Stray Sensor

miked3103 · 04-06-2023, 05:41 PM

Hey guy,

I am in the process of finishing up a head gasket replacement on an 2003 Z4 3.0i, and have one stray sensor that I can not locate the female component for. I have been looking for quite some time and haven't found anything in the area on the vehicle or online.

The sensor is tied into the forward most portion of the wiring harness on the passenger side and branches off the larger male sensor which attaches to the fan shroud/radiator assembly. The sensor has 2 brown, 1 yellow and 1 blue wire feeding into it. I have removed the fan shroud/radiator assembly, wheel well and do not see anything that would match.

Apologies if this is the incorrect sub, or if this is covered in another post

pokeybritches · 04-06-2023, 08:10 PM

Fog light?

miked3103 · 04-07-2023, 04:14 PM

Thanks for the feedback, it looks very similar to the fog light sensor, but that one is matched up, with this one still free.

Vanne · 04-26-2023, 09:00 PM

nah, its the thermo fan plug. does yours work? always on/off? id probably be inclined to think its never on if that plug isnt not connected.

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Funnily enough I was working on that stuff myself yesterday.

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Cheers

04-06-2023, 05:41 PM	#1
miked3103 Mike D 0 Rep 2 Posts Drives: 2003 z4 3.0i Join Date: Apr 2023 Location: Virginia iTrader: (0)	Stray Sensor Hey guy, I am in the process of finishing up a head gasket replacement on an 2003 Z4 3.0i, and have one stray sensor that I can not locate the female component for. I have been looking for quite some time and haven't found anything in the area on the vehicle or online. The sensor is tied into the forward most portion of the wiring harness on the passenger side and branches off the larger male sensor which attaches to the fan shroud/radiator assembly. The sensor has 2 brown, 1 yellow and 1 blue wire feeding into it. I have removed the fan shroud/radiator assembly, wheel well and do not see anything that would match. Apologies if this is the incorrect sub, or if this is covered in another post Attached Images
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04-06-2023, 08:10 PM	#2
pokeybritches Colonel 479 Rep 2,782 Posts Drives: ESS/G-Power Z4M, VF Z4, 996tt Join Date: Sep 2009 Location: Los Angeles iTrader: (12) Garage List 2006 BMW Z4M [10.00] 2006 BMW Z4M [8.50] 2003 BMW Z4 3.0i [9.00]	Fog light? __________________ VF Engineering Z4 3.0i, ESS Z4M, G-Power Z4M, 996 Turbo
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04-07-2023, 04:14 PM	#3
miked3103 Mike D 0 Rep 2 Posts Drives: 2003 z4 3.0i Join Date: Apr 2023 Location: Virginia iTrader: (0)	Thanks for the feedback, it looks very similar to the fog light sensor, but that one is matched up, with this one still free.
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04-26-2023, 09:00 PM	#4
Vanne Down Under!! 1621 Rep 4,294 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	nah, its the thermo fan plug. does yours work? always on/off? id probably be inclined to think its never on if that plug isnt not connected. Funnily enough I was working on that stuff myself yesterday. Cheers __________________ 2007 EuroSpec Z4///MC - Building/Developing Z4 GT3 Powered by Last edited by Vanne; 04-26-2023 at 09:09 PM..
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