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):
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 |
