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 variant/trim Section 1 (Transmission - Removal & Installation (Aw55-50/51)) Different car Section 1 (System Wiring Diagrams) Section 2 (System Wiring Diagrams) Section 3 (System Wiring Diagrams) Section 4 (System Wiring Diagrams) Section 5 (Lighting - General Diagnostics And Tests) Section 6 (Headlamp Control Module - Signal Specification) Section 7 (Lighting - Headlamp Control Module (HCM)) Section 8 (Parking Assistance - Specifications, Electrical/Electronic) Section 9 (Rear Axle, Drive Shafts - Component Location) Section 10 (Differential Electronic Module (DEM) - Vehicle Communication) Section 11 (Cooling System - General Safety Information) Section 12 (Seats - Overhaul Instructions) Section 13 (Climate Units - Overhaul Instructions) Section 14 (Trip Computer - Installation Instructions) Section 15 (Coolant Heater, Auxiliary Belt TENSIONER - Removal & Installation)
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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.