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Figures › Fortwo (450) › Electrical › Manual transmission electrical function diagram showing

Manual transmission electrical function diagram showing airbag squibs, restraint switches, and control module interconnections.

Wiring schematic with component callouts for airbag system and seat belt restraint circuits.

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Chassis
Fortwo (450)
System
Electrical · ECU / sensors
Figure type
Wiring diagram
Source
2007-2014 smart (450 451 452 454) - Workshop Repair Manual, page 4448 Open manual →

Parts referenced

  • B481 — Left airbag module
  • B482 — Right airbag module
  • A53 — Left airbag assembly
  • A54 — Right airbag assembly
  • R12/1 — Left emergency tensioning retractor squib
  • R12/2 — Right emergency tensioning retractor squib
  • R12/13 — Driver airbag ignition squib 1
  • R12/14 — Driver airbag ignition squib 2
  • R12/20 — Driver head/thoraxbag squib
  • R12/21 — Front passenger head/thoraxbag squib
  • R12/4 — Front passenger airbag ignition squib 1
  • R12/5 — Front passenger airbag ignition squib 2
  • S68/3 — Driver-side seat belt buckle restraint systems switch
  • S68/4 — Passenger-side seat belt buckle restraint switch
  • X11/4 — Data link connector
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← Borg-Warner synchronization components and manualManual transmission electrical function diagram 2 of 2 →

See all Electrical figures for the Fortwo (450), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.

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