BMW E36 Blog

BMW E36 OBC Showing -35F or -37C Temperature

14th May 2008

BMW E36 OBC Showing -35F or -37C Temperature

posted in Interior, Technical Info, Tips & Tricks, Uncategorized |

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I published the post Faulty temperature sensor in BMW E36 long time ago. The post talked about the reason why your OBC shows a wrong external temperature like -35F or -37C. At the time of writing that post, I was going to replace the sensor and to my surprise I found that it’s missing. Luckily the wires where hanging there. It seems that someone thought it’s not necessary and this car will not need it. Anyway, somehow I forgot the whole thing and it took me until today to actually get a new one (used) :p , take a look below:

Poor sensor 😀 . The wiring was very easy, just connect the sensor wires to the wires inside your brake duct and you’re set.

After I connected the temperature sensor, I thought the car will show the temperature right away, but it took some time until it started showing the correct temperature. First it started like this -37C , then  gradually increasing until it reached 0C then it started going up until it reached 30C.

It’s very nice to fix this problem and very easy at the same time, so if you have this problem in your car, I don’t think you should wait like I did. Just get the temp sensor and fix it.


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There are currently 3 responses to “BMW E36 OBC Showing -35F or -37C Temperature”

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  1. 1 On July 9th, 2008, ogie said:


    I have a BMW 325 Ci–2004. My temperature just OBC, outside temperature just went crazy and I think I might need to replace a part. Do you know what part (i think it’s the part you replaced with yours; Do you know the part number and give me a good discount site where I can purchase a new one. thanks for your post–It’s been helpful.

  2. 2 On July 9th, 2008, Tony Sticks said:

    @ogie: Check .It should provide you with the information you need.

  3. 3 On November 22nd, 2011, AleksanderI said:

    Where is the sensor mounted?