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post #1 of 8 Old 01-31-2019 Thread Starter
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Engine Fan Question

Hey there, new Touareg owner. Had a question regarding the engine fan. I’ve owned my 2016 TDI Lux for about 2 months, tonight for the first time the engine fans stayed on for about 4 minutes after I had turned off the vehicle. Is that normal?

I had just driven home, about a 30 minute drive, half city half highway. The last 2 miles were semi spirited.

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post #2 of 8 Old 02-01-2019
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That's normal - if the end of your drive was "semi-sprited" the turbo will be hot and the engine compartment need ventilation.

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post #3 of 8 Old 02-01-2019
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Although the touareg has built-in measures to address such bad practices, you should never drive a trubocharged vehicle hard before shutdown..... depending on how old you are and if you've had any prior exposure to modified vehicles, you may remember the very popular "turbo timers" form the late 90s - early 2000s that everyone with turbocharged vehicles was adding on to their cars in order to be able to keep the engine and all it's fluids circulating for a few minutes after driving in order to allow some time for all the expensive components to "cool down".

It is also very possible that your TDI was in the process of doing a regen, in which case, it may continue to finish some or all of it even after you park and shut the engine off.....
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post #4 of 8 Old 02-01-2019
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Likely the Regen cycle was running. But agree with above, never shutdown a HOT turbo engine. Either drive slow for last few miles/kms of commute or let it idle for 30 seconds - 1 min before shutting down.

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Thank you for the responses. Can you tell me more of the “regen cycle”? Like what is that?

Thanks again.


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https://en.wikipedia.org/wiki/Diesel...r#Regeneration

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Quote:
Originally Posted by Geekwgn View Post
Can you tell me more of the “regen cycle”? Like what is that?
Some info for you
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File Type: pdf DPF_extract.pdf (80.3 KB, 10 views)
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post #8 of 8 Old 02-01-2019
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With regards to the fan on, I have noticed that a few times too. However there were not any specific driving situations to correlate it to.
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