Market Segment:
Compact Luxury SUV
Target Audience:
Luxury buyers seeking practicality, off-road capability (optional 4MATIC), and Mercedes-Benz refinement in a smaller package
Key Competitors:
BMW X3, Audi Q5, Lexus RX, Acura RDX
Design:
Distinctive angular styling, compact yet robust appearance
Powertrain Options:
Range of efficient 4-cylinder and V6 gasoline engines, optional 4MATIC all-wheel drive
Interior Appointments:
Premium materials, comfortable seating, advanced technology for its time
Primary Coverage:
Complete workshop service and repair procedures
Model Variants Covered:
All engine types, transmission types, and trim levels within the 2012 X204 GLK-Class
Estimated Pages:
Thousands (comprehensive nature implies extensive documentation, actual count not provided but implied to be exhaustive)
Type:
Workshop Service Repair Manual
Language:
English (presumed based on typical availability for international markets and description)
Format:
Digital Downloadable (PDF)
Powertrain:
Engine mechanicals, fuel system, ignition system, exhaust system, cooling system, lubrication system
Drivetrain:
Transmission (automatic), transfer case, drive axles, differentials, all-wheel drive (4MATIC) system
Chassis:
Suspension system (front and rear), steering system, braking system (including ABS, ESP), wheels and tires
Electrical:
Vehicle electrical system, battery, charging system, starter, lighting system, instrumentation, power accessories, control modules (ECU/ECM, TCM, BCM, etc.)
Body:
Body structure, exterior panels, doors, hood, tailgate, interior trim, HVAC system, safety restraints (airbags, seatbelts)
Diagnostics:
Diagnostic trouble codes (DTCs), troubleshooting procedures, diagnostic tool usage
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication
Repair:
Component removal and installation, system repairs, part replacement
Troubleshooting:
Step-by-step diagnostic flowcharts, common problem diagnosis
Specifications:
Torque specifications, clearances, fluid capacities, electrical specifications
Wiring Diagrams:
Comprehensive electrical wiring schematics for all systems
Depth:
In-depth, from basic maintenance to complete engine and transmission overhauls, advanced diagnostics, and system component replacement
Searchability:
Searchable text content (typical for professional PDFs)
Printability:
Printable by page, chapter, or entire document
Binding:
Not applicable (digital format)
Paper Type:
Not applicable (digital format)
Software Requirements:
Adobe Reader (or compatible PDF viewer)
Device Compatibility:
All PC & MAC computers, tablets, smartphones
Engine Code Gasoline 4Cyl:
M271 (DE18LA / DE20LA - 1.8L/2.0L Turbocharged Inline-4)
Engine Code Gasoline V6:
M272 (3.5L Naturally Aspirated V6)
Engine Code Diesel:
OM651 (2.1L Turbocharged Inline-4 Diesel)
Horsepower Range:
Approx. 170 hp (GLK250 CDI) to 268 hp (GLK350)
Torque Range:
Approx. 258 lb-ft (GLK250 CDI) to 258 lb-ft (GLK350)
Fuel Delivery Gasoline:
Direct Injection (for M271.8xx and M271.9xx variants), Electronic Fuel Injection (EFI) for M272
Fuel System Diesel:
Common Rail Direct Injection (CDI)
ECU Type:
ME (Motor Elektronik) series ECUs (e.g., ME 2.8, ME 2.9 for gasoline), EDC (Elektronische Diesel Control) for diesel
Transmission Type Gasoline:
7-speed Automatic (7G-TRONIC PLUS)
Transmission Type Diesel:
7-speed Automatic (7G-TRONIC PLUS)
Drivetrain Options:
Rear-wheel drive (RWD), 4MATIC All-Wheel Drive (AWD)
Transmission Features:
Selectable drive modes (Comfort, Sport), manual shifting capability (Touchshift)
Length:
Approx. 4527 mm (178.2 in)
Width:
Approx. 1840 mm (72.4 in) (excluding mirrors)
Height:
Approx. 1685 mm (66.3 in)
Wheelbase:
Approx. 2755 mm (108.5 in)
Cargo Volume Rear Seats Up:
Approx. 450 liters (15.9 cu ft)
Cargo Volume Rear Seats Down:
Approx. 1550 liters (54.7 cu ft)
Curb Weight Range:
Approx. 1700 kg - 1850 kg (3748 lbs - 4079 lbs) depending on engine and drivetrain
NHTSA Rating:
Generally rated well in crash tests, typically achieving 4 or 5 stars in various categories (specific 2012 ratings may vary by region)
Electronic Stability Program:
Standard (ESP® - Electronic Stability Program)
Traction Control:
Standard (ASR - Acceleration Slip Regulation)
Antilock Braking System:
Standard (ABS - Anti-lock Braking System)
Brake Assist:
Standard (BAS - Brake Assist System)
Airbags:
Front airbags, front side airbags, window airbags (curtain airbags)
Seatbelts:
3-point inertia-reel seatbelts with belt tensioners and force limiters
Child Seat Anchors:
ISOFIX (standard on modern Mercedes-Benz vehicles)
Infotainment System:
Optional COMAND (Cockpit Management and Navigation Display) system
Audio Options:
Standard audio system, optional Harman Kardon surround sound system
Adaptive Cruise Control:
Optional (DISTRONIC PLUS)
Parking Assistance:
Optional Parking Assist ( PARKTRONIC ), rearview camera
Lane Keeping Assist:
Optional Lane Keeping Assist and Blind Spot Assist
Connectivity Features:
Bluetooth connectivity for hands-free calling and audio streaming, optional Media Interface for iPod/USB
Oil Change Interval:
Typically every 10,000 miles or 12 months, whichever comes first (often determined by the vehicle's 'Service A' or 'Service B' indicators)
Transmission Fluid Interval:
Often cited as 'lifetime' by Mercedes-Benz, but independent experts and many owners recommend replacement between 60,000 and 100,000 miles for optimal transmission longevity.
Engine Oil Type:
Various MB 229.5 or MB 229.51 specifications (e.g., Mobil 1 ESP 0W-40, Castrol EDGE Professional OE 0W-40). Specific viscosity depends on engine variant and climate.
Transmission Fluid Type:
MB 236.14 specification (e.g., Mercedes-Benz ATF) for 7G-TRONIC PLUS
Coolant Type:
MB 325.0 or MB 326.0 (Ethylene Glycol based, silicate-free)
Brake Fluid Type:
DOT 4 Plus (MB 331.0 specification)
Common Wear Items:
Struts/shocks, control arm bushings, sway bar links, exhaust system components, serpentine belt
Engine Specific Concerns:
Potential for oil leaks from valve cover gaskets or oil cooler seals; early M271 turbo engines may have timing chain tensioner concerns (though less prevalent in later variants).
Electrical System Quirks:
Occasional issues with sensors, window regulators, or the COMAND infotainment system. Water ingress in fuse box or SAM units can cause electrical gremlins.
Diesel Specific Concerns:
DPF (Diesel Particulate Filter) regeneration issues, glow plug failures, EGR valve problems in high-mileage examples.
Brand Focus:
Innovation, luxury, safety, and engineering excellence since 1886
Introduction Year:
2008 (Globally), 2009 (North America)
First Generation:
X204 (2008-2015)
Facelift:
A minor facelift occurred for the 2012 model year, often introducing subtle styling revisions and updated technology/features.
Assembly Location:
Bremen, Germany