From digest.v7.n307 Sat Sep 20 09:41:04 1997
From: DavidMcL_at_aol.com
Date: Sat, 20 Sep 1997 02:02:49 -0400 (EDT)
Subject: OBC temp _at_ -22F

     >I have a 1987 535is and I was wondering if anyone knows what I can do 
     >about the OBC giving me a wrong temperture readout.  I constantly get 
     >a -22F reading.  What steps should I take to remedy this problem?
       
     >Thanks in advance.
        
     >Alejo...

The temp sensor is shot or missing competely. When I had my BMP body kit put on my '87 535is, the body shop forgot to put the temp sensor back on. While it was off, mine displayed -22F also.

Dave McLaren