🏷️ Basic Information

Make:

Mercedes-Benz

Model:

SLK-Class

Chassis Code:

R172

Model Year:

2017

Product Type:

Workshop Service Repair Manual

👋 Introduction

Market Position:

The Mercedes-Benz SLK-Class (R172) is positioned as a premium compact roadster, blending sporty performance with luxury and advanced technology. It competes with vehicles like the Audi TT Roadster, BMW Z4, and Porsche Boxster.

Competitive Analysis:

The R172 SLK offered a retractable hardtop (vario-roof), a more refined and comfortable ride compared to some rivals, and a focus on luxury amenities and driver assistance technologies, differentiating it from more track-focused or minimalist sports cars.

Key Features:

The 2017 R172 SLK-Class (now renamed SLC-Class in some markets for this model year, though this manual specifies SLK R172) is known for its distinctive styling, advanced engineering, comfortable interior, and the signature retractable hardtop. The manual provides comprehensive support for maintaining these premium features.

📋 Manual Details

Coverage Areas:

All models, engines, trim levels, and transmission types for the 2017 Mercedes-Benz SLK-Class R172. Covers every service and repair procedure from A-Z.

Page Count:

Not specified, but described as 'complete' and covering procedures A-Z, implying extensive detail.

Manual Type:

Complete Workshop Service Repair Manual

Language:

English

Format:

Downloadable Digital Format (PDF)

📖 Manual Coverage

Systems Covered:

Engine mechanical, engine electrical, fuel system, exhaust system, cooling system, lubrication system, ignition system, starting and charging system, transmission (automatic and manual), drivetrain, suspension, steering, brakes (hydraulic, ABS, ESP), climate control, body electrical, lighting, chassis, bodywork, interior trim, safety systems (airbags, seatbelts), diagnostics and troubleshooting.

Procedures Included:

Routine maintenance, scheduled servicing, diagnostic procedures, troubleshooting guides, repair procedures for all major and minor components, component removal and installation, electrical system diagnostics and repair, wiring diagrams, specifications, torque values, fluid capacities and types, special tool recommendations, component testing, preventative maintenance.

Technical Depth:

Comprehensive, covering everything from basic maintenance to advanced repair and diagnostics. Includes step-by-step instructions with pictures for ease of understanding.

📊 Manual Specifications

File Format:

PDF (Portable Document Format)

Print Quality:

High Quality, printable pages allowing users to print individual sections or the entire manual.

Binding Type:

Digital Download (No physical binding)

Paper Type:

N/A (Digital format)

Software Requirements:

Adobe Reader (or compatible PDF reader) required, free download available.

Accessibility:

Downloadable to PC, Mac, tablets, and smartphones for offline use.

⚙️ Engine Specifications

Primary Engine Options:

The 2017 SLK-Class R172 was typically offered with a range of turbocharged inline-4 and V6 engines. Common options included the SLK200 (1.8L or 2.0L I4), SLK250 (1.8L I4 or 2.0L I4), SLK300 (2.0L I4), and SLK350 (3.5L V6). The manual covers all these variants.

Engine Performance General:

Engine performance varies by model, with outputs ranging from approximately 180 hp (SLK200) to over 300 hp (SLK350). Specific horsepower, torque, and acceleration figures are detailed within the manual for each engine variant.

Fuel System:

Direct fuel injection (BlueDIRECT technology) is standard across most R172 variants, utilizing high-pressure fuel pumps and injectors for precise fuel delivery and improved efficiency. The manual details fuel pressure specifications, injector testing, and fuel pump replacement.

Engine Management System:

Sophisticated Engine Control Unit (ECU) managing fuel injection, ignition timing, variable valve timing, turbocharger boost, and emissions control. Diagnostic trouble codes (DTCs) and troubleshooting procedures are covered.

🔧 Transmission

Standard Transmission:

Depending on the specific engine and market, a 6-speed manual transmission was available on some lower-spec models. However, the 7-speed 7G-TRONIC PLUS automatic transmission was the dominant offering and is extensively covered.

Optional Transmission:

The 9G-TRONIC 9-speed automatic transmission became available on some later R172 models, particularly the SLC variants. This manual likely covers the prevalent 7G-TRONIC PLUS and potentially the 9G-TRONIC if applicable to the 2017 model year R172 designation.

Transmission Features:

Both automatic transmissions offer manual shifting modes (via steering wheel shift paddles or gear selector) and adaptive shift programs. The manual includes procedures for transmission fluid changes, filter replacements, torque converter diagnostics, and transmission control module (TCM) diagnostics.

📐 Dimensions

Exterior Dimensions:

Length: approx. 4137 mm (162.9 in), Width: approx. 1740 mm (68.5 in), Height: approx. 1301 mm (51.2 in). Wheelbase: approx. 2430 mm (95.7 in). Exact dimensions may vary slightly by specific model and options.

Interior Dimensions:

Seating for two occupants. Interior space is optimized for a compact roadster, with supportive seating and ergonomic driver controls. The manual details interior trim removal and installation.

