Hello everyone,

 

My 2012 O2 FL has a maxidot display and I successfully activated the oil temperature display function in the mfd menu.

 

My problem is, that under 50 °C it shows "---" instead of the real value. I've checked it in VCDS and found the oil temp. value, so I was able to read it out also under 50 °C.

But I would like to see the temp on the mfd too.

 

Is there a way to make that happen?

 

The reason why I want to see the actual temp, is, that I've installed a Calix RE670 oil pan heater and I would like to know every time, when I start the car in a cold morning, how far could the pre-heater heat up the engine (oil).

As far as I know, it's normal to only display oil temp above 50'C. Can't say I've ever seen anyone lower the limit either.

 

If you do find a solution, please add it!

It's normal.

that's fine, it only comes on at +50c and should go up to and over 100c ( although I've only had that once)

 

the only way to do what you want it read the real value in vcds as you've done.

Edited 6 October, 20178 yr by Gissin

From the owners manual:

 

oil temperature*
If the oil temperature is lower than 50°C or if a fault in the system for checking the oil
temperature is present, three lines are displayed instead of the oil temperature

 

 

The thing is the OP wants to be able to monitor the Oil in the sump temperature for the Oil heater, 

so if no way to activate from what is Standard then a mod might be the only solution and a temp sender fitted and wiring to a gauge in the cabin.

 

Or just trust to the fact the heater works OK, and be sure to use suitable oil for Hungary in winter, 

first time you use it is anger you know the Ambient Temp and how long it takes to get to 50*oC indicated compared to normal around 0*oC ambient temp start ups 

or lower without the use of the 'Pre Heater'.  eg,   16km / 10 miles...

 

Simple solution for about 2,500 Forint (HUF) is a Fridge Thermometer, if you want to check Oil Temp before driving off, 

remove dipstick and push the sensor / wire down into the oil.

Edited 6 October, 20178 yr by Headinawayoffski

I like your problem solving. I would be a little worried about the probe gettibg stuck and breaking off though.

 

An app like torque through the OBD2 port may show the actual live temp if it is just suppressed in the cluster.( Not sure how accurate it would be at low temps, maybe that is why it is not shown. )

 

So you could set up a guage in the app and use on your phone or tablet for a while or a few trips if that is all that is required..

 

Ill try to check if it works over weekend.

Edited 7 October, 20178 yr by TheClient

The ones i have are like this. Had 3 for about 10 years and still never broken.

£3 from Amazon.

Used behind a battery or at air intake to check temps, used down dip stick tubes and sometimes just in vehicles that do not have thermometers just to check what the temp really is.

Even used on pushbikes or motorbikes to get ambient temps.

OK. Had a look at displaying in Torque in my TSi.

 

Slightly intriguingly, the standard PID for Engine Oil Temp produces no data. Coolant Temp yes, Transmission Temp 1 Yes,. Nothing for Engine Oil Temp. If you've seen it in VCDS can you get the PID ID?   Is there actually a temp sensor sender in all VAG engines or is it possibly an equation estimated value?...

 

 

Not all engines; any that have oil level sensor also have oil temp though, so anything that might be on variable service intervals.  Info from this combined  (G266) sensor usually goes direct to the instruments module I think.

Some older engines may have separate oil temp sensors, I think.

Edited 7 October, 20178 yr by Wino

Righty ok. Mine has the oil level sensor for variable servicing.  Mine also has maxidot and the temp shows when>50c. Seems a bit unusual it is not present in the standard engine oil temp pid in the app. So the ecu never monitors an oil temp feed? But the OP says it is obtainable in VCDS via OBD2.

 

To the OP: if you have vcds and you can identify the pid for engine oil temp and you want me to investigate further,  let me know and i'll see if i can manually add it. 

 

The main advantage I thought of in my opiniin is that it is a lot more practical having torque or something similar  on a phone or tablet with a wireless obd dongle if you want to interrogate regularly,  compared to getting a notebook computer out and running vcds cable just for checking  a single parameter.... But cant go further without knowing the custom pid, if it has one.

Not sure what a pid is, but if I look (with VCDS) at module 17, Instruments, on my Polo, oil temp is the third field in measuring block 3

1 hour ago, Wino said:

Not sure what a pid is, but if I look (with VCDS) at module 17, Instruments, on my Polo, oil temp is the third field in measuring block 3

 

A PID is a standardised code used to read certain information from an engine computer. Usually used when talking about generic OBD2 scan tools. There are hundreds of them and depending on the mode of OBD2 you are working in, the readings can vary. But generally a cheap OBD2 tool will read at least mode 1 PIDs, meaning stuff like MAF rate, fuel trims, O2 voltage and so on.

 

In VCDS, measuring blocks are a good example of PIDs. A specific bit of data that reads a specific thing at a specific location.

On 10/8/2017 at 08:49, TheClient said:

To the OP: if you have vcds and you can identify the pid for engine oil temp and you want me to investigate further,  let me know and i'll see if i can manually add it.

The main advantage I thought of in my opiniin is that it is a lot more practical having torque or something similar  on a phone or tablet with a wireless obd dongle if you want to interrogate regularly,  compared to getting a notebook computer out and running vcds cable just for checking  a single parameter.... But cant go further without knowing the custom pid, if it has one.

 

That is the plan :-).

