HKE CMA31-CM Relay

blbrchnk · 02-15-2017, 07:58 AM

I purchased a 335i with upgraded RB turbos, inlets and the whole shebang. Car has been running fine for months and still does, but lately I have noticed that this relay has been clicking super fast constantly under the hood. I think the previous owner did the coolant expansion tank relocation so I don't believe this is the original location of said relay.

Anyone know what it controls? Advanced Auto said it was for the O2 sensor. When I unplug it, I lose my HIDs, so I am all over the place with it. I bought a replacement, but it clicks as well so I am thinking the relay itself is fine. It does seem to be making more exhaust which would make sense with the "O2" theory, but then why would I lose my HIDs when it is pulled

Here is an image of it. If anyone has any ideas, I'd appreciate it.

https://goo.gl/photos/gu5ANpNP9GqhFEzD8

ctuna · 02-15-2017, 12:25 PM

Why would you think you would get and answer to this in
the stereo bluetooth section and not the general or motor
section( sub forum)

02-15-2017, 07:58 AM	#1
blbrchnk Second Lieutenant 12 Rep 224 Posts Drives: 2008 e90 335xi Join Date: Feb 2011 Location: Bridgeport, WV iTrader: (3)	HKE CMA31-CM Relay I purchased a 335i with upgraded RB turbos, inlets and the whole shebang. Car has been running fine for months and still does, but lately I have noticed that this relay has been clicking super fast constantly under the hood. I think the previous owner did the coolant expansion tank relocation so I don't believe this is the original location of said relay. Anyone know what it controls? Advanced Auto said it was for the O2 sensor. When I unplug it, I lose my HIDs, so I am all over the place with it. I bought a replacement, but it clicks as well so I am thinking the relay itself is fine. It does seem to be making more exhaust which would make sense with the "O2" theory, but then why would I lose my HIDs when it is pulled Here is an image of it. If anyone has any ideas, I'd appreciate it. https://goo.gl/photos/gu5ANpNP9GqhFEzD8 __________________ 2009 BSM E92 AT 335i - RB Turbos - MMP Inlets - AA Race FMIC - AP DPs - KW V1s - RB PCV - N20 MAP - Rotora Forged BBK - VRSF CP w/ Tial BOV - Fuel It Stage 2 LPFP - Alpina TCU Flash Last edited by blbrchnk; 02-15-2017 at 12:04 PM..
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02-15-2017, 12:25 PM	#2
ctuna Lieutenant General 1911 Rep 13,103 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Why would you think you would get and answer to this in the stereo bluetooth section and not the general or motor section( sub forum)
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