Where is power feed for rear window heater?
Where does the power feed into the rear window heater grid?
Someone told me it was behind the passenger C-pillar from that little black box. But I looked up that part and it's a trap circuit for the FM antenna.
I am trying to troubleshoot a non-functioning rear window heater.
Also, I can't seem to find the rear window heater or anything to do with it on realoem.com, what is it listed under?
This black box? Are you getting 12v to the grid? It's controlled by the HVAC unit
Maybe it's from the other side:
Yes, the black box in the first picture is the one I am referring to.
realeom.com and the local BMW dealer identifies this as part number 65 24 8 380 944 Trap Circuit for FM Antenna. Is this incorrect? To me that looks like the connection for the grid but why is it identified as a trap circuit for the fm antenna.
Your second picture from the divers side, the realoem.com guide identifies that box as the amplifier, i am assuming the amplifier for the antenna??
I checked those two leads going from the box (in the first pic - passenger side) to the grid and I do not get 12 volts there, or any voltage for that matter.
The relay for the rear window heater located in the trunk 'clicks' when the heater button is pushed, the rear window heater light comes on, and the fuse is good, but no heat to the grid.
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