Radiator Fan dosnt work automatically in my smart for two 2007 model
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Welcome to SCoA! If you can have the car scanned for OBD codes that would help. Assuming the radiator fan is working (and your 2007 is a 451 model smart) there are two things controlling fan operation:
The fan relay at the bottom of the SAM (could look like either of these):
![64906]()
![64907]()
or the coolant temperature sensor located on the engine block:
![64908]()
The fan relay at the bottom of the SAM (could look like either of these):
or the coolant temperature sensor located on the engine block:
| 1 | Bracket |
| 2 | Electrical connector |
| 3 | Cylinder head |
| B11/4 | Coolant temperature sensor |
| Y32 | Secondary air injection pump switchover valve |
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