2014 vw passat b7 2l tdi 177k miles

Deanm1521

New member
Joined
Jun 14, 2020
Location
Ireland
TDI
2014 2l vw passat, 2007 1.9tdi vw golf
Hi everyone, I am currently having some problems with my 2014 tdi. Its coming up to nearly 3 years since i have owned this car. Its my work horse and i love it.

Recently i noticed my car was overheating.

for over 2 and a half years of me driving this car in all types of weather, my oil temp would never budge above 90° c. Maybe on a hot day we could reach 93° c. But never seen it rise above that.

Up until lately temperature has been soaring through these levels, and now reaching at one stage 119° c, before i slowed down to let it cool. Today i hit 106° c.

I brought the car to a garage and they insured me that it was the waterpump as it was old and starting to leak, so i got that replaced and the issue was still the same. I then went back after spending €800 to fix the problem and i was told it was a stuck thermostat and i might aswell change the sensor while doing it, so i did that last week.

Today the car is overheating quicker since i got the thermostat done. I brought the car back to the same garage and he insured me that the problem is common for oil temperatures to soar like that. Which is fine as i have read about thaton multiple forums. But what caught me off guard is for over 2 years of driving this car oil temp wouldn't budge above 90° c, even with heating off.

Has anybody experienced this issue at all? Its really annoying as i do 3 hour trips once a week for work. Im not entirely satisfied with driving while the temperature is rising as dont want to do further damage.

Also i am not losing any fluid (antifreeze), heating seems to be ok and AC. Water pump done less than a month ago with timing belt. Thermostat and fluid flush and temperature sensor all done last week.

Not sure what else it could be to be honest as any garage i go to will say this is common for the oil to reach that temperature, but why did it not go above 90 for 2 and a half years then?

Thanks in advance.
 

06bluebeetletdi

Veteran Member
Joined
Sep 30, 2012
Location
Middlesex, NC
TDI
'14 Passat TDI SEL and '13 Beetle TDI
Has anything changed in the last 6 months? Did ireland have a software update for emissions like the us and canada? I noticed my passat after the modification runs the fans every time i turn the car off when it’s over 75* F. No oil temperature gauge on the us version of the passat. Are both cooling fans running?
 

Deanm1521

New member
Joined
Jun 14, 2020
Location
Ireland
TDI
2014 2l vw passat, 2007 1.9tdi vw golf
I have noticed that my fans use to run after me leaving the car. (After a long drive) now they only seem to operate when i have the heating/AC on.as for a software update i am unsure about this and was not told when i went to vw main dealership. There is a coolant guage under the rev clock, but on my car (14 passat 2ltdi) we have a digital guage on the cluster screen. I have never seen the car rise above 90°c except for the hottest of days, and even then 93° c would be the limit. I checked the fuses myself and one was blown, but was for a trailer so changed that and nothing happened. Ran a live reading test when driving on my obd scanner and coolant temp disnt budge above 91,, but oil temp is the issue here. When i explained to the mechanic about the overheating issue, he assured me it was the coolant system, now im not sure as i do not know why the oil wouldnt be cooling while driving. Is the radiator fan suppose to kick on around 90°c? To cool the engine?

Thanks for the quick reply @06bluebeetletdi
 
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