This comprehensive service and repair manual is specifically designed for the 1998-2005 Mercedes M-Class (W163) and provides detailed, step-by-step instructions covering all models and repair aspects. This is the same manual used by technicians at Mercedes dealerships to maintain, service, diagnose, and repair your vehicle. The manual offers a wealth of information, including: * **Maintenance**: Learn about scheduled maintenance procedures, fluid checks, and replacement intervals. * **Engine**: Gain insights into engine operation, diagnostics, and repair procedures for various components like the cylinder head, valves, timing system, and more. * **Control System**: Understand the complexities of engine management, electronic control units, and their interactions. * **Mechanical**: Explore detailed instructions for repairing the transmission, drivetrain, suspension, steering, brakes, and all related components. * **Fuel Service Specifications**: Find specific fuel system information, including fuel pump, injectors, and fuel lines, along with troubleshooting guides. * **Emission Control**: Get detailed information on emissions systems, including catalytic converters, oxygen sensors, and exhaust system components. * **Intake Exhaust Cooling**: Learn about the intricate workings of the intake and exhaust systems, including cooling systems. * **Lube**: Understand lubrication systems, types of oil, and proper lubrication procedures. * **Ignition Starting Charging**: Explore the intricacies of ignition systems, starting systems, and charging systems, including troubleshooting and repair techniques. * **Auto Transmission Clutch**: Discover the inner workings of automatic transmissions, including clutch systems, and learn how to diagnose and repair them. * **Manual Transmission**: Gain knowledge of manual transmissions, including troubleshooting and repair methods for various components. * **Transfer Propeller Shaft**: Understand the transfer case and propeller shaft functions and how to handle repairs. * **Drive Shaft**: Learn about drive shaft components, maintenance, and repair procedures. * **Differential**: Explore the different types of differentials used in the M-Class and delve into their maintenance and repair. * **Axle Suspension**: Dive deep into the axle and suspension systems, including repair and maintenance procedures. * **Tire & Wheel**: Get detailed information about tires, wheels, and their maintenance requirements. * **Brake Control**: Explore the brake control system, including ABS and electronic brake systems. * **Brake**: Understand brake system components, troubleshooting, and repair methods. * **Parking Brake**: Learn how to diagnose and repair the parking brake system. * **Steering Column**: Gain insight into steering column components, repair, and maintenance. * **Power Steering**: Explore the power steering system, including troubleshooting and repair. * **Air Condition**: Understand the air conditioning system, including components, diagnostics, and repair. * **Suppl Restraint System**: Learn about the supplemental restraint system, including airbags and seatbelts. * **Seat Belt**: Discover the workings of the seat belt system, including troubleshooting and repair. * **Engine Immobilizer**: Gain understanding of the engine immobilizer system and its functions. * **Cruise Control**: Explore the cruise control system, including troubleshooting and repair procedures. * **Wiper & Washer**: Learn about the wiper and washer systems, including components and repair. * **Door Lock**: Understand door lock systems, including troubleshooting and repair methods. * **Meter Audio/Visual**: Get detailed information about the instrument cluster, including gauges and warning lights. * **Horn**: Learn how the horn system operates and how to troubleshoot and repair it. * **Windshield/Glass Mirror**: Explore windshield, glass, and mirror components, including repair and replacement. * **Instrument Panel**: Understand the instrument panel, including components and repair procedures. * **Seat**: Explore the various seat components, adjustments, and repair methods. * **Engine Hood/ Door**: Learn about engine hood and door components, including troubleshooting and repair. * **Exterior & Interior**: Get detailed information on the M-Class's exterior and interior trim, including repair and replacement. * **Electrical**: Dive deep into the electrical system, including wiring diagrams, troubleshooting, and repair. * **Multiplex/ Can Communication**: Understand the complex multiplex and CAN communication systems within the vehicle. This comprehensive manual empowers you to handle a wide range of repairs and maintenance procedures with confidence.

The 1998-2005 Mercedes-Benz M-Class (W163) marked a pivotal moment for the German automaker's foray into the burgeoning Sport Utility Vehicle (SUV) market. Introduced in 1997 as a 1998 model year vehicle, the first-generation M-Class was a groundbreaking offering that aimed to combine the refined luxury and engineering prowess of Mercedes-Benz with the practicality and ruggedness of an SUV. Built on a modified version of the W210 E-Class platform, the W163 sported a unibody construction, offering a balance of strength and agility. It featured a range of powerful V6 and V8 engines, including the groundbreaking 3.2-liter V6 diesel engine, catering to a diverse audience seeking both performance and fuel efficiency. The M-Class was available in various trim levels, from the base ML320 to the luxurious ML55 AMG, each offering a distinct blend of features and capabilities. The W163's success was built on its blend of on-road comfort and off-road capability. Its luxurious interior featured comfortable seating, premium materials, and advanced technology for its time. The M-Class offered a sophisticated suspension system that delivered a smooth and composed ride on paved surfaces while still providing decent ground clearance and off-road capability. The 4MATIC all-wheel drive system, with its variable torque distribution, further enhanced its traction and handling in various conditions.Despite its innovative design and technological advancements, the W163 M-Class was not without its issues. Some owners reported reliability problems with the electronic systems, particularly the air suspension and transmission. However, the M-Class's overall positive reputation, combined with the brand's strong service network, helped maintain its popularity throughout its production run. The W163 paved the way for the success of the M-Class lineup, establishing Mercedes-Benz as a prominent player in the luxury SUV segment.