Climate Control REST function - BMW 3-Series (E90 E92) Forum

Pwalo · 01-17-2012, 04:06 PM

I don't get how this feature is supposed to work - its the REST button (right hand side) on the climate system on my E91. Feature is supposed to provide warm air into the car when the engine is turned off but requires a certain set of circumstances before it will work - god knows what they are because I have had the car 20 months and it has only ever worked once - any advice welcomed.Wondered whether my battery might be low on charge retention as the voltage of the battery is one of the parameters that needs to be met according to the handbook.

Yoro35i · 01-17-2012, 04:37 PM

I know one of them is a warmed engine ...with keys in place n stop the engine then press rest function...suppose to draw warm air into cabin from the hot engine

parapaul · 01-18-2012, 02:05 AM

That's how I understand it - and it's worked the couple of times I've tried to use it.

Engine must have enough heat to warm the air flow.
Engine off, but keys still in so ignition on.

It doesn't last very long, even with a hot engine though.

Laney · 01-18-2012, 04:15 AM

The basic idea is:-

Stop the car. Turn engine off. Remove key. Press 'REST' button. Get out of car. Lock it and walk away to get some cash from cash machine. Pop into the shop and buy some bits. Return to car to have a warm cabin.

It works great on mine.

swanseahammer · 01-18-2012, 04:22 AM

Quote:

Originally Posted by Laney

The basic idea is:-

Stop the car. Turn engine off. Remove key. Press 'REST' button. Get out of car. Lock it and walk away to get some cash from cash machine. Pop into the shop and buy some bits. Return to car to have a warm cabin.

It works great on mine.

Same here. Works perfectly on mine.

LexS · 01-18-2012, 07:28 AM

Same here. Use it everytime I go to the shops when its cold as it has been.

You need to drive for at least 5 minutes before the engine will be deemed warm enough to draw heat from. I also understand the battery must be in good condition.

BanziBarn · 01-18-2012, 07:45 AM

Didn't know it worked when you were out of the car - that's a good feature!

doughboy · 01-18-2012, 07:53 AM

+1,

I use it mostly when leaving the car / kids at a garage or similar. works Great.

As soon as the heat source drops, it shuts off anyway.

bazz780 · 01-18-2012, 08:30 AM

iirc this will only work for max 20 minutes after engine off, will not work after that

TMP · 01-18-2012, 08:47 AM

Great feature...love it!

Its was dropped from the later LCI's though?

rich1068 · 01-18-2012, 08:53 AM

Not on my 2011 E91. But I do like how the heated seats come back on automatically if the car has only been stood for a short time. Saves valuable seconds of button pressing. I like to think I'll enjoy a longer and happier retirement thanks to BMW.

Laney · 01-18-2012, 09:18 AM

Quote:

Originally Posted by TMP

Great feature...love it!

Its was dropped from the later LCI's though?

I believe the car can be recoded to re-activate this function and remove the ALL function.

F104 · 01-20-2012, 12:23 PM

Found this somewhere at least a year ago, should answer most questions and more:

magic77 · 01-20-2012, 12:34 PM

I have it on my LCI and have never used it would have much prefered if it had the sync button to merge both zones

Pwalo · 01-20-2012, 04:54 PM

Post Christmas cash famine has meant that my 50 mile round trip to work has been spent at a wallet friendly 60 mph witht he cruuuz on - basically I have been maximising fuel economy - 47.8mpg on the last tank - beter than the economy meter was predicting however Miss Daisy driving probably hasn't got the coolant to temperature - sound far fetched - not really - The company I used to work for supplied the first Focus and Mondeo TDCi's with the thermostat and housing assemblies - and these cars never warmed up properly even after 15 miles I had 2 TDCI Focus's and they took forever to get hot- blame super efficient HPCR diesels - gave the Beemer a harder time the night after my post, pulled up on the drive and pushed the button and bingo - REST works a treat. Doh. Thanks for the responses

doughboy · 01-20-2012, 05:46 PM

Quote:

Originally Posted by magic77

I have it on my LCI and have never used it would have much prefered if it had the sync button to merge both zones

OCD.

See a therapist.

magic77 · 01-20-2012, 06:13 PM

Quote:

Originally Posted by doughboy

OCD.

