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1999 C280, 2000 C280, 2000 C230K,2011 C300
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660 Posts
Those are pretty good pics. The top three solder joints look like there is some cracking. They certainly don't look perfect like the lower 3.

The trick to soldering is don't forget the flux.
 

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W202 c230 Sedan 1998
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12 Posts
Discussion Starter #22
Thanks! I think I’ll solder them eventually. Tried without flux the other day and it didn’t stick at all. At least the car is running again
 

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'92 W124 230E Auto
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188 Posts
As suggested by khomer2, the solder joints look like they're no longer making adequate contact, re-soldering them with flux should help). You need to have enough heat to melt the solder and bond with the board/pins.
 
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