1991 325ix Defroster Not Working

[CR 325ix]

My defroster does not work. The switch lights up but does not defrost???
Any help would be a great help!!!

[DRTSRFR]

...need a little more info...

The fan blows but not hot?

The fan doesn't blow?

The slide control makes no difference?

Rear defroster??

[dogsbark26]

Simple electrical circuit. Trace power and ground. Does the wiring on the window itself show continuity? Most likely is one of those little wire decals on the window itself is broken. Many auto stores sell a product to repair. Example: http://www.frostfighter.com/prt2100.htm

[CR 325ix]

Rear Defroster Not Working

Sorry I should have mentioned that it’s the rear defroster. I will check the continuity. There is no visible broken lines that I can see? I will check it with a tester to be sure. A friend mentioned that it may be a relay that is located in the trunk?

[dogsbark26]

Verts have a rear defroster fan.

Do you have an ETM (Electrical Troubleshooting Manual) for you car? It will show circuits and wire colors, etc.
Available here: http://wedophones.com/BMWManualsLead.htm

[DaveSmed]

The wire from the car to the back glass likes to break off...