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The B6 and B7 versions of the Volkswagen Passat are front-engine large family cars produced by Volkswagen, a German automaker. The B6 line of the Passat was produced between 2005 and 2010, and the B7 line was produced between 2010 and 2015 as a facelift of the B6 line.

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What is the issue?

what I noticed with my radiator fans is that it would run constantly on high if the ambient air temp sensor isn't plugged in but if I plug it in the fans don't turn on not even during cold start. All of the relays and fuses are operating but can't find the issue.

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@willx do the fans eventually turn on while you run the engine? What exact year and engine size is your Passat?

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No they won't and it's a 2015 1.8

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I would take it to an AutoZone and get a free computer readout to try to isolate the problem.

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