Market Position:
Targeted at Mercedes-Benz SL-Class (R129) owners and independent repair facilities seeking factory-level diagnostic and repair information for a luxury grand tourer.
Competitive Analysis:
Positions itself as the definitive, vehicle-specific resource, directly comparable to factory service manuals used by dealership technicians, offering superior detail over generic repair guides.
Key Features:
Vehicle-specific (not generic), technician-level detail, comprehensive A-Z coverage, step-by-step instructions, diagrams, illustrations, wiring schematics, printable format, digital convenience.
Systems Covered:
Maintenance, Engine, Control System, Mechanical, Fuel Service Specifications, Emission Control, Intake Exhaust Cooling, Lube, Ignition Starting Charging, Auto Transmission, Clutch, Manual Transmission, Transfer Propeller Shaft, Drive Shaft, Differential, Axle Suspension, Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering, Air Condition, Suppl Restraint System, Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Meter Audio/Visual, Horn, Windshield/Glass Mirror, Instrument Panel, Seat, Engine Hood/Door, Exterior & Interior, Electrical, Multiplex/Can Communication, and more.
Body Electrical:
Covers all body electrical systems including lighting (headlights, taillights, interior), power windows, central locking, mirrors, seat adjustment, instrument cluster, and related control modules.
Chassis Suspension:
Detailed coverage of front and rear suspension components, steering system, power steering pump and rack, wheel bearings, and alignment procedures.
Brake System:
Complete coverage of hydraulic brake system, brake calipers, rotors, pads, ABS modulator, brake booster, and parking brake system.
Procedures Included:
Step-by-step instructions, diagnostics, maintenance, service, repair, troubleshooting, component replacement, system checks, adjustments, and specifications.
Engine Overhaul:
Includes detailed procedures for engine disassembly, inspection, component replacement, reassembly, and tuning for both V8 and V12 variants relevant to the 2001 model year.
Suspension Repair:
Step-by-step guides for replacing control arms, ball joints, shock absorbers, springs, and performing steering system repairs.
Technical Depth:
Factory high-detail, vehicle-specific, technician-level repair information. Covers complete repair and maintenance.
Diagnostic Procedures:
Includes diagnostic trouble codes (DTCs), testing procedures for various sensors and actuators, and troubleshooting flowcharts for common electrical and mechanical faults.
Wiring Schematics:
Comprehensive, clear wiring diagrams for all vehicle systems, crucial for electrical diagnosis and repair.
Print Quality:
High-quality, printable pages with ability to blow up images and print enlarged copies.
Binding Type:
N/A (Digital - no physical binding)
Paper Type:
N/A (Digital - printable on demand)
Compatibility:
Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac compatible.
Required Software:
Adobe PDF Reader, Winzip (free online)
Engine Variants:
While the product name specifies '2001', the R129 generation saw various V8 and V12 engines throughout its production. For 2001, common engines include the M119 5.0L V8 and the M120 6.0L V12. Specific engine codes for 2001 are typically SL500 (e.g., R129.076 with M119.982 engine) and SL600 (e.g., R129.076 with M120.984 engine).
Horsepower Torque:
Approximate for 2001 models: SL500 (M119.982) ~315 hp, 354 lb-ft; SL600 (M120.984) ~389 hp, 420 lb-ft. Exact figures vary by market and specific sub-variant.
Fuel Injection:
Bosch Motronic Electronic Fuel Injection (EFI) with sequential port injection.
Coolant Type:
Mercedes-Benz specifications require a specific coolant mixture (e.g., MB 325.0 or similar). Refer to the manual for exact G48 or similar silicate-free, phosphate-free antifreeze concentration.
Oil Type:
Refer to the manual for specific MB 229.1, 229.3, or 229.5 approved synthetic engine oils (e.g., SAE 0W-40, 5W-40).
Transmission Type:
5-speed automatic transmission (e.g., 5G-Tronic, 722.6 variant).
Optional Transmission:
N/A for the R129 generation; exclusively automatic.
Transmission Features:
Electronically controlled, adaptive shift programs, torque converter lock-up.
Transmission Fluid Type:
MB 236.10 or MB 236.14 approved ATF (e.g., Pentosin ATF1, Fuchs Titan ATF 4134). Manual specifies exact capacity and procedure.
Length:
Approx. 4,509 mm (177.5 in)
Width:
Approx. 1,812 mm (71.3 in)
Height:
Approx. 1,301 mm (51.2 in)
Curb Weight:
Approx. 1,740 - 1,920 kg (3,836 - 4,233 lbs), depending on engine and options.
Gross Weight Rating:
Refer to vehicle specific VIN plate or manual for exact GVWR.
Standard Wheel Size:
Typically 16-inch or 17-inch alloy wheels.
Standard Tire Size:
e.g., 225/55 R16 or 225/55 R17 front, 245/45 R17 rear. Specific sizes vary by model and wheel option. Manual provides precise fitment.
Crash Test Results:
As a 2001 model, official NHTSA/IIHS ratings in the modern format may not be readily available or comparable. However, the R129 was engineered with advanced safety for its era, including reinforced A-pillars, integrated roll-bar system, and significant structural integrity.
Active Safety Features:
Anti-lock Braking System (ABS), Electronic Stability Program (ESP - likely standard on 2001 models), Traction Control System (ASR).
Passive Safety Features:
Dual front airbags, front side airbags, seatbelt pretensioners, reinforced chassis, crumple zones, pop-up roll bar.
Supplemental Restraint System:
SRS system including airbags and seat belt tensioners.
Infotainment System:
For 2001, typically a premium sound system with cassette/CD player, possibly with optional navigation. The manual covers diagnostics and repair of the audio system and antenna systems.
Driver Assistance Features:
Cruise control, potentially parking assist sensors (though less common for this year), and advanced ABS/ESP systems.
Connectivity Features:
Limited by modern standards. May include provisions for early cellular phones or CD changers. The manual covers the relevant wiring and modules.
Climate Control System:
Automatic climate control (THERMATIC or THERMOTRONIC) with dual-zone functionality. Manual details operation, diagnostics, and repair of AC system components, blower motor, control modules, and sensors.
Scheduled Maintenance:
The manual will detail Mercedes-Benz's 'Service A' and 'Service B' intervals, typically based on time, mileage, and driving conditions, managed by the car's Service Indicator (ASSYST) system. These can range from 7,500 to 15,000 miles or 12 months for minor services, with major services at higher intervals.
Brake Fluid Type:
DOT 4 or DOT 4 Plus brake fluid conforming to Mercedes-Benz specification 331.0.
Coolant Capacity:
Refer to manual, typically around 10-12 liters.
Windshield Wiper Fluid:
Appropriate windshield washer fluid, potentially with anti-freeze properties depending on climate.
Common Issues R129:
The manual would cover potential issues such as biodegradable wiring harness degradation (common in many Mercedes of this era), window regulator failures, ABC suspension (if equipped, though less common on base 2001 models compared to later ones), soft top hydraulic leaks, MAF sensor issues, and ignition coil failures. Detailed troubleshooting for these is provided.
