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.
2008 Smart Fortwo PureFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| Automated Manual Transmission Control Unit (N15/6) | Under driver's seat. See Figure. |
| Electronic Selector Lever Module Control Unit (N15/5) | Under center console. See Figure. |
| ESP Control Unit (N47-5) | Left center of vehicle undercarriage. See Figure. |
| Front HS (SIH) Control Unit (N25/5) | Left side of dash. See Figure. |
| Heating & Air Conditioning Operating Unit (N23) | Center of dash. See Figure. |
| ME-SFI (ME) Control Unit (N3/10) | Right rear of luggage compartment. See Figure. |
| Power Window Convenience Feature Control Unit (N57/2) | Left side of dash. See Figure. |
| Restraints Systems Control Unit (N2/7) | Center of dash. See Figure. |
| Steering Assist Control Unit (N68) | Behind instrument cluster. See Figure. |
| TPM (RDK) Control Unit (N88) | Left side of dash. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.