rear view mirror upgrade

immortality · 06-21-2017, 02:22 PM

My rear view mirror is not a auto dim one with no option. it's no good when a truck come behind me.... so, i need to upgrade this mirror

can i just buy auto dim mirror then install it? does it function without issue?
2012 z4 35is

NoQuarter · 06-22-2017, 03:46 PM

The mirror connects to the alarm, CAS, and Comfort Access

I have not seen a BMW car yet that had wires/plugs laying around for an unused feature.

Your best bet is to first look for wires/plugs used in your current mirror.

Tangent · 06-23-2017, 02:52 PM

Quote:

Originally Posted by NoQuarter

I have not seen a BMW car yet that had wires/plugs laying around for an unused feature.

That at least used to be totally common in the US models anyway. BMW would equip all cars headed here with the one version wiring harness that accommodated any and all options instead of installing a specific one for only what the car was ordered with. I have no idea if they still do that though...

SpikeMilligan · 06-24-2017, 08:11 AM

If you twist the "clown nose" (the red bulb on the bottom of the mirror that flashes to show that the alarm is on), you can manually dim the mirror.

bigendbob · 06-24-2017, 03:11 PM

Does anyone else like me, mainly see only sky in the rear view mirror with the roof down. I can barely see what's behind me.
Never a problem with other open top cars I have had.

06-21-2017, 02:22 PM	#1
immortality Private 8 Rep 57 Posts Drives: 2012 Z4 35is Join Date: Aug 2015 Location: Auburn iTrader: (0) Garage List 2012 BMW Z4 35is [0.00]	rear view mirror upgrade My rear view mirror is not a auto dim one with no option. it's no good when a truck come behind me.... so, i need to upgrade this mirror can i just buy auto dim mirror then install it? does it function without issue? 2012 z4 35is
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06-22-2017, 03:46 PM	#2
NoQuarter Captain 164 Rep 906 Posts Drives: 2008 535xi / 2011 Z4 35Is Join Date: Jan 2011 Location: Indiana iTrader: (0) Garage List 2018 BMW X2 [0.00] 2008 535xi [0.00] 2011 Z4 35is [0.00]	The mirror connects to the alarm, CAS, and Comfort Access I have not seen a BMW car yet that had wires/plugs laying around for an unused feature. Your best bet is to first look for wires/plugs used in your current mirror.
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06-24-2017, 08:11 AM	#4
SpikeMilligan 35is driver 16 Rep 60 Posts Drives: 2012 S-drive 35is Join Date: May 2014 Location: U.S. East Coast iTrader: (0)	Manual dimming of rear-view If you twist the "clown nose" (the red bulb on the bottom of the mirror that flashes to show that the alarm is on), you can manually dim the mirror.
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06-24-2017, 03:11 PM	#5
bigendbob Second Lieutenant 50 Rep 297 Posts Drives: z4 23i Orion Silver Join Date: Jun 2012 Location: west midlands iTrader: (0)	Does anyone else like me, mainly see only sky in the rear view mirror with the roof down. I can barely see what's behind me. Never a problem with other open top cars I have had.
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