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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 October 24th, 2012, 19:30   #1
TurboDieselPoint
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Default Cabin Air Filter

Ok, just curious, is the cabin filter in the Passat located BEFORE the A/C evaporator and the heater core so that it will keep crap from collecting in the fins on both of them? Where exactly is it located?

Thanks in advance!
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Old October 24th, 2012, 22:56   #2
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Yes. The cabin filter is located above the passenger footwell trim panel in the a/c unit. It is removed from the bottom of the assembly after removing an access panel on the a/c heater unit. The filter is placed between the fan/outside air intake and the heater and a/c cores. It also is equipped with activated charcoal as part of the filter element.
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Old October 25th, 2012, 05:17   #3
Ace Deprave
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I was recently wondering about this myself. Sounds like it's easy to get to...my 2008 Mazdaspeed3's cabin filter was a huge pain to get to...I had to remove part of the dash, the glove compartment, and an assortment of other things to access it. I think it took me 2 hours to do, and that's with watching a youtube instruction video. Thankfully, I won't have to change that one again!
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Old October 25th, 2012, 17:47   #4
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So the path is:

A). Outside Air -> Filter -> Fan -> A/C Evap/Heater Core -> Vents?

or

B). Outside Air -> Fan -> Filter -> A/C Evap/Heater Core -> Vents?
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Old October 25th, 2012, 20:12   #5
Lightflyer1
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My experience has always been B in the past. Fans push air better than they pull it.
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Old October 25th, 2012, 23:19   #6
vw_norm
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Here is an exploded view of the HVAC box. 23 is the A/C Evaporator, 22 is the Aux heater (TDI only), 21 is the heater core, 19 is the dust/pollen filter, 18 is the cover for the filter, 17 is footwell access cover, 16 is the fan/blower, 11 is the condensation water drain hose with valve, 9 is the outside air intake. Air flow is right to left (Option B above).

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Old October 26th, 2012, 08:28   #7
unixb0y
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Quote:
Originally Posted by TurboDieselPoint View Post
So the path is:

A). Outside Air -> Filter
This is how it's done on the MKIV. The filter is accessed from the engine compartment and fresh air is taken from below the windshield.

There are hood gaskets that prevent engine bay air from being used.
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Old October 26th, 2012, 09:16   #8
compu_85
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Speaking of the Aux heater... did we confirm TDIs have them?

-J
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Old October 26th, 2012, 13:39   #9
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We must have something. The temps here have been around -5C every morning and the engine is cold.

I crank up the heat to about 25C and I'm getting warmth in about a minute. It's not a lot, but its better than ice cold air.

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Old October 31st, 2012, 11:54   #10
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Quote:
Originally Posted by vw_norm View Post
Here is an exploded view of the HVAC box. 23 is the A/C Evaporator, 22 is the Aux heater (TDI only)
According to the pic the Aux heater is #22
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