See a therapist.

not really just a pain when the two are out of sync and fans are going mad, it just makes more sense to have all as that button and rest as somewhere else.

Most other cars I've driven with dual climate have the merge button there.

doughboy · 01-20-2012, 06:23 PM

sorry magic, missed off the '

' I was joking

But VAG have a merge function by holding the 'auto' button IIRC, so BMW don't need to waste a whole button just for 'all'.

chris_s1 · 01-21-2012, 05:48 AM

Quote:

Originally Posted by magic77

I have it on my LCI and have never used it would have much prefered if it had the sync button to merge both zones

I'm with you Magic, never used the rest button - would much prefer a sync

TMP · 01-22-2012, 01:11 PM

Quote:

Originally Posted by doughboy

sorry magic, missed off the '

' I was joking

But VAG have a merge function by holding the 'auto' button IIRC, so BMW don't need to waste a whole button just for 'all'.

Yeap, this is worked a treat in our Audi.

I did try it in the BM when i first got the car

Laney · 01-22-2012, 02:40 PM

I'm happy with the REST button.

Given the choice between a button that provides a heating feature or a button that means i don't have to rotate 2 dials (but provides no added value) I'd take the extra feature.

330i07 · 01-22-2012, 03:48 PM

I only used mine to test it, tbh it does the job well but Im never in a situation to actually use it.

01-17-2012, 04:06 PM	#1
Pwalo Private Drives: 118d m sport Le Mans blue 2009 Join Date: Jun 2010 Location: Guisborough Posts: 87 iTrader: (0)	Climate Control REST function I don't get how this feature is supposed to work - its the REST button (right hand side) on the climate system on my E91. Feature is supposed to provide warm air into the car when the engine is turned off but requires a certain set of circumstances before it will work - god knows what they are because I have had the car 20 months and it has only ever worked once - any advice welcomed.Wondered whether my battery might be low on charge retention as the voltage of the battery is one of the parameters that needs to be met according to the handbook.
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01-17-2012, 04:37 PM	#2
Yoro35i TROll Drives: E92 335I M Join Date: Aug 2010 Location: London Posts: 1,291 iTrader: (0)	I know one of them is a warmed engine ...with keys in place n stop the engine then press rest function...suppose to draw warm air into cabin from the hot engine __________________ MY08 E92 335i M Sport Auto - Eisenmann exhaust- Duke Dynamic Carbon fiber Performance Diffuser - Forge Intercooler - CoBB AP stage 1 + map - BC Filter - Cool Carbon S/T pads - Hel SS lines - Eibach pro Springs - Carbon fiber Grill - Carbon Spoiler - Carbon Mirror caps - Rolled arch - 313 Style Wheels - Michelin pilot super sports - Cree 20W Ebay leds - CIC control retrofit- More coming soon!

01-18-2012, 02:05 AM	#3
parapaul Lieutenant Colonel Drives: E91 330d M Sport Join Date: May 2010 Location: Stoke on Trent Posts: 1,948 iTrader: (1) Garage List 2007 E91 330D MSport [0.00]	That's how I understand it - and it's worked the couple of times I've tried to use it. Engine must have enough heat to warm the air flow. Engine off, but keys still in so ignition on. It doesn't last very long, even with a hot engine though. __________________

01-18-2012, 07:28 AM	#6
LexS Private First Class Drives: E90 320d M Sport Join Date: Feb 2011 Location: Coventry Posts: 177 iTrader: (0)	Same here. Use it everytime I go to the shops when its cold as it has been. You need to drive for at least 5 minutes before the engine will be deemed warm enough to draw heat from. I also understand the battery must be in good condition. __________________

01-18-2012, 07:45 AM	#7
BanziBarn Lieutenant Colonel Drives: BMW 330D E90 LCI Msport Join Date: Sep 2009 Location: London Posts: 1,695 iTrader: (0)	Didn't know it worked when you were out of the car - that's a good feature! __________________ Black 330d E90 LCI M Sport Saloon Auto. Privacy Glass, Cream Leather, 6FL, I-Drive/Nav/Bluetooth, Alpine hifi upgrade.

