm) @ 3500-5000 rpm
Fuel Delivery:
Sequential Multi-Point Fuel Injection (MPI)
Fuel Type:
Premium Unleaded (91+ octane recommended)
Valve Train:
Single Overhead Camshaft (SOHC) with 3 valves per cylinder
Cooling System:
Liquid-cooled with electric cooling fan and auxiliary pump.
Ignition System:
Distributorless electronic ignition with individual coil packs.
Type:
5-speed Automatic (NAG1 / 722.6)
Gear Ratios:
1st: 3.59, 2nd: 2.19, 3rd: 1.41, 4th: 1.00, 5th: 0.83, Reverse: 3.17
Final Drive Ratio:
3.67:1
Shift Modes:
Comfort (C) and Sport (S) modes.
Fluid Type:
ATF MB 236.10 (Shell M-134, Fuchs Titan ATF 4134, etc.)
Fluid Capacity:
8.5 Liters (approx.)
NHTSA Front Impact:
Not Specifically Rated (Typical for period luxury sports cars)
IIHS Side Impact:
Not Specifically Rated (Typical for period luxury sports cars)
ABS:
Standard Anti-lock Braking System
Esp:
Standard Electronic Stability Program (ESP)
Traction Control:
Standard Acceleration Skid Control (ASR)
Airbags:
Driver and front passenger airbags, side airbags.
Rollover Protection:
Integrated roll bars behind seats.
Audio System:
COMAND APS infotainment system (optional), Bose sound system (optional).
Navigation:
GPS navigation system (optional, typically CD-based).
Cruise Control:
Standard cruise control, optional DISTRONIC adaptive cruise control.
Parking Assistance:
Optional PARKTRONIC parking sensors.
Connectivity Options:
Optional Bluetooth hands-free system.
Vario Roof Operation:
Electro-hydraulic retractable hardtop with push-button operation. Detailed troubleshooting for the roof mechanism is a key feature of this manual.
Oil Change Interval:
Every 10,000 miles or 12 months, whichever comes first (check owner's manual for specific conditions).
Major Service A:
Approx. 15,000 miles (e.g., inspect brakes, suspension, fluid levels, filters).
Major Service B:
Approx. 30,000 miles (e.g., replace air filters, cabin filter, transmission fluid and filter).
Engine Oil Type:
Mobil 1 Formula M 0W-40 (MB 229.5 standard) or equivalent.
Coolant Type:
MB 325.0 (Antifreeze/Coolant concentrate, blue)
Brake Fluid Type:
DOT 4 Plus (MB 331.0)
Engine Oil Capacity:
8.5 Liters (with filter change)
Common Issues:
Variable intake manifold runner failure, O2 sensor failures, ignition coil issues, oil leaks from valve covers and oil cooler seals.
Maintenance Recommendations:
Regular inspection of the VARIO-roof hydraulic system and seals is crucial.
Heritage:
Mercedes-Benz has a long history of producing high-performance vehicles, particularly with its AMG division.
R171 Generation:
The R171 generation of the SLK-Class was introduced in 2004, with the SLK55 AMG debuting in 2005 as the flagship model.
Slk55 Amg Significance:
This model marked a significant step by equipping a smaller roadster chassis with a large, naturally aspirated V8 engine, a signature AMG philosophy.
Production Years:
2005-2010 (R171 SLK55 AMG)
Manufacturing Location:
Bremen, Germany