I ordered two weeks ago a cheap bluetooth obd scanner from ebay, but it's still on the way. Meanwhile I've downloaded Torque and set a custom PID for the oil temp:

PID: 015C

Min value: -40

Max value: 210

Scale factor: 1x

Unit: C

Equation: A-40

source: https://en.wikipedia.org/wiki/OBD-II_PIDs#Mode_01

 

So as soon as the bluetooth thing arrives, I'll borrow the VCDS interface once again (because I don't have any on my own) to check exactly where have I found the oil temp value, which shows the temp below 50 °C.

And certainly I will compare it to the PID described above.

 

@Headinawayoffski: I wouldn't prefer any auxiliary temperature sensor, but thanks for the advice. Maybe if nothing else works, than I will change my mind.

 

BTW: I've done a quick and little check after installing the oil-pan heater. I've used a Holdpeak hp-885c thermometer with a K-type thermocouple sensor. I've fastened the sensor above the oil level sensor with some aluminium tape. I've noted the temp every 5 min. The result is ~0,3°C/min heating speed. But this is quite inaccurate due to external temp measurement, that's why I would like to perform further tests.

Real life experience: in 10-15 °C ambient temperature, with 1,5-2 hours long heating, the oil temp is 50°C after 1-1,2 km ride in the city.

 

Edited 9 October, 20178 yr by mucden

You might be able to fit a Polar FIS, I think these can display oil temperature and more in the maxidot.

The bluetooth obd scanner is still on the way, but I've managed to borrow a VCDS interface. Here are the temps logged today's evening (the engine was used afternoon, so it had not enough time to cool down to ambient temp):

I think the engine oil temperature-TOIL is the real value, because I started the engine and it also started to rise. The Calculated oil temperature-TOIL_MDL hasn't changed at all.

 

I've also checked the OBD functions on VCDS, but oil temp was missing from the drop down box. Is there any way to add maually a PID in VCDS?

26 minutes ago, mucden said:

I've also checked the OBD functions on VCDS, but oil temp was missing from the drop down box. Is there any way to add maually a PID in VCDS?

Do you mean adding an OBD2 PID so you can read it when you get your scanner? No, there isn't a way to do that as far as I know.

 

TOIL_MDL will be a calculated expected value for oil temperature, probably used during the warm up phase of the engine.

Edited 11 October, 20178 yr by LightRain

2 minutes ago, LightRain said:

Do you mean adding an OBD2 PID so you can read it when you get your scanner? No, there isn't a way to do that as far as I know.

 

No, I meant adding the OBD2 PID into VCDS. So I wanted to use the VCDS interface as a "dumb" OBD2 scanner, to check, wheter the 5C PID is the real oil temp or the calculated.

1 minute ago, mucden said:

 

No, I meant adding the OBD2 PID into VCDS. So I wanted to use the VCDS interface as a "dumb" OBD2 scanner, to check, wheter the 5C PID is the real oil temp or the calculated.

Well you can use VCDS in OBD2 mode.

1 minute ago, LightRain said:

Well you can use VCDS in OBD2 mode.

 

Yes, I found it out. But in OBD2 mode I found only a drop down list for PIDs and the 5C oil temp was not in the list. This is why I asked, wheter is it possible to add a costum PID in OBD2 mode or not. Sorry, if I wasn't clear.

2 minutes ago, mucden said:

 

Yes, I found it out. But in OBD2 mode I found only a drop down list for PIDs and the 5C oil temp was not in the list. This is why I asked, wheter is it possible to add a costum PID in OBD2 mode or not. Sorry, if I wasn't clear.

I don't think it is possible.  

I have a feeling the 5C code for the [Edit: ENGINE] oil temp is what is in Torque population set data reads by default, and as reported back, it produces no data. It seems there is something different about the locations of measured oil temps in the VW implementation. 

Edited 12 October, 20178 yr by TheClient

I know this is an old thread, i just want to give my 2 cents, to this with oiltemperature.

 

When i bought my Octavia 2005 2.0 tdi pd, I played around with vcds, and was 100% sure that i saw oil-temperature somewhere, but could not remember  where and in which measuring block it was.

 

After a period of time, i should use the oil temperature, and read through every possible measuring block from the engine, but could not find it. I googled it, and found out that is was in engine group 29 that the oil temerature should be found. Measuring block 29 also contains oil level data - but my measuring group 29 was empty!

 

I really searched my my brain howcome that could be, because it must have been there at some point, since I earlier had been able to read data, including oil temperature!

 

Then it suddenly hit me. Because what is data in measuring block 29 used for ? They are originating from the level and temperature sensor placed in the oilpan in the bottom of the engine, and the data from the sensor, in combination with other data, is used to calcuulate and monitor the oil during driving, and to determine when its time to change the oil, when the engine has been set up to varable service intervals.

 

Im not a great fan of varable service intervals ,, I better like to shift the oil every 15.000 km, and therefore I immeadiately changed from variable intervals to fixed intervals when i got my new used car, and at that point there was not long to figure out that i maybe have been disabling the sensor in the oilpan by doing this ??

 

Sure enough, when i reinstated the variable service intervals, measuring blocks in group 29, again was full of data. Now i could read oil temperature, oil level, and oil level in millimeters above defined minimum oilstand. Maybe others can use this - if you disable variable service intervals, you also hinder readings from the sensor in the oilpan. At least on the BKD engine. So now i have variable service intervals setup, even though i change the oil every 15K. And all my oil data from the sensor is avail. for me to use