01-18-2012, 04:15 AM	#4
Laney First Lieutenant Drives: E90 330d M Sport auto Join Date: Dec 2011 Location: Selby, North Yorkshire Posts: 331 iTrader: (0) Garage List 2006 BMW 330d [4.00]	The basic idea is:- Stop the car. Turn engine off. Remove key. Press 'REST' button. Get out of car. Lock it and walk away to get some cash from cash machine. Pop into the shop and buy some bits. Return to car to have a warm cabin. It works great on mine.

01-18-2012, 07:53 AM	#8
doughboy Major General Drives: E91 335i LCI Manual Join Date: Jan 2009 Location: UK Posts: 5,759 iTrader: (2) Garage List 2009 335i Tourer E91N [5.00]	+1, I use it mostly when leaving the car / kids at a garage or similar. works Great. As soon as the heat source drops, it shuts off anyway.

01-18-2012, 08:30 AM	#9
bazz780 Second Lieutenant Drives: 2006 bmw 335d m sport Join Date: Nov 2011 Location: london Posts: 249 iTrader: (0)	iirc this will only work for max 20 minutes after engine off, will not work after that

01-18-2012, 08:47 AM	#10
TMP Colonel Drives: M135i Join Date: Nov 2008 Location: Cheshire Posts: 2,817 iTrader: (0)	Great feature...love it! Its was dropped from the later LCI's though? __________________ M-Lite & Family 5er

01-18-2012, 08:53 AM	#11
rich1068 Colonel Drives: F30 330d M Sport Join Date: Oct 2010 Location: UK Posts: 2,790 iTrader: (0)	Not on my 2011 E91. But I do like how the heated seats come back on automatically if the car has only been stood for a short time. Saves valuable seconds of button pressing. I like to think I'll enjoy a longer and happier retirement thanks to BMW.

01-20-2012, 12:34 PM	#14
magic77 Colonel Drives: 320 Join Date: Apr 2009 Location: Surrey Posts: 2,214 iTrader: (0)	I have it on my LCI and have never used it would have much prefered if it had the sync button to merge both zones __________________ Titanium Silver E90 LCI 320D M Sport Saloon - Logic 7/ USB Connectity and Bluetooth/ Visibility Pack (Xenons, Adaptive Lights,Auto Wipers Lights and Corner Lights) / Sun Protection Glass/M Spoiler / Brake Ducts / BMW Performance Pack / BBS Wheels / SS Cat Back straight through with BCS Backbox

01-20-2012, 04:54 PM	#15
Pwalo Private Drives: 118d m sport Le Mans blue 2009 Join Date: Jun 2010 Location: Guisborough Posts: 87 iTrader: (0)	Post Christmas cash famine has meant that my 50 mile round trip to work has been spent at a wallet friendly 60 mph witht he cruuuz on - basically I have been maximising fuel economy - 47.8mpg on the last tank - beter than the economy meter was predicting however Miss Daisy driving probably hasn't got the coolant to temperature - sound far fetched - not really - The company I used to work for supplied the first Focus and Mondeo TDCi's with the thermostat and housing assemblies - and these cars never warmed up properly even after 15 miles I had 2 TDCI Focus's and they took forever to get hot- blame super efficient HPCR diesels - gave the Beemer a harder time the night after my post, pulled up on the drive and pushed the button and bingo - REST works a treat. Doh. Thanks for the responses

01-20-2012, 06:23 PM	#18
doughboy Major General Drives: E91 335i LCI Manual Join Date: Jan 2009 Location: UK Posts: 5,759 iTrader: (2) Garage List 2009 335i Tourer E91N [5.00]	sorry magic, missed off the '' I was joking But VAG have a merge function by holding the 'auto' button IIRC, so BMW don't need to waste a whole button just for 'all'.

01-22-2012, 02:40 PM	#21
Laney First Lieutenant Drives: E90 330d M Sport auto Join Date: Dec 2011 Location: Selby, North Yorkshire Posts: 331 iTrader: (0) Garage List 2006 BMW 330d [4.00]	I'm happy with the REST button. Given the choice between a button that provides a heating feature or a button that means i don't have to rotate 2 dials (but provides no added value) I'd take the extra feature.

01-22-2012, 03:48 PM	#22
330i07 Enlisted Member Drives: 330i sport Join Date: Jan 2012 Location: Yorkshire Posts: 35 iTrader: (0)	I only used mine to test it, tbh it does the job well but Im never in a situation to actually use it.

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