Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
External Pages
's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle. Different car Section 1 (Star Diagnostic System -- S-Class (221)) Section 2 (Fasteners & Wiring - General Information -- S-Class (221)) Section 3 (Engine -- General Information -- S-Class (221)) Section 4 (Crank Assembly -- S-Class (221)) Section 5 (Engine Timing -- S-Class (221)) Section 6 (Mixture Formation -- General Information -- S-Class (221)) Section 7 (Air Intake, Turbo Charging -- S-Class (221)) Section 8 (Exhaust Manifolds, Emission Control -- S-Class (221)) Section 9 (Electrical - Engine -- S-Class (221)) Section 10 (Lubrication, Oil Cooling -- S-Class (221)) Section 11 (Engine Cooling System -- S-Class (221)) Section 12 (Engine Suspension -- S-Class) (221)) Section 13 (Throttle Control, Speed Control Systems -- General Information -- S-Class (221)) Section 14 (Fuel System -- S-Class (221)) Section 15 (Exhaust System -- S-Class (221)) Section 16 (Manual Transmission -- S-Class (221)) Section 17 (Frame, Trailer Operation -- S-Class (221)) Section 18 (Suspension Control Systems -- General Information -- S-Class (221)) Section 19 (Rear Axle -- S-Class (221)) Section 20 (Tires -- General Information -- S-Class (221)) Section 21 (Brakes -- General Information -- S-Class (221)) Section 22 (Brakes - Pneumatic System -- S-Class (221)) Section 23 (Steering - Gear Evaluation -- S-Class (221)) Section 24 (Battery & Control Units - General Information - S-Class (221)) Section 25 (Body) Section 26 (Front End & Firewall) Section 27 (Side Wall - GEN'L Info - S-Class (221)) Section 28 (Rear Wall & Rear End - GEN'L Info - S-Class (221)) Section 29 (Roof - GEN'L Info - S-Class (221)) Section 30 (Windows -- S-Class (221)) Section 31 (Interior Equipment -- S-Class (221)) Section 32 (Sliding Roof, Soft Top -- S-Class (221)) Section 33 (Headlights -- General Information -- S-Class (221)) Section 34 (Climate Control -- General Information -- S-Class (221)) Section 35 (Emergency Equipment -- S-Class (221)) Section 36 (Detachable Body Components -- S-Class (221)) Section 37 (Restraints -- General Information -- S-Class (221)) Section 38 (Body Sealing, Corrosion Protection -- S-Class (221)) Section 39 (Paintwork -- S-Class (221)) Section 40 (Overall Vehicle -- Maintenance -- S-Class (221)) Section 41 (Overall Vehicle -- Testing & Repair -- S-Class (221)) Section 42 (Suspension -- Testing & Repair -- S-Class (221)) Section 43 (Front Axle -- S-Class (221)) Section 44 (Wheels, Chassis Alignment Check -- Testing & Repair -- S-Class (221)) Section 45 (Brakes -- Testing & Repair -- S-Class (221)) Section 46 (Steering -- Testing & Repair -- S-Class (221)) Section 47 (Electrical -- Testing & Repair -- S-Class (221)) Section 48 (Electrical System - Testing & Repair -- S-Class (221)) Section 49 (Climate Control -- Testing & Repair -- S-Class (221)) Section 50 (Mixture Formation -- Testing & Repair -- S-Class (221)) Section 51 (Engine -- Testing & Repair -- S-Class (221)) Section 52 (Air Compressor, Belt Drives -- S-Class (221)) Section 53 (Throttle Control, Speed Control Systems -- Testing & Repair -- S-Class (221)) Section 54 (Transfer Case -- S-Class (221)) Section 55 (Pedal Assembly -- S-Class (221)) Section 56 (Propeller Shaft -- S-Class (221)) Section 57 (Substructure -- S-Class (221)) Section 58 (Doors & Windows -- Testing & Repair -- S-Class (221)) Section 59 (Anti-Theft & Central Locking -- Testing & Repair -- S-Class (221)) Section 60 (Seats, Restraint Systems -- Testing & Repair -- S-Class (221)) Section 61 (Automatic Transmission -- Testing & Repair -- S-Class (221) - 2 Of 3) Section 62 (Overall Vehicle -- Safety Precautions -- S-Class (221)) Section 63 (Overall Vehicle -- Basic Knowledge -- S-Class (221) - 3 Of 4) Section 64 (Wheels & Tires -- Maintenance -- S-Class (221)) Section 65 (Tools -- S-Class (221)) Section 66 (Mixture Formation -- Safety Precautions -- S-Class (221)) Section 67 (Throttle Control, Speed Control Systems -- Laser Beam Safety Precautions -- S-Class (221)) Section 68 (Clutch -- S-Class (221)) Section 69 (Suspension -- Safety Precautions -- S-Class (221)) Section 70 (TIREFIT Emulsion -- Safety Precautions -- S-Class (221)) Section 71 (Brakes -- Safety Precautions -- S-Class (221)) Section 72 (Steering -- Fluid Safety Precautions -- S-Class (221)) Section 73 (Electrical System -- Safety Precautions -- S-Class (221)) Section 74 (Electrical - Safety Precautions -- S-Class (221)) Section 75 (Climate Control -- Safety Precautions -- S-Class (221)) Section 76 (Restraint Systems -- Safety Precautions -- S-Class (221)) Section 77 (Engine -- Torque Specifications -- S-Class (221)) Section 78 (Wheels, Chassis Alignment Check -- Torque Specifications -- S-Class (221)) Section 79 (Brakes -- Torque Specifications -- S-Class (221)) Section 80 (Climate Control -- Torque Specifications -- S-Class (221)) Section 81 (Capacities & Specifications -- S-Class (221) - 1 Of 3) Section 82 (Capacities & Specifications -- S-Class (221) - 2 Of 3) Section 83 (Engine -- Test & Adjustment Values -- S-Class (221)) Section 84 (Wheels, Chassis Alignment Check -- Test & Adjustment Values -- S-Class (221)) Section 85 (Brakes -- Test & Adjustment Values -- S-Class (221)) Section 86 (Climate Control -- Capacities & Specifications -- S-Class (221)) Section 87 (Overall Vehicle -- Basic Knowledge -- S-Class (221) - 4 Of 4) Section 88 (Throttle Control, Speed Control Systems -- Basic Knowledge -- S-Class (221)) Section 89 (Suspension -- Basic Knowledge -- S-Class (221)) Section 90 (Wheel/Tire Combination & Tire Pressure Monitoring -- Basic Knowledge -- S-Class (221)) Section 91 (Tire Pressure Monitor -- Basic Knowledge -- S-Class (221)) Section 92 (Brakes -- Basic Knowledge -- S-Class (221)) Section 93 (Steering -- Basic Knowledge -- S-Class (221)) Section 94 (Electrical -- Basic Knowledge -- S-Class (221)) Section 95 (Collision Avoidance, Display/Warning Messages, Horns & Entertainment -- Basic Knowledge -- S-Class (221)) Section 96 (Collision Avoidance, Horns, Monitoring -- Basic Knowledge -- S-Class (221)) Section 97 (Door Control Unit & Power Windows -- Basic Knowledge -- S-Class (221)) Section 98 (Anti-Theft & Central Locking -- Basic Knowledge -- S-Class (221)) Section 99 (Lighting -- Basic Knowledge -- S-Class (221)) Section 100 (Anti-Theft, Lighting, Satellite Radio & Wiper/Washer -- Basic Knowledge -- S-Class (221)) Section 101 (Entertainment & Navigation - S-Class (221)) Section 102 (COMAND, Entertainment & Navigation -- Basic Knowledge -- S-Class (221)) Section 103 (Entertainment, Navigation & Phone - S-Class (221)) Section 104 (Climate Control -- Basic Knowledge -- S-Class (221)) Section 105 (Seats, Restraint Systems -- Basic Knowledge -- S-Class (221)) Section 106 (Automatic Transmission -- Basic Knowledge -- S-Class (221)) Section 107 (Overall Vehicle -- Basic Knowledge -- S-Class (221) - 2 Of 4) Section 108 (Overall Vehicle -- OEM Wiring Diagrams -- S-Class (221)) Section 109 (Emergency Fire EXTINGUISING System - OEM Forms -- S-Class (221)) Section 110 (Scrapping Gas-Filled Hydraulic COMPONETS -- S-Class (221)) Section 111 (OEM User Information -- S-Class (221)) Section 112 (Mixture Formation -- Wiring Diagrams -- S-Class (221)) Section 113 (Throttle Control, Speed Control Systems -- Wiring Diagrams -- S-Class (221)) Section 114 (Automatic Transmission -- OEM Wiring Diagrams -- S-Class (221)) Section 115 (Suspension -- OEM Wiring Diagrams -- S-Class (221)) Section 116 (Wheels, Chassis Alignment Check -- OEM Wiring Diagrams -- S-Class (221)) Section 117 (Brakes -- OEM Wiring Di
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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