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Discussion Starter · #1 ·
Hey there, I've got a coolant leak on our 2010 Tiguan with the 2.0 tsi. I think I've found the sensor that its leaking from, but can't figure out what the sensor is called anywhere online. From what I can see, it is not the coolant temp sensor, and I can't find any other sensors in the coolant system. Its on the forward facing side of the engine, just to the passenger side of the bellhousing. added a picture to try to identify. Thanks for any help.
coolant leak.jpg
 

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I have the same issue. Any fixes? The black box is the secondary oil seperator. To my knowledge no coolant should be going through there. Not sure what the sensor is either.
 
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