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Interior fan speed

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    Advanced Member

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  • 92 posts
  • LocationFife Scotland
  • Vehicle Driven:2019 Duster 1300cc

I thought that was normal? Eco mode changes the fan speeds etc to save fuel.

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I'm sure there was something mentioned about this in one of the Duster forums......something about "smart charging" but I can't seem to find it now.




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  • 1 posts
  • Locationnorth west uk
  • Vehicle Driven:sandero dci

Ok, after an exciting drive fiddling with the volt meter I can confirm my 2016 Logan (DCi90) has regen. braking and a Smarternator.
 Mine is the same volts but the fan speeds drops with engine on tickover/low revs
Key in ignition, no start: 12.2 volts
Start engine: volts creep up to 14.8 vdc, obviously under ECU control, then drops to 13.5.
Drive: volts immediately down to 12.8.
Come to downhill bit: foot off accelerator: 14.8 volts every time, then immediately back to 12.8 on application of accelerator.
Rinse and repeat: regen.braking happens every time you lift off the go pedal. It doesn't happen when you brake. Air-con and fan on makes no difference.
However, with headlights on the volts are at a constant 14.5 vdc.
I couldn't hear any fan pitch change during all this electro-malarky.

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