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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Residual heat REST.



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      11-12-2013, 03:28 PM   #1
v6turbo
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Residual heat REST.

How great is the residual heat feature, first cold day here in the south, had to go in some place for a while and decided to try it out. Came back out to the car after about 20 min and the interior was still warm. Think I will be using this quite a bit this winter.
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      11-12-2013, 03:46 PM   #2
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      11-12-2013, 03:47 PM   #3
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Quote:
Originally Posted by v6turbo
How great is the residual heat feature, first cold day here in the south, had to go in some place for a while and decided to try it out. Came back out to the car after about 20 min and the interior was still warm. Think I will be using this quite a bit this winter.
I have been hearing about this but never actually used it how do you do it again?
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      11-12-2013, 03:57 PM   #4
v6turbo
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Quote:
Originally Posted by Spaceegrayy View Post
I have been hearing about this but never actually used it how do you do it again?
The round button on the right that controls the temp. for the passenger side, on my car it says REST with heat symbol lines, after turning the car off and removing the fob push in on it the light comes on and the blower starts pushing warm air into the interior. If you have Idrive you can set the air flow rate, low, medium and hight.
I have read on here a while back that function was no longer available after 07, I might be wrong. Someone else might be able to correct this statement if it's not correct.

Last edited by v6turbo; 11-12-2013 at 04:05 PM.
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      11-12-2013, 04:05 PM   #5
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Quote:
Originally Posted by v6turbo View Post
The round button on the right that controls the temp. for the passenger side, on my car it says REST with heat symbol lines, after turning the car of and removing the fob push in on it the light comes on and the blower starts pushing warm air into the interior. If you have Idrive you can set the air flow rate, low, medium and hight.
I have read on here a while back that function was no longer available after 07, I might be wrong. Someone else might be able to correct this statement if it's not correct.
The LCI's have an "ALL" button here instead of the "REST" button. You can code the button back to "REST" functionality, but that's the only way I know (or can remember off the top of my head) how to do it.




There is a big thread about this on here somewhere I remember seeing.
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      11-12-2013, 04:08 PM   #6
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My 07 335 E92 has Rest, look forward to using it.
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      11-12-2013, 04:10 PM   #7
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2008 has it as well ..works great
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      11-12-2013, 04:12 PM   #8
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Ah, never quite understood how to use this feature...

But know, I think i'll use this a lot!

I thought is was something you used when the car was running. Never would have guessed to use it like OP stated.

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      11-12-2013, 04:14 PM   #9
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my 09 has it.... I haven't tried messing with it in Idrive, but so far it works great
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      11-12-2013, 04:15 PM   #10
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I dont think I ever used this feature here ins San Diego, but just make sure you all have a good healthy battery since this will take a bit of load to your battery.
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      11-12-2013, 04:29 PM   #11
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I have no idea why it can't be a combined ALL/REST button? I mean leave it set to "ALL" while the car is running so you can change the temp controls... but the second you shut off the motor... you can use it as the "REST" feature.

Seems like all anyone has to do is hit the fan sped button once the motor is shut off to get the "equivalent" of a REST feature? For what it's worth... my '08 has the REST button.
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      11-12-2013, 04:42 PM   #12
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Quote:
Originally Posted by GoRomeo View Post
I dont think I ever used this feature here ins San Diego, but just make sure you all have a good healthy battery since this will take a bit of load to your battery.
It will shut off if the battery doesn't have enough amps to keep the fan running. So there no worries about it running the battery down to the point that the car won't start.
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      11-12-2013, 05:05 PM   #13
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Quote:
Originally Posted by v6turbo View Post
It will shut off if the battery doesn't have enough amps to keep the fan running. So there no worries about it running the battery down to the point that the car won't start.
True, but some folks here complained using this feature often will drain your battery more than normal conditions.

In my case REST feature stopped working along with the rear defrost when my battery was low. Until I replaced, both features ware able to work again.
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      11-12-2013, 05:41 PM   #14
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I live in California so I don't necessarily need it as much as eastern states but when I do use it now it's great coming to a warm cabin, and I love how the rear defroster saves it setting after you turn off the car and come back.
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      11-12-2013, 06:07 PM   #15
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this benefit is brought to you by the electric water pump.
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      11-12-2013, 06:15 PM   #16
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Quote:
Originally Posted by v6turbo
How great is the residual heat feature, first cold day here in the south, had to go in some place for a while and decided to try it out. Came back out to the car after about 20 min and the interior was still warm. Think I will be using this quite a bit this winter.
Wouldn't know, because BMW changed it to "ALL" in 2011

The one thing I miss about my 2009 328xi coupe. the ONLY thing
Ok...maybe the heated steering wheel
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      11-12-2013, 06:27 PM   #17
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I thought it was so I could take naps while driving.......kidding this feature is awesome.
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      11-12-2013, 08:36 PM   #18
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In my '09xi...use it often in the winter. I believe it will only run for 15 or 20 minutes (I can't remember which) max. It's just the fans blowing in the heat from the engine, so it doesn't tax your battery much anyhow.

Thank you to whoever invented heated steering wheels, as well. : )
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      11-12-2013, 10:22 PM   #19
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"REST" is definitely a great feature I use often in the winter. Massachusetts sucks, but my cabin is sweet!
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      11-13-2013, 07:56 AM   #20
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New owner and I just read about this feature in the manual yesterday. I love the idea. I will have to give it a try!
Hopefully it is not too taxing on the battery.
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      11-13-2013, 09:04 AM   #21
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Residual heat in sweeeeeeet -- I just have to remember to use it
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      11-13-2013, 09:30 AM   #22
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Quote:
Originally Posted by v6turbo View Post
How great is the residual heat feature, first cold day here in the south, had to go in some place for a while and decided to try it out. Came back out to the car after about 20 min and the interior was still warm. Think I will be using this quite a bit this winter.
That and heated steering wheel could be the greatest inventions/options of all time!!
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