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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 March 8th, 2019, 17:44   #1
mobrien23
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Default Engine Temp Gauge - increase past 190 F

2013 Passat TDI - NMS - 275,620 miles - engine temp gauge moves past 190 but never goes up to 260 - dealer can't find any issues with cooling system - no codes for temp change -
Also - 2-3 hour drive - Red adblue light turns on saying no restart - kept driving - light goes out and code resets after 2 days - dealer has not ideas beside explore wire harnesses at $110/hour -search - not sure what to do - any ideas?
-Spent $320 on 2 shops to diagnosis problem - none found
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Old March 11th, 2019, 05:35   #2
compu_85
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How hot is it getting? The 12-14 Passat TDIs have a 220*F thermostat. Under high load conditions it's "normal" to see the temp gauge start to move. I think the highest temp we saw on ours was 226*F.

-J
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Maybe I should pay MYSELF to do bad work on my car!
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Old March 11th, 2019, 05:37   #3
oilhammer
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You are not alone with the DEF light deal, there seems to be a glitch in the new software and I am not sure yet they've figured it out. Many have given up and deleted the problematic system, which sucks, but...
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Old March 12th, 2019, 19:55   #4
mobrien23
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Temp gauge moves 4 hash marks past 190 on uphill climb - levels back to 190 on downhill and idle - 2 hash marks on highway drive after 30 minutes - temp has not moved past 190 in car history until 2017 - been doing it for 2 years - no shop has an answer or will to offer fix -
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Old March 13th, 2019, 03:21   #5
oilhammer
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Yep, you'll soon find out why deletes are becoming so popular.
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Old March 13th, 2019, 04:55   #6
740GLE
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I'm guessing clogged coolant system components, not sure if even a DPF delete would solve that, as it'd just remove some of the heat the system needs to dissipate.

While heater cores are common replacement items, not sure if anyone had to change out radiators but I wouldn't be surprised if its clogged to some degree as well.
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Old March 13th, 2019, 05:57   #7
compu_85
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Quote:
Originally Posted by oilhammer View Post
Yep, you'll soon find out why deletes are becoming so popular.
A delete might lower the temp load some, but it won't change the 210*F thermostat, or the defective heater cores that gunk up the system. It might help with coolant breakdown in the EGR cooler, though.

-J
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1991 Mercedes 350SDL 230,000 miles, 70,000 on engine. 18/27 MPG.
Past:
2012 Passat SE TDI DSG. 114,000 miles. LED tails, Memory Seat, HIDs. Bought back by VW.
2004 Touareg V10 TDI. 165,000 miles. Sold to Matt98AHU w/ flat camshafts.
1988 Audi 5000S Quattro, 1992 Jetta ECOdiesel, 1991 Jetta ECOdiesel.
Thank you for giving me the BUG*PWR award. It means a lot to me!

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Quote:
Originally Posted by BRUSSELS BELGIAN View Post
Maybe I should pay MYSELF to do bad work on my car!
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Old March 13th, 2019, 17:47   #8
mobrien23
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DEF Light red - out of ad blue - no engine restart - Codes P204F & P20EE - Dealer advised catalytic converter (rear) is cause of Red Def light error - $865 to replace & solve problem
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Old March 14th, 2019, 11:34   #9
fredthe
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Quote:
Originally Posted by mobrien23 View Post
DEF Light red - out of ad blue - no engine restart - Codes P204F & P20EE - Dealer advised catalytic converter (rear) is cause of Red Def light error - $865 to replace & solve problem
Um, have you had the mod? The catalytic converter is a named covered component.

Also did the light come on at high speed in cold weather? Same happened to me but I haven't taken it in yet.

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Old March 14th, 2019, 17:17   #10
mobrien23
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I had the mod- they did not replace the catalytic converter - mileage at 276K now - light came on at highway speed in cold weather - dealer said computer scan showed a 45mph average speed - I am asking VW to cover the cost of the catalytic converter - no luck so far
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Old March 15th, 2019, 04:23   #11
740GLE
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so you had the emissions modification per the EPA agreement, are you still within the mileage of the extended warranty?

If so keep pointing to that warranty and tell them to pound sand.
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Old March 15th, 2019, 10:35   #12
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The extended warranty post mod is 48K, and covers the cat. But I expect you may be past that.
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Old Yesterday, 16:45   #13
06bluebeetletdi
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Quote:
Originally Posted by fredthe View Post
The extended warranty post mod is 48K, and covers the cat. But I expect you may be past that.
It is 51k for the 12-14 passats.
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Old Today, 06:39   #14
mobrien23
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Had the mod done at 206K and now at 277K - VW said out of warranty and no good "will" will be offered
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