Cargo Capacity:

Trunk volume is approximately 335 liters (11.8 cu ft) with the vario-roof stowed. This capacity reduces when the roof is down. The manual provides information on trunk lid operation and related components.

Curb Weight:

Curb weight varies by model, generally ranging from around 1400 kg to 1550 kg (approx. 3086 lbs to 3417 lbs).

🛡️ Safety Features

Safety Ratings General:

While specific 2017 ratings may vary by region, the R172 SLK typically achieved high safety scores in Euro NCAP and IIHS crash tests due to its robust structure and comprehensive safety systems. The manual details airbag system operation and repair.

Active Safety Features:

Anti-lock Braking System (ABS), Electronic Stability Program (ESP) with Acceleration Skid Control (ASR), Brake Assist (BAS), Adaptive Brake lights, tire pressure monitoring system, and optional features like COLLISION PREVENTION ASSIST (radar-based proximity warning and adaptive brake assist), ATTENTION ASSIST (drowsiness detection).

Passive Safety Features:

Driver and front passenger airbags, side airbags integrated into the seat, knee airbags (on some models), seatbelt pretensioners and force limiters, rollover protection system (integrated into the A-pillars and deployable roll bars behind the headrests), and a highly rigid body structure.

💡 Technology Features

Infotainment System:

The COMAND infotainment system was standard or optional, featuring a high-resolution display, AM/FM/CD/DVD player, Bluetooth connectivity, USB interface, and often satellite radio. Navigation was usually an option. The manual covers system operation, troubleshooting, and potential updates.

Driver Assistance Systems:

Available systems include ATTENTION ASSIST, COLLISION PREVENTION ASSIST, PARKTRONIC parking assistance, rearview camera, and optional adaptive cruise control (DISTRONIC PLUS) on some higher-spec models. The manual details the function and maintenance of these systems.

Connectivity Features:

Bluetooth for hands-free calling and audio streaming, USB ports for media playback and device charging, and optional Mercedes-Benz Apps integration. The manual assists with pairing devices and troubleshooting connectivity issues.

Lighting Technology:

Bi-Xenon headlamps with LED daytime running lights were common. Optional Intelligent Light System (ILS) provided adaptive cornering lights. The manual covers bulb replacement, headlight aiming, and troubleshooting of the lighting control modules.

🔧 Maintenance

Service Intervals:

Mercedes-Benz vehicles typically follow a flexible service schedule indicated by the 'ASSYST PLUS' system, which calculates service due dates based on driving conditions. Major services usually occur every 10,000 miles or 12 months, whichever comes first, including oil changes, filter replacements, and comprehensive inspections. The manual details the specific service types and intervals for the R172.

Engine Oil Specification:

Typically Mercedes-Benz specification MB 229.5 or MB 229.51 for gasoline engines, often a 0W-40 or 5W-40 synthetic oil. Specific viscosity and approval codes are provided in the manual for each engine variant.

Transmission Fluid Specification:

For the 7G-TRONIC PLUS, the specification is typically MB-Approval 236.15 (e.g., Shell Spirax S6 ATF 134 FE or equivalent). The 9G-TRONIC uses a different fluid. The manual will specify the exact fluid type and capacity for each transmission.

Coolant Specification:

Mercedes-Benz specification MB 325.0 or MB 326.0 (typically a silicate-free, blue-green ethylene glycol-based coolant).

Brake Fluid Specification:

DOT 4 specification, typically MB-Approval 331.0 (e.g., Pentosin DOT 4 LV or equivalent).

Common Issues:

Potential issues reported on the R172 SLK can include minor oil leaks from valve cover gaskets or oil filter housings, occasional issues with the vario-roof hydraulic system (though generally reliable), and potential electrical glitches or sensor faults as mileage increases. The manual provides diagnostic procedures for these and other potential problems.

Oil Filter Part Numbers:

Part numbers vary by engine. For example, a common oil filter for the 2.0L turbo engine might be A2701800109. The manual will provide exact part numbers for all serviceable filters (oil, air, cabin, fuel).

📚 Vehicle History

Brand Heritage:

Mercedes-Benz has a long and storied history in producing luxury vehicles and sports cars, dating back to the earliest automobiles. The 'SLK' nameplate, introduced in 1996, signifies a compact roadster in the Mercedes-Benz lineage, following in the spirit of earlier open-top cars.

Model Evolution R172:

The R172 generation, introduced for the 2011 model year, represented a significant evolution over its R171 predecessor. Key updates included the introduction of the vario-roof (retractable hardtop), a sharper and more modern design language, and advanced technologies such as the AIRSCARF neck-level heating system and various driver assistance systems. The 2017 model year saw the rebranding of the SLK to SLC in many markets.

Production Location:

The R172 SLK-Class was primarily manufactured at the Mercedes-Benz plant in Bremen, Germany.

🏆 Awards & Recognition

Recognitions General:

While the 2017 specific model year may not have individual awards listed, the R172 SLK-Class generation as a whole has been recognized for its design, comfort, and technological advancements by various automotive publications and organizations over its production run. It has consistently been praised for its premium feel and sporty driving dynamics within the roadster segment.