Does anyone know if the front and rear heated window switches are electorally the same, as my front one will turn on but not off. The only way to turn it off is turn the engine off and restart. I know I will have to cut the plug slightly to make it fit but rear switches are under a tenner on eBay and front seem somewhat rare or pricey.
Heated front screen switch
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sierrafery
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it's a momentary switch so i doubt the switch is at fault as long as it doesnt light on when you restart the engine, it means it's not stuck...unfortunately it has a quite complicated management controlled by the BCU... be aware that if the aircon is on defrost mode the light on the switch stays on even if you push it as the heated screen is managed by the aircon unit too independently of the switch...turn the aircon off and see if the switch works this way...if not then things are becoming complicated, forget about the switch for now
brian47
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I would agree with Sierrafery (a very knowledgeable member).
The problem is that it's a Disco 2.
The dashboard switch is a momentary switch (a basic push-button) and sends a signal to the BCU and the BCU does the switching on and off, including the timing. Push once to switch on, push again to switch off or leave the circuit switched on to allow the timer to switch off.
Since the circuit is turning on properly there's nothing to suggest that a fault exists with the external bits, I would be inclined to get the settings of the BCU checked; I think that the default timings are five minutes for the front screen and mirrors and fifteen minutes for the rear screen, but they can be set to different values.
The problem is that it's a Disco 2.
The dashboard switch is a momentary switch (a basic push-button) and sends a signal to the BCU and the BCU does the switching on and off, including the timing. Push once to switch on, push again to switch off or leave the circuit switched on to allow the timer to switch off.
Since the circuit is turning on properly there's nothing to suggest that a fault exists with the external bits, I would be inclined to get the settings of the BCU checked; I think that the default timings are five minutes for the front screen and mirrors and fifteen minutes for the rear screen, but they can be set to different values.
discool
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"five minutes for the front screen and mirrors" Is this another one of the 700 improvements the D2 has ? 
For a D1 the mirrors integral heating elements in the glass will operate in conjunction with the heated rear window.
For a D1 the mirrors integral heating elements in the glass will operate in conjunction with the heated rear window.
sierrafery
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... that's why it's a D2 not 1discool said:
... off course that they overcomplicated a simple thing...everything else in what you've said is true(especially your first statementbrian47 said:
) except the highlighted part ...cos you can't alter those values whatsoeverRAVE - BCU - Operation - Heated screen said:
due to the red parts i said that if that switch doesnt work as it should there might be a complicated issue
So that's that idea out the window then. So if I am understanding this right the switch/aircon control sends a request to the bcu to turn on and the bcu turns on for a set time. I need to get this sorted as I am going to forget and burn out the elements. Thanks everyone so far.
Sorry Sierrafery did not read your post properly. hmm need to think about this
Sorry Sierrafery did not read your post properly. hmm need to think about this
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