how do you use heated mirrors?
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Originally Posted by andy545' post='403524' date='Mar 16 2007, 04:53 PM
Automatic...they go on I think at or below 6 deg. C
It's a combination of temp, whether the rear screen heater is on etc.
It was posted here a couple of weeks back by a knowledgable member, try a search
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I was under the impression that it would heat up if you turn on the heat of your steering wheel.
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They are not coupled to anything else than outside temperature. No heated rear screen, no front screen demister and no steering wheel.
They come on as soon you turn the key and the outside temp is below a certain degree, but even in 2 digit temp figure, I think, as they are also used to clear water off the mirrors.
They come on as soon you turn the key and the outside temp is below a certain degree, but even in 2 digit temp figure, I think, as they are also used to clear water off the mirrors.
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i should probably know this..... but i dont.. how do you know if you have heated mirrors??? i have cold weather package/prem pkg. tia ericd
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Originally Posted by olli_535d' post='403563' date='Mar 16 2007, 07:52 PM
They are not coupled to anything else than outside temperature. No heated rear screen, no front screen demister and no steering wheel.
Have been angry about this feature in some 6-7 Beemers now.
The night temperature can have been some -10 C but when I leave for work
at 9 - 10 am the temps can be 4 C and the mirrows are icy :thumbsdown:
The side mirrows start defrosting at +3 C and below.
They should absolutely also be activated by rear window defrost and/or steering heating.
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The heated mirrors are activated as long as the key is in position 2.
Heated mirrors are individually controlled by the computer modules in each front door. The power applied is not uniform but controlled by software using the outside temperature as it is reported from the OBC. I have identified four degrees of heating depending on external temperature. The table below shows the ranges:
Temp Range % of Time
below -10C 100% (totally on)
-10C thru 0C 75%
0C thru 15C 50%
15C thru 25C 25%
above 25C 0% (totally off)
If you are unsure your mirrors are working the easiest test is:
1. Pry off the glass
2. Disconnect one of the wires on the mirrors
3. Connect an amp meter and watch the current draw based on temperature
If no current flows through then one fo the follows is true:
1. the external temperature is above 25C
2. the ignition key is not in position 2
3. the heating element in your mirror is broken
Heated mirrors are individually controlled by the computer modules in each front door. The power applied is not uniform but controlled by software using the outside temperature as it is reported from the OBC. I have identified four degrees of heating depending on external temperature. The table below shows the ranges:
Temp Range % of Time
below -10C 100% (totally on)
-10C thru 0C 75%
0C thru 15C 50%
15C thru 25C 25%
above 25C 0% (totally off)
If you are unsure your mirrors are working the easiest test is:
1. Pry off the glass
2. Disconnect one of the wires on the mirrors
3. Connect an amp meter and watch the current draw based on temperature
If no current flows through then one fo the follows is true:
1. the external temperature is above 25C
2. the ignition key is not in position 2
3. the heating element in your mirror is broken
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Great post E60M5E60
However, I have a stupid question. What is 'Position 2' for those of us with 'start buttons' not keys?
"the ignition key is not in position 2"
However, I have a stupid question. What is 'Position 2' for those of us with 'start buttons' not keys?