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.
2009 Smart Fortwo PureFACTORY OEM SERVICE PROCEDURE
Electrical System - Engine (Coupe)
- Maintenance
- Testing & Repair
- Testing and repair work: Smart: Electrical system - engine - AR15.00-Z-9132CB
- Remove/install ignition coils - AR15.12-P-2003MCU
- Remove/install crankshaft position sensor - AR15.12-P-2133MCU
- Remove/install camshaft position sensor - AR15.12-P-2140MCU
- Remove/install knock sensor - AR15.12-P-2185MCU
- Disconnect, connect engine wiring harness at engine side - AR15.18-P-1000-01MCV
- Disconnect, connect engine wiring harness at vehicle side - AR15.18-P-1000-02MCU
- Unfasten/fasten charge current line on the engine side - AR15.18-P-2000-01MCU
- Remove/install starter - AR15.30-P-7100MCU
- Remove/install alternator - AR15.40-P-5032MCU
- Remove/install coolant temperature sensor - AR15.60-P-2711MCU
- Safety Precautions
- Torque Specifications
- Test & Adjustment Values
- Basic Knowledge
- Component description for ignition coils - GF15.10-P-2100MCC
- On-board electrical system power supply Location of components - GF15.40-P-0001-02MCU
- On-board electrical system power supply, function - GF15.40-P-0001MCU
- Table of contents for function description On-board electrical system power supply - GF15.40-P-0999MCU
- Component description for the alternator - GF15.40-P-2000MCU
- Overview of system components On-board electrical system power supply - GF15.40-P-9999MCU
- Wiring Diagrams
- Special Tools
Factory Service Tools
Use the Manual With the Right Hardware
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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.