Calibrate temp on 97 e36 obc???

[Tomwas]

Is there a method to calibrate the temp on the 18 button obc. I bought a 97 m3 and I'm reading Fahrenheit but display says way minus than the actual ambient temp. Like if it's actually 38 degrees outside obc will display -3 degrees. Any help appreciated. Thanks, Tom

[Dmitry at Pelican Parts]

Hello and welcome to the forum! Take a look at the link below to an earlier thread where this is discussed - I know that it's for the E34, but perhaps it'll help you. Hope this helps and best of luck!

OBC Calibration

[Tomwas]

Thanks, Will check it.