A8 / S8 (D4 Platform) Discussion Discussion Forum for the D4 Audi A8 Produced from 2010-2017 Audi S8 produced from 2012-2017

Residual heating

 
Old 12-11-2018, 12:13 AM
  #1  
AudiWorld Member
Thread Starter
 
Join Date: Oct 2017
Location: Glasgow, Scotland
Posts: 247
Likes: 0
Received 0 Likes on 0 Posts
Default Residual heating

Discovered the other day that if the car is off and you hold down the fan button for a couple of seconds the car will be heated with the residual heat from the coolant for an hour. Not tried it for that long but I have used it a few times when I've driven somewhere, got out to do something for 10 - 15 minutes and left it on (with the car off and doors locked) and come back in and it's still nice and toasty and blowing warm air. Nice little feature that some other folks might not know about.
davey_b is offline  
Old 12-11-2018, 03:26 AM
  #2  
AudiWorld Member
 
Join Date: Apr 2017
Posts: 264
Likes: 0
Received 0 Likes on 0 Posts
Default

TinyElviss knew
Twglasgow is offline  
Old 12-11-2018, 04:32 AM
  #3  
AudiWorld Member
 
Kelzo's Avatar
 
Join Date: Mar 2018
Posts: 118
Likes: 0
Received 0 Likes on 0 Posts
Default

Does this work with the a/c as well?

Will have to try the heat today...being below freezing and all.
Kelzo is offline  
Old 12-11-2018, 04:38 AM
  #4  
AudiWorld Member
 
Join Date: Aug 2018
Posts: 132
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Kelzo
Does this work with the a/c as well?

Will have to try the heat today...being below freezing and all.
No it won't work with the A/C as the engine needs to be running to run the compressor. In heat all it does is circulate the hot coolant through your heater core and run the fan all of which can be done on battery power....
Jibsymalone is online now  
Old 12-11-2018, 04:49 AM
  #5  
D4 in PA
 
TinyElviss's Avatar
 
Join Date: Jun 2012
Location: Beaver Falls, PA
Posts: 347
Received 0 Likes on 0 Posts
Default

When you engage the feature, you can also adjust the fan speed. Mine defaults to 3.

It will run up to 30 minutes, so in the interest of battery life I turn my fan speed down to 1 if it's going to be running for the entire cycle. Still keeps the car toasty!
TinyElviss is offline  
Old 12-11-2018, 07:57 PM
  #6  
Audiworld Junior Member
 
Join Date: Jan 2008
Location: Pittsburgh, PA
Posts: 48
Likes: 0
Received 0 Likes on 0 Posts
Default

Great tip everyone. Tried it today while waiting in drive through lane at pharmacy. Works like a charm.
chris355 is offline  
Old 12-12-2018, 04:31 AM
  #7  
AudiWorld Member
 
virtualrc's Avatar
 
Join Date: Dec 2018
Location: DFW
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Default

Nice tip. Thanks for posting.
virtualrc is online now  
Old 12-14-2018, 02:22 PM
  #8  
AudiWorld Member
 
SWelsch's Avatar
 
Join Date: Apr 2015
Location: Maryland/Georgia
Posts: 194
Likes: 0
Received 0 Likes on 0 Posts
Default

Best tip of the year. Thanks!
SWelsch is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Audphile
Audi A5 / S5 / RS5 Coupe & Cabrio (B9)
7
06-19-2017 04:56 AM
audi40
A6 (C7 Platform) Discussion
6
03-11-2014 07:58 AM
alms_lefko
TT (Mk1) Discussion
8
11-26-2008 01:54 PM
deplach
A4 (B5 Platform) Discussion
9
06-14-2005 07:36 AM
Brdman*
Audi 100 / A6 (C4 Platform)
6
01-26-2004 11:47 AM


Thread Tools
Search this Thread
Quick Reply: Residual heating


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: