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Discussion Starter · #1 ·
any one plz help me with this issue bcoz in my country Mercedes SSS is a slaughter house
 

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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

1Bracket
2Electrical connector
3Cylinder head
B11/4Coolant temperature sensor
Y32Secondary air injection pump switchover valve
:)
 
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