Would someone tell me how to fix this issue of my Mercedes 1992, 190D fan runs till battery becomes empty even though there was no overheating issue. Appreciate any input.
Thanks

 

My bandage solution was to disconnect both electrical fans. Without these fans working, engine temperature is normal which was between 85 and 90 degrees. I also have another two issues that were unsolved, they are my RMP was not working and ABS light comes on all the time when engine gets started. I have had these issues after I left my 190D, 1992 Mercedes for one winter outside of my garage. Two days ago, I came back to this forum trying to find a solution to all my issues. Some smart guy mentioned about ABS light comes on was the issue with OVP relay which was located behind the battery. The OVP has one fuse which was broken, I replaced it and was not working, next day I replaced it with an used one and it works! Wow! This replacement fixed all my three issues!!! i.e
ABS light is gone, RMP working and fans don't run unnessarily. Thank you for all the info posted in this forum.I sincerely hope that the info here would one day helps someone to fix his or her similar issues that I've encountered.

 

Hello Froceinduction, please tell me precisely which relay you referred to as failed relay for fans issue. Your input is appreciated.