This comprehensive 1989 Mercedes W126 SE Service and Repair Manual provides detailed instructions, diagrams, illustrations, wiring schematics, and specifications to help you maintain, service, diagnose, and repair your vehicle. The manual covers all models and repairs, from simple maintenance tasks to complex engine work. It's the same information used by Mercedes technicians at dealerships, giving you the most accurate and up-to-date information available.

The manual includes detailed information on a wide range of topics, including:

* **Maintenance:** Regular maintenance schedules, fluid changes, filter replacements, and more.
* **Engine:** Detailed information on the engine, including cylinder heads, valves, timing, and fuel systems.
* **Control System:** Understanding the electronic control systems, including engine management, emissions control, and comfort features.
* **Mechanical:** Comprehensive coverage of the drivetrain, including the transmission, axles, suspension, and steering systems.
* **Fuel Service Specifications:** Precise data on fuel types, pressures, and adjustments.
* **Emission Control:** Guidance on emissions systems, including catalytic converters, oxygen sensors, and evaporative systems.
* **Intake, Exhaust, Cooling:** Detailed information on the intake and exhaust systems, including manifolds, turbochargers, and cooling systems.
* **Lube:** Recommendations for lubricants, including oils, greases, and fluids.
* **Ignition, Starting, Charging:** Detailed information on the ignition system, starter motor, and charging system.
* **Auto Transmission, Clutch, and Manual Transmission:** Comprehensive guidance on the transmission systems, including both automatic and manual transmissions.
* **Transfer Propeller Shaft, Drive Shaft, Differential, Axle, Suspension:** Detailed explanations of the drivetrain components and their operation.
* **Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering:** Complete information on the braking, steering, and wheel systems.
* **Air Condition, Suppl Restraint System, Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer:** Comprehensive information on comfort and safety systems.
* **Door Lock, Meter Audio/Visual, Horn, Windshield/Glass Mirror, Instrument Panel, Seat, Engine Hood/ Door, Exterior & Interior:** Detailed guidance on bodywork and interior components.
* **Electrical, Multiplex/ Can Communication:** Comprehensive information on the vehicle's electrical systems.

With this manual, you'll have everything you need to keep your 1989 Mercedes W126 SE running smoothly for years to come.

The 1989 Mercedes-Benz W126 SE is a classic example of German engineering and automotive luxury, representing the pinnacle of the marque's craftsmanship during its era. The W126 chassis, introduced in 1979, marked a significant departure from its predecessor, the W116, offering a more aerodynamic and refined design. The "SE" designation signified the "Sonderklasse" or "special class," indicating a top-of-the-line model featuring luxurious appointments, advanced technology, and powerful engine options. The 1989 model year saw subtle updates to the W126, including revised trim, updated interior materials, and enhancements to the already robust safety features. Depending on the specific model, the W126 SE could boast a range of powerful engines, including the iconic 5.0-liter V8, the potent 5.6-liter V8, or the flagship 5.6-liter turbocharged V8. All engines were renowned for their smooth power delivery and exceptional durability, complemented by a sophisticated suspension system that provided a comfortable and controlled ride.

Beyond the mechanical prowess, the 1989 Mercedes-Benz W126 SE exuded an aura of timeless elegance. The opulent interior featured meticulously crafted leather upholstery, plush carpeting, and intricate wood trim. Advanced technology, such as power windows, power seats, and a sophisticated climate control system, provided a level of comfort and convenience that was unparalleled for its time. The W126 SE became a symbol of success and sophistication, attracting discerning drivers who appreciated the blend of luxury, performance, and engineering excellence that only Mercedes-Benz could offer. Today, the W126 SE remains a sought-after classic, appreciated by collectors and enthusiasts for its timeless elegance, exceptional build quality, and enduring charm. The 1989 Mercedes-Benz W126 SE Service and Repair Manual serves as an indispensable resource for owners and mechanics alike, providing detailed information on maintenance, troubleshooting, and repair procedures for this iconic vehicle.