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  #13  
Old 07-29-2014, 11:49 AM
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Re: Aero Mode Engagement

Quote:
Originally Posted by jacko15 View Post
Yes, I read that. I'm a little confused about your original question. I still haven't read anywhere, including your last post, about aero behavior when ECO mode is off. It says what to expect when ECO mode is enabled, but doesn't explain what to expect when ECO mode is off. It's my assumption that aero behaves the same with ECO mode on or off. It only changes in Sport mode. Where are you finding "ECO off" aero behavior?

Here is the entire section from page 126 of the USER GUIDE (not the owners manual):

• Aero Mode (Lowers the vehicle approximately 0.6 in (15 mm) – This position
provides improved aerodynamics by lowering the vehicle. The vehicle will automatically
enter Aero Mode when the vehicle speed remains between 99 km/h
(62 mph) and 106 km/h (66 mph) for greater than 20 seconds or if the vehicle
speed exceeds 106 km/h (66 mph). The vehicle will return to NRH from Aero Mode
if the vehicle speed remains between 48 km/h (30 mph) and 56 km/h (35 mph)
for greater than 20 seconds or if the vehicle speed falls below 48 km/h (30 mph).
The vehicle will enter Aero Mode, regardless of vehicle speed if the shift lever is in
the “SPORT” position.
NOTE:
When ECO Mode is enabled the air suspension system lowers the vehicle to Aero
mode when the vehicle speed is between 52 mph (84 km/h) and 56 mph (90 km/h)
for 20 seconds or goes above 56 mph (90 km/h). The vehicle will exit Aero mode if
the vehicle speed remains between 20 mph (32 km/h) and 25 mph (40 km/h) for
20 seconds or if the vehicle speed falls below 20 mph (32 km/h).


EDIT: This description is also on page 425 in the Owners Manual (8th edition). To summarize, eco-mode off has a 62mph threshold and eco-mode on has a 52mph threshold. I haven't tested mine to see if that is how it acts.

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  #14  
Old 07-29-2014, 11:51 AM
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Re: Aero Mode Engagement

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Originally Posted by frall9 View Post
Hi lstowell,

As I mentioned in my post, I tried with ECO both ON and OFF with the same result.
Well, then its broke or your speedometer is broke.
......or the dealer is correct.
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  #15  
Old 07-29-2014, 11:54 AM
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Re: Aero Mode Engagement

Quote:
Originally Posted by frall9 View Post
MDBones, I don't think you understand the issue. Regardless of the time it takes for the suspension to adjust, no adjustment should take place at all below 62 mph when ECO mode is disabled. In my vehicle the suspension is automatically lowering to aero with ECO OFF at speeds over 52 mph. According to the OM this should not happen.

And again, Rich Mac, thanks for the reply but as I mentioned in my post I am very aware that using sport mode locks the suspension in aero. However that neither answers the question of whether the OM is just wrong about the listed speeds or whether my vehicle has a software issue that my dealer should correct. Again my main concern is things operating as described and according to the OM.


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You might wish to contact Jeep directly if you want to sanity check information from your dealer.

The behavior is pretty much what I see with ECO on, which I tend to leave on with the Hemi to help reduce fuel expenses... I wonder if something is telling your suspension controls that you are in ECO mode when you are not?

... or the book needs an errata page.
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  #16  
Old 07-29-2014, 12:01 PM
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Re: Aero Mode Engagement

I agree with Bill de about the OM being poorly written, but I guess I'm simply asking if other folks can disable eco mode at some point during a drive and report back if aero mode is engaging in the 55 mph range for them as well? At least we'll know if the OM is actually wrong and maybe they will update it in the 9th or 10th addition.








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  #17  
Old 07-29-2014, 12:05 PM
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Re: Aero Mode Engagement

Quote:
Originally Posted by frall9 View Post
I agree with Bill de about the OM being poorly written, but I guess I'm simply asking if other folks can disable eco mode at some point during a drive and report back if aero mode is engaging in the 55 mph range for them as well? At least we'll know if the OM is actually wrong and maybe they will update it in the 9th or 10th addition.
I took it out this morning. With eco off aero doesn't engage until going somewhere over 60mph. With eco on, it kicks in between 50 and 55.


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Old 07-29-2014, 10:42 PM
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Re: Aero Mode Engagement

Well I just tried it with ECO off and it went into Aero @ 55. Take your pick what's normal.
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Old 07-30-2014, 08:18 PM
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Re: Aero Mode Engagement

I too did the test. It went into aero mode when traveling at 55mph regardless of eco-mode enabled or disabled. (I pulled over and stopped between testing eco modes.)
Just another example of the software not matching the owners manual and user guide.
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Old 07-31-2014, 12:50 AM
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Re: Aero Mode Engagement

My early build 2014 behaves exactly as bill_de describes. Definite difference between ECO on and off. In ECO, after about 20 seconds over 50 mph or more quickly if I am approaching 60 mph, it goes to aero. Today, I turned ECO off as soon as I went over 50 mph. I cruised just below 60 mph and it stayed at normal ride height. I wasn't on a road where I could sustain over 60 mph so it didn't go into aero at all. I suspect that it would go into aero as the later manual revisions indicate if I sustained over 60 mph or so.


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  #21  
Old 08-01-2014, 02:15 PM
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Re: Aero Mode Engagement

Quote:
Originally Posted by mtnmerlin View Post
I too did the test. It went into aero mode when traveling at 55mph regardless of eco-mode enabled or disabled. (I pulled over and stopped between testing eco modes.)
Just another example of the software not matching the owners manual and user guide.
It tends to be easier and cheaper to change the om and ug...
... just sayin'
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