Technical Wots this switch do then?

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Technical Wots this switch do then?

Joined
Jun 24, 2008
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Location
Otley, Yorkshire
hi y'all. really sorry but my curiosity has got the better of me here. does anyone know what the rear screen heater switch does in a doblo cargo van? when it's pushed a small yellow light appears on the rev counter and you get a click from under the dashboard as if a relay is operating but nothing seems to happen. I was under the impression that Fiat wouldn't fit something that didn't do anything and save themselves ten bob. maybe something is happening and i just aint spotted it yet, in that case apologies for my stupidness......:eek:
 
hi, the switch is to the bottom right of the hazard light switch, has a box with wavy arrows going up thro' it. I never thought of it having heated mirrors, it was a 'special edition' cargo if there is such a thing and it came with factory fitted electric mirrors. can't say the mirrors have ever fogged up as far as i can remember but will run around tomorrow with it switched on and see if they get warm. thanks(y)
 
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