Oil Temp Wildly Fluctuating

[Yern]

Only happened twice in the last 6 months or so, oil temp is usually (when warmed up) in the 90's depending upon driving 'style'. Twice now its suddenly started fluctuating wildly from cold (after it starts registering the temp) anywhere in a range of 40 to 50 degrees rapidly scrolling up and down whilst driving normally e.g. between 95-145. Once cooled down its back to normal again and its only done it twice. I will get the dealer to look into it next year on its service but just wondered if anyone else had experienced this. Of course if I didn't have water and oil temp displayed in the LH dash area area I wouldn't have known this was happening!

 

[istoyanov]

I never faced such. Do you drive it aggressive to went so high ? But such differences I can't imagine to happen on a hot engine. ButI am not a technical person. Maybe a sensor issue ..

 

[KoNG]

Faulty oil sensor I think

 

[Yern]

I never faced such. Do you drive it aggressive to went so high ? But such differences I can't imagine to happen on a hot engine. ButI am not a technical person. Maybe a sensor issue ..

No I don't drive harsh but driven hard over hills the maximum may be 105-110. Certainly not 160+ when its misbehaving. I suspect an intermittent sensor issue and of course it won't happen at the dealers. Today...perfect, I will have to video it if/when it happens again.

 

[istoyanov]

For sure a video is a must! I had other issues and videos saved me.
I was wondering if OBDeleven has any history log for max temp of engine. But I don't think so.
Climbing is also loading the engine I would say more than 160 on a highway.
I would make a video and go to the dealer. For sure this must be checked. Even engine temp is not going so high it is still not ok your car to receive wrong information about that.
Crossing fingers !

 

[chembers]

No idea how to even find the oil or coolant temp in this stupid car

 

[Yern]

Digital dash - with the top left and right view buttons on RH of steering wheel navigate to the left hand side of the dash. Use the scroll wheel to change the view until oil and water temp shows then press scroll (as ok) to set the view.

 

[chembers]

Digital dash - with the top left and right view buttons on RH of steering wheel navigate to the left hand side of the dash. Use the scroll wheel to change the view until oil and water temp shows then press scroll (as ok) to set the view.

Yeah to be honest I found it once but it's just stupid being buried like this and having have multiple clicks, get rid of one widget to show another. It's insane.

It really should be part of the driving data main screen widget.

I cannot tell you how much I hate the whole system.

 

[KoNG]

Bottom part of the engine is where is the sensor located

 

[Yern]

Strange thing today, thought I'd change the left clock centre view from water/oil temp and on initial change (before pressing scroll wheel to ok) the whole left clock centre section started scrolling all the view options very fast...on its own! It then stopped. If I thought the dash display was faulty I would have thought water temp would be scrolling as well as oil yet this never has. Needless to say to it didn't do it again and the oil temp fluctuation has only happened twice in nearly 2 years.

On a different tack I also noticed some users report fog light error sometimes showing on dash. Did it once to me about 18 months ago then never again...so far.

Only in the damp winter weather emergency braking assistance is 'reduced' due (I assume) to damp on the sensor which then goes off after driving a mile or so.

A friend with a 2 year old C4 has intermittent times when the heater only blows cold air. Starts the car up again and the climate system works as it should.

We live with intermittent electrical gremlins which are never present when the dealer looks at it.

 

[skarj]

I know it's and old topic but nevertheless.
What happened to your oil temperature? Did you get it fixed?
I have the exact same problem today, no signs of jumping temperature before, now it is like it report momentary live data. Numbers between 50 to 80+ C.

 

[Yern]

I know it's and old topic but nevertheless.
What happened to your oil temperature? Did you get it fixed?
I have the exact same problem today, no signs of jumping temperature before, now it is like it report momentary live data. Numbers between 50 to 80+ C.

Yes, it was fixed with a new sensor under warranty on my previous MK4. Fortunately I had videoed the issue as proof to the dealer and Seat warranty. See also...https://www.seatcupra.net/forums/threads/car-battery-rating-on-2-0-tdi-kl.478623/post-5077455

 

[skarj]

Thanks for the answer.
Same problem here, the temperature is all over the place, just after a limp mode set to max 1500 rpm, do you happen to know which sensor (number) or the location of it? Is it the same sensor that give oil pressure? Or a separate sensor.
I am in Sweden here, not sure if we have the same warranty.

 

[Yern]

I don't know and wouldn't think its the oil pressure sensor. If your car is still covered under Seat new car warranty then this fault should be rectified free under that warranty.

 

[skarj]

Doesn't seem logic to me either, but I came over some combined pressure/temp oil sensors when I tried to google the problem I got.
No new car warranty, but there were some SEAT approved warranty, but since the SEAT dealer went bankrupt including the repair shop, it's a bit tricky.
So I thought I start with have a look myself, so it would be helpful to know what I am looking for But maybe someone else have a clue, thanks for your inputs.
I had many electronic "ghosts" in this car, much of it seem OK after restart the car, other stayed for longer, the date for example kept fall behind, that seem to be OK, the clocks were never wrong, just the date. Start/Stop were blocked twice. Back up camera went all black. Some more things that I can't seem to remember at the moment, but I am not impressed. Oh yeah, all buttons on the right side of the steering wheel stopped working, that time the dealer gave it an update, and it were OK after that, then the dealer got bankrupted. The local SEAT/Cupra dealer.

 

[Yern]

Does sound like you have some electrical gremlins in there. If the warranty you have is Seat approved then any Seat dealer should be able to handle it if there is another fairly close to you?

 

[skarj]

Indeed, it does not give a stabile feeling. No SEAT dealer around, but the other VAG brands, SEAT had a separate dealer and repair shop, I didn't yet ask if the Audi/VW/Skoda place handle SEAT approved warranty, it should anyhow look more or less the same under the hood, but maybe they must have SEAT to accept warranty jobs.

 

[skarj]

Problem fixed, oil temp/level sensor was changed without charge, the sensor are a combo sensor seated the bottom of the oil pan, from the under side next to the drain plug.
Fixed at the VW dealer after some emails from each side, since "my" SEAT dealer gone bankrupt.