how do you use heated mirrors?
03-16-2007, 07:26 PM
#22
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Originally Posted by E60M5E60' post='403657' date='Mar 16 2007, 02:01 PM
They should defrost at the same speed and at about 2 mins any frost or ice (reasonable amount - sorry swedish guys) should melt. What you can do;
1. Take the mirror crystals off
2. Disconnect the heating wires
3. Measure the resistance of the crystals with an omh-meter. Should be identical or close
4. Measure the voltage supplied to the mirrors (on wires you disconnected from the mirrors). Should be identical.
In your case there is of the following things happening;
1. The resistance of the heating elements is far apart for various reasons such as defective part, different OEMs (Ask dealer to replace the mirror glass with the higher resistance)
2. If the resistance is the same spray the connector and the wires of the heating element with contact cleaner.
3. If the voltage supplied to the mirrors is not the same (in your case the mirror that defrosts later should provide less voltage than the other side) then ask the dealer to investigate the door modules.
Good luck
1. Take the mirror crystals off
2. Disconnect the heating wires
3. Measure the resistance of the crystals with an omh-meter. Should be identical or close
4. Measure the voltage supplied to the mirrors (on wires you disconnected from the mirrors). Should be identical.
In your case there is of the following things happening;
1. The resistance of the heating elements is far apart for various reasons such as defective part, different OEMs (Ask dealer to replace the mirror glass with the higher resistance)
2. If the resistance is the same spray the connector and the wires of the heating element with contact cleaner.
3. If the voltage supplied to the mirrors is not the same (in your case the mirror that defrosts later should provide less voltage than the other side) then ask the dealer to investigate the door modules.
Good luck
03-17-2007, 10:35 AM
#23
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My Ride: E60 530dA 3/2004
Originally Posted by xxterxx' post='403521' date='Mar 16 2007, 11:44 AM
sometimes i touch its hot...sometimes its not... how does it work actually? 
So: belov - 25 C outside mirros are heated continously and over + 10 C those are not at all. Between those two temperatures heating is cycled (no idea about the interval). This is how it works in E39.
but in E60 there is an addional element: wipers! So if the wipers are wipeing, mirros are heated with more intensity + E39 temperature parameters.
And finally: if voltage drops below 10,8 V, heating is swicthed off. It is not mentioned, what is the switch on voltage, but definitely there must be some.
03-19-2007, 09:09 PM
#24
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My Ride: In a place where the Mercedes density is the highest in the world (no. of MB per square kilometer) I choose a Bimmer, why? because of one thing "The Ultimate Driving Experience"
My Ride:
523i Steptronic, Silver Grey Exterior, Black Interior with Black Dakota Leather and Maple Wood Trim. Chrome Grill, Style 123 rim, Airbags everywhere, PDC, Rain sensor, Auto lights, Moveable front armrest, Advance Climate Control, Glass Sunroof, Auto dimming interior and exterior mirror with foldable functions, Extended Lights package, 6 CD changer in glove box, Power seats with memory, Power adjustable steering wheel, Power rear sunblinds.
Add ons: 123 wheels, chrome grill, K&N Hi flow filter, Eibach Pro Kit, e60.net decal and 24,000km
Past rides:
2001 Nissan Xterra SE
1999 E39 523i
1999 E46 323i
1996 Acura Integra LS
Originally Posted by olli_535d' post='403563' date='Mar 17 2007, 01:52 AM
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.
From some searching and through my observation, is both temp related and whether you turn on the rear defroster.
I've tried this, I drove in the rain for 30 mins without turning the defroster on and water is still there after the trip. The next time I start the car I hit the defroster button and water was gone and mirror was warm to the touch after 15 mins.
03-21-2007, 09:20 AM
#26
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My Ride: E60 530dA 3/2004
Originally Posted by nicke60gre' post='404854' date='Mar 20 2007, 02:40 AM
100% they're paired to the rear windscreen heater button 
As I put, I read it from WDS (Ok, it is possible BMW writes BS to their own system, I doubt).
So pls, read my earlier post about how it works.
Still, I haven't found the interval cycle. I'm sure I have seen it somewhere, but not in WDS.
03-23-2007, 05:58 PM
#27
Originally Posted by nicke60gre' post='404854' date='Mar 20 2007, 02:40 AM
100% they're paired to the rear windscreen heater button
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