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 (Engine Performance Wiring Diagrams) Section 2 (Computer Relearn Procedures) Section 3 (Abs/Traction Control - Repair (E46)) Section 4 (Engine Controls - Service & Adjustment Specifications) Section 5 (Engine Controls - On-Vehicle Adjustments) Section 6 (Engine Controls - Basic Diagnostic Procedures) Section 7 (Engine Controls - Trouble Shooting - No Codes) Section 8 (Engine Controls - System & Component Testing) Section 9 (Engine Controls - Removal, Overhaul & Installation) Section 10 (Engine Performance Wiring Diagrams) Section 11 (Computer Relearn Procedures) Section 12 (Electrical Component Locator) Section 13 (Electrical Component Locator) Section 14 (Air Bag Restraint Systems) Section 15 (A/C-Heater System) Section 16 (System Wiring Diagrams) Section 17 (System Wiring Diagrams) Section 18 (System Wiring Diagrams) Section 19 (System Wiring Diagrams) Section 20 (System Wiring Diagrams) Section 21 (System Wiring Diagrams) Section 22 (System Wiring Diagrams) Section 23 (System Wiring Diagrams) Section 24 (System Wiring Diagrams) Section 25 (System Wiring Diagrams - 2D Convertible) Section 26 (System Wiring Diagrams (4 Door )) Section 27 (System Wiring Diagrams) Section 28 (System Wiring Diagrams) Section 29 (System Wiring Diagrams) Section 30 (System Wiring Diagrams) Section 31 (System Wiring Diagrams) Section 32 (System Wiring Diagrams) Section 33 (System Wiring Diagrams) Section 34 (System Wiring Diagrams Sedan) Section 35 (System Wiring Diagrams - 2D Convertible) Section 36 (System Wiring Diagrams) Section 37 (System Wiring Diagrams) Section 38 (System Wiring Diagrams - 2D Convertible) Section 39 (System Wiring Diagrams) Section 40 (System Wiring Diagrams) Section 41 (System Wiring Diagrams Convertible) Section 42 (System Wiring Diagrams - 2D Convertible) Section 43 (System Wiring Diagrams) Section 44 (System Wiring Diagrams) Section 45 (System Wiring Diagrams) Section 46 (System Wiring Diagrams) Section 47 (System Wiring Diagrams - 2D Convertible) Section 48 (System Wiring Diagrams - 2D Convertible) Section 49 (System Wiring Diagrams) Section 50 (System Wiring Diagrams - 2D Convertible) Section 51 (System Wiring Diagrams - 2D Convertible) Section 52 (System Wiring Diagrams) Section 53 (System Wiring Diagrams) Section 54 (System Wiring Diagrams) Section 55 (System Wiring Diagrams) Section 56 (System Wiring Diagrams) Section 57 (System Wiring Diagrams) Section 58 (System Wiring Diagrams) Section 59 (System Wiring Diagrams) Section 60 (System Wiring Diagrams - 2D Convertible) Section 61 (System Wiring Diagrams) Section 62 (System Wiring Diagrams) Section 63 (System Wiring Diagrams) Section 64 (System Wiring Diagrams - 2D Convertible) Section 65 (System Wiring Diagrams) Section 66 (System Wiring Diagrams) Section 67 (System Wiring Diagrams) Section 68 (System Wiring Diagrams) Section 69 (Computer Relearn Procedures) Section 70 (Engine - Repair (6-CYL)) Section 71 (Air Bag Restraint System) Section 72 (Front Axle - Repair - E46) Section 73 (Engine Controls - Removal, Overhaul & Installation - 2 Of 2) Section 74 (System Wiring Diagrams) Section 75 (Computer Relearn Procedures - Import) Section 76 (Air Bag Restraint Systems) Section 77 (Air Bag Restraint Systems) Section 78 (Rear Suspension - Repair - E46) Section 79 (Engine Controls - Service & Adjustment Specifications) Section 80 (Engine Controls - On-Vehicle Adjustments) Section 81 (Engine Controls - Basic Diagnostic Procedures) Section 82 (Diagnostic Trouble Codes With Test Charts) Section 83 (Engine Controls - Trouble Shooting - No Codes) Section 84 (Engine Controls - System & Component Testing) Section 85 (Engine Controls - Pin Voltage Charts) Section 86 (Steering Column - Repair) Section 87 (Power Steering System - Repair) Section 88 (Air Bag Deactivation Procedures) Section 89 (Cabin Air Filter - E46) Section 90 (Diagnostic Trouble Codes With Test Charts) Section 91 (Diagnostic Trouble Codes With Test Charts) Section 92 (Computer Relearn Procedures) Section 93 (Diagnostic Trouble Codes With Test Charts) Section 94 (Air Bag Restraint Systems) Section 95 (Brakes - Repair (E46)) Section 96 (Starter - Repair (2WD)) Section 97 (Starter - Repair) Section 98 (Cooling Fans - Repair (E46)) Section 99 (Cabin Air Filter) Section 100 (Manual Transmission - Servicing) Section 101 (Standard/Automatic Transmission - Overview) Section 102 (Transmission - Overview) Section 103 (Removal & Installation (A5S 325Z)) Section 104 (Removal & Installation (S5D 200G/S5D 250G/M52TU/M54)) Section 105 (Air Bag Restraint Systems) Section 106 (Removal & Installation - M3 (S6S 420G SMG)) Section 107 (REMOVAL & INSTALLATION - 330i, xi & Ci (GS6 37BZ)) Section 108 (On-Vehicle Servicing - (A5S 360R/390R)) Section 109 (Removal & Installation (A5S 3690R/390R)) Section 110 (On-Vehicle Servicing - (S5D 200G/250G & GS6S37BZ SMG)) Section 111 (On-Vehicle Servicing - (S5DZ & GS6X37BZ)) Section 112 (Electrical Component Locator) Section 113 (Electrical Component Locator) Section 114 (Maintenance And General Information - Repair Instructions) Section 115 (Engine - Repair (S54)) Section 116 (Engine Electrical System - Repair Instructions) Section 117 (Fuel System - Repair Instructions) Section 118 (Cooling System - Repair Instructions) Section 119 (Exhaust System - Repair Instructions) Section 120 (Clutch - Repair Instructions) Section 121 (Manual Transmission - Repair Instructions) Section 122 (Propeller Shaft - Repair Instructions) Section 123 (Wheel And Tires - Repair Instructions) Section 124 (Body Equipment - Repair Instructions) Section 125 (General Electrical System - Repair Instructions) Section 126 (Instruments - Repair Instructions) Section 127 (Engine - Technical Data) Section 128 (Engine Electrical System - Technical Data) Section 129 (Fuel System - Technical Data) Section 130 (Manual Transmission - Technical Data) Section 131 (Propeller Shaft - Technical Data) Section 132 (Wheel And Tires - Technical Data) Section 133 (Maintenance And General Information - Tightening Torques) Section 134 (Engine - Tightening Torques) Section 135 (Engine Electrical System - Tightening Torques) Section 136 (Fuel System - Tightening Torques) Section 137 (Cooling System - Tightening Torques) Section 138 (Clutch - Tightening Torques) Section 139 (Manual Transmission - Tightening Torques) Section 140 (Propeller Shaft - Tightening Torques) Section 141 (Wheel And Tires - Tightening Torques) Section 142 (Body Equipment - Tightening Torques) Section 143 (General Electrical System - Tightening Torques) Section 144 (Cooling System - Technical Data) Section 145 (Maintenance And General Information - Special Tools) Section 146 (Engine- Special Tools - M-Coupe & Z3 (E36)) Section 147 (Clutch - Special Tools - M-Coupe/Roadster & Z3 (E36)) Section 148 (MAINTENANCE - REPAIR INSTRUCTIONS - 330i, 330Ci, 330xi (M54/E46)) Section 149 (Engine - Repair (6-CYL)) Section 150 (Engine Electrical System - Repair) Section 151 (Fuel System - Repair Instructions) Section 152 (Fuel Supply System - Repair) Section 153 (Cooling System - Repair Instructions) Section 154 (Exhaust System - Repair) Section 155 (Engine And Transmission Mounting - Repair) Section 156 (Propeller Shaft - Repair - E46) Section 157 (Body Equipment - Repair) Section 158 (Seats - Repair) Section 159 (Slide/Tilt Roof - Repair) Section 160 (General Electrical System - Repair) Section 161 (Lights - Repair) Section 162 (Heating And Air Conditioning - Repair) Section 163 (Electrical Dri
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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