external temp wrong
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#9
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I'm not saying that you're mistaking. I'm sure you're telling us the truth.
I'm just not all that keen on what jaguar considers "normal".
If they find it normal that a temp sensor is off by 10 degrees, why bother having one at all?
They could've just used a dial that said "hot, normal, cold" instead![Icon Wink](https://www.jaguarforums.com/forum/images/smilies/icon_wink.gif)
Anyway, if you're sure about it not being the temp sensor, than what could it be caused by? It's quite annoying that the weather's quite nice over here, but my ext temp reads 3 degrees, and the snowflake lights up.
Even though jaguar might consider this normal, I don't. I find this evenly normal as never changing transmission-, transfercase- and differential-oil.
I'm just not all that keen on what jaguar considers "normal".
If they find it normal that a temp sensor is off by 10 degrees, why bother having one at all?
They could've just used a dial that said "hot, normal, cold" instead
![Icon Wink](https://www.jaguarforums.com/forum/images/smilies/icon_wink.gif)
Anyway, if you're sure about it not being the temp sensor, than what could it be caused by? It's quite annoying that the weather's quite nice over here, but my ext temp reads 3 degrees, and the snowflake lights up.
Even though jaguar might consider this normal, I don't. I find this evenly normal as never changing transmission-, transfercase- and differential-oil.
#10
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there is a bulletin for THAT issue, tsb S412-04, but believe me I have had a Jagaur engineer explain how and why the ext temp reading is calculated and the effects on it....yeah okay and why didnt you just take a NORMAL reading and leave it alone...But I understand their thinking cause you do have to deal with radiant heat and cold from road surface, radiator/condensor etc...
https://connect.jlrext.com/extdealer...iDocCode=22952
https://connect.jlrext.com/extdealer...iDocCode=22952
#11
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True, if they took a normal reading, it would be way too high, because of the residue heat of the radiator...
would love to see the link you sent, but it needs a login and pwd. I'm guessing my GTR pwd won't work... (edit: nope, it doesn't)
So this got me thinking.
The calculated temp would always have to be lower than the temp it reads (due to the rad heat). So the further you move the sensor away from the rad, the lower it would read, and the lower calc'ed temp would be. Maybe my sensor has just worked loose?
I'm off to check this §H!T out
would love to see the link you sent, but it needs a login and pwd. I'm guessing my GTR pwd won't work... (edit: nope, it doesn't)
So this got me thinking.
The calculated temp would always have to be lower than the temp it reads (due to the rad heat). So the further you move the sensor away from the rad, the lower it would read, and the lower calc'ed temp would be. Maybe my sensor has just worked loose?
I'm off to check this §H!T out
![Icon Teeth](https://www.jaguarforums.com/forum/images/smilies/icon_teeth.gif)
#12
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Well the short of it is that it applied specificly to stype r's, but is relative to other models. And it involves moving ambient temp sensor away further out from radiator.
Claimed error in reading is up to 10 degree error
i can still tell you that the ambient is not always a accurate reading. I have shot and probed the temp compared to display reading and is always off. Thats why i said its not broken, you will drive yourself nutz expecting it to be accurate all the time
Claimed error in reading is up to 10 degree error
i can still tell you that the ambient is not always a accurate reading. I have shot and probed the temp compared to display reading and is always off. Thats why i said its not broken, you will drive yourself nutz expecting it to be accurate all the time
#13
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there is a bulletin for THAT issue, tsb S412-04,
https://connect.jlrext.com/extdealer...iDocCode=22952
https://connect.jlrext.com/extdealer...iDocCode=22952
What are these so I can read this?
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