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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 06-05-2015, 12:59 AM
RobinW RobinW is offline
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Location: Brisbane Australia
 
Join Date: Apr 2015
Posts: 27
Mein Auto: 2001 530i m-sport
C110 Scan Tool Problem.

I have a C110 Scan tool I got off ebay and had hopes it would give me Transmission Fluid temps as I do a filter change. It appears to be wildly inaccurate. I get temps of 47C on a cold car and up around 140C on a hot car. Luckily I also have an iRed temp guage for the fluid change.

I'm wondering if my fluid temp sensor is faulty or if my C110 is faulty or if they all do that.

Anyone else got one? Does it read transmission fluid temps on your car ok?

Last edited by RobinW; 06-05-2015 at 02:38 AM.
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  #2  
Old 06-08-2015, 01:48 AM
Alika808 Alika808 is offline
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Location: Hawaii
 
Join Date: Feb 2013
Posts: 415
Mein Auto: 01 325 / 02 X5 / 03 525
I have the same scanner tool. So far, when I scan my cars, it doesn't go high as 140c. If you know anybody with other BMW, try to scan their car and compare the tranny temp. If the other car have lower tranny temp, (lower than 140c) then the scanner is good.
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Old 06-09-2015, 12:38 AM
RobinW RobinW is offline
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Location: Brisbane Australia
 
Join Date: Apr 2015
Posts: 27
Mein Auto: 2001 530i m-sport
After the first fluid change in 100K miles the temps read by the C110 are more realistic. They still seem to be about 10C higher than my IR thermometer. But surely all it's doing is reading the data on the stream so it's far more likely the temp sensor is the culprit. I'm in the BMW bike club down here, maybe one of those guys have a BMW with 4 wheels
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