Interesting observation with max heat and the hybrid system - AcuraZine - Acura Enthusiast Community

Go Back  AcuraZine - Acura Enthusiast Community > AcuraZine RL/RLX Community > Third Generation RLX (2013+)
Reload this Page >

Interesting observation with max heat and the hybrid system

Notices

Interesting observation with max heat and the hybrid system

Old 08-25-2017, 07:40 AM
  #1  
Registered Member
Thread Starter
 
Limelight's Avatar
 
Join Date: Sep 2012
Location: Toronto, ON
Posts: 531
Thanked 304 Times in 163 Posts
Interesting observation with max heat and the hybrid system

It was a little cool this morning and I thought it was a good opportunity to fire up the heat on the HVAC system to burn off any dust etc from the heating element as a result of lack of use over the summer months.

I opened up the sunroof and cranked the heat up to MAX. What surprised me was that I couldn't get the car to go into EV when the temp setting was at MAX. When I was at a street light stopped for example, the ICE would run but if I turned the temperature down by only one degree from MAX, the ICE would shut off and go into EV.

I assume then that maximum heat draws a significant amount of power which requires the ICE to run? If so, I don't see the value in ever using MAX on a very cold day but rather set it one degree less in conjunction with the heated steering wheel and seats...
Limelight is offline  
Old 08-25-2017, 08:08 AM
  #2  
Registered Member
 
Join Date: Oct 2003
Location: NY
Posts: 1,167
Thanked 729 Times in 405 Posts
That is correct! Heavy use of the climate control, will not allow the auto start/stop system activate.

This is from the OM:

pgeorg is offline  
The Following User Says Thank You to pgeorg For This Useful Post:
Limelight (08-25-2017)
Old 08-25-2017, 08:20 AM
  #3  
Registered Member
Thread Starter
 
Limelight's Avatar
 
Join Date: Sep 2012
Location: Toronto, ON
Posts: 531
Thanked 304 Times in 163 Posts
Thanks for the explanation! In theory the logic makes sense - if the climate control system is in heavy use, the auto stop might not activate. But the system logic just seems so linear to disengage at MAX but operate as expected with only one degree variance. I can't imagine the system load is that severely different between MAX and one degree less.

But thanks for the OM explanation - I really should read that thing sometime
Limelight is offline  
The Following User Says Thank You to Limelight For This Useful Post:
pgeorg (08-25-2017)
Old 08-25-2017, 08:28 AM
  #4  
Registered Member
 
Join Date: Oct 2003
Location: NY
Posts: 1,167
Thanked 729 Times in 405 Posts
You are too funny

Most cars that have the conventional auto start/stop system, deactivate it when the climate control is set to MAX COOL-MAX HEAT.

My brother in law just leased a Guilia, and that is in the owners manual also.

I think they just do it to be on the safe side......
pgeorg is offline  
The Following User Says Thank You to pgeorg For This Useful Post:
Limelight (08-25-2017)
Old 08-25-2017, 11:07 AM
  #5  
Registered Member
 
getakey's Avatar
 
Join Date: Sep 2005
Posts: 3,799
Thanked 391 Times in 293 Posts
max heat needs engine heat - I do not believe it is a heat pump. Max cool would require more electrical power
getakey is offline  


Thread Tools
Search this Thread

Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 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.