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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW Passat Family (NMS and B7) TDIs (2012+)

VW Passat Family (NMS and B7) TDIs (2012+) Discussion area for the 2012+ Passat TDI (North American and rest of world versions versions). The North American model was previously codenamed NMS (New Midsize Sedan) and the version the rest of the world gets is sometimes referred to as B7.

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Old January 10th, 2016, 21:48   #1
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Join Date: Aug 2006
Location: Northern Colorado Front Range
Default Heater core clog = leaking?

Had core replaced a year ago on the '14 Passat for cold passenger side air. Dealer did not flush system. It's doing it again and today I noticed maybe an ounce of coolant under car. Going in Tuesday to get core replaced again. Need to know if this clogging could/has caused leaks elsewhere in system. Anybody run into this?

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Old January 11th, 2016, 06:04   #2
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Join Date: Mar 2003
Location: South Central Minnesota
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Same issue. I had mine replaced last year about this same time. The replacement has now clogged and the dealership is waiting on back-ordered parts to get the new one installed. Which up here sucks, as it was -9 F this morning, so a nice chill ride to work (thank God for heated seats and electric auxiliary!). Anyway, mine developed a leak at the firewall about the time the HC failed. Its minimal leakage, but as far as I can see it is due to a bad fitting or slight kink on the inlet side. I am simply keeping an eye on coolant level until they can get the HC replaced and inlet issue addressed.

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