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#1
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e70 35d "rest" activation?
On my 3 series, instead of the "AC max" button, it was a rest button, and that would run the heat in the car for a while in the winter while I ran in to grab groceries or the like. It's not as useful in the summer but it would probably keep fresh air circulating at least!
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'10 X5 35d- 279k mi, deleted and DUDMD stage 2, daily and tow vehicle '01 330i- Drift car: SLR Super angle, BC coils- keep it simple '07 335i 6mt - Sold @ 171k miles- stage 2 daily commuter for 2 years |
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#2
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Did you look in the owner's manual? I ask because I remember seeing it mentioned when I was first reviewing it after getting my X5.
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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim 2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim |
#3
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I've read through mine, but didn't see it mentioned. I'll look again!
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'10 X5 35d- 279k mi, deleted and DUDMD stage 2, daily and tow vehicle '01 330i- Drift car: SLR Super angle, BC coils- keep it simple '07 335i 6mt - Sold @ 171k miles- stage 2 daily commuter for 2 years |
#4
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With engine running, press start/stop button once to turn off ignition & keep on "Accessories", then simply push the bigger fan symbol to turn on REST function.
Depending on climate control settings, it may not engage (ie you don't want to recover engine heat if it's 90 degrees outside)... May also not work if the engine is cold |
#5
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Yes, check your owners manual for the RESIDUAL HEAT feature operation for your model.
There are restrictions...one of them is ambient temp, the battery has to be charged, and the car must be up to normal operating temps. (see 1st pic below) When it's summer and you want to run the HVAC blower without the engine running...that is a different feature. That is the parked car ventilation features (see 2nd image below). This is accessed in iDrive (I believe under climate) if you have the CIC. You can do an immediate ventilation (blower will run up to 30 minutes)...or you can set up to two different venting "events" to operate at a later date:
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Last edited by Qsilver7; 06-14-2019 at 05:43 PM. |
#6
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Activating the REST function (when conditions permit its activation), is also a good way to test the auxiliary water pump's function.
This auxiliary water pump is used to circulate more coolant thru the heater core than would otherwise flow without it under some circumstances. If the auxiliary water pump is not functioning correctly, you'll only have around 30 seconds to a minute of hot air after activating REST (Assuming engine coolant is fully warmed). With a properly functioning auxiliary water pump, you should have at least 5-10 minutes of pretty good heat coming from the vents that trails off to lukewarm in about 15 minutes, as this pump is used to continuously circulate hot coolant when using REST. |
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