[ANSWERED] Valet Mode: Why Not Limit the Car? - CorvetteForum - Chevrolet Corvette Forum Discussion



Ask Tadge Post your questions here for Corvette's Chief Engineer Tadge Juechter and then discuss the questions and his answers.

[ANSWERED] Valet Mode: Why Not Limit the Car?

Reply
 
 
 
Thread Tools Search this Thread
Old 04-12-2017, 05:17 PM   #1
jvp
Tech Contributor
Support Corvetteforum!
"Ask Tadge" Facilitator
Thread Starter
 
jvp's Avatar
 
Member Since: Mar 1999
Location: Oak Hill VA
Posts: 8,009
Thanked 774 Times in 226 Posts
Default [ANSWERED] Valet Mode: Why Not Limit the Car?

The original question is here.

Quote:
Vyper340 asked:
Why can't the valet mode also limit the performance of the car and not just activate the PDR? It is possible on some other vehicles since it is an electronically controlled feature. Given the nature of these vehicles, wouldn't it provide piece of mind for the owner to set and know the vehicle cannot be used to its capability when a feature like this is activated?
Quote:
Tadge answered:
Thanks for the suggestion Vyper340.

Valet mode is a GM corporate feature shared by many GM cars. It was not developed specifically for Corvette like the PDR (which was subsequently shared by a few other vehicles). We spend a lot of time with customers, and we didn't have a lot of requests for a feature like this. Most customers abhor the idea of a stranger taking their baby out of sight (or ear shot).

Once we decided it might have some value, we explored ways to make it even better for our customers. We did the work to integrate the PDR function into it and I believe are the only manufacturer in the world to have this ability to bring back video evidence of how the car was driven in its absence. We also talked about limiting performance but that quickly escalated into massive complications. Once you involve the Powertrain, all EPA, CARB, and global emissions regulations including diagnostics now have to be validated in both modes. It would have postponed introduction of the feature quite a bit. Yes, it is possible to do and yes, a few other manufacturers have done something like it (Including us on the C4 ZR-1). Like all customer suggestions, we will carry it forward and try to implement them when reasonable and practical. Thanks for the question. All customer feedback helps make the Corvette better and better.

One interesting side note on this topic. How much performance should remain in Valet mode? Pull out too little and you still have a really fast car that an inexperienced driver can get into trouble in. Pull out too much and safety critics will say the car doesn't perform as expected so the driver may not have the acceleration expected when he or she needs it. Where do you draw the line?
jvp is offline   Reply With Quote
The Following User Says Thank You to jvp For This Useful Post:
GreenGA (04-12-2017)
Old 04-13-2017, 12:00 PM   #2
BlueDevilZ51
CF Senior Member
 
BlueDevilZ51's Avatar
 
Member Since: Oct 2009
Location: Long Island New York
Posts: 901
Thanked 108 Times in 83 Posts
Default

Limit it to 200hp in valet mode. That would give it the power of the early C4 or present civic..lol

Last edited by BlueDevilZ51; 04-13-2017 at 12:00 PM.
BlueDevilZ51 is offline   Reply With Quote
The Following User Says Thank You to BlueDevilZ51 For This Useful Post:
Z06NJ (04-13-2017)
Old 04-13-2017, 10:34 PM   #3
maugust24
CF Senior Member
 
maugust24's Avatar
 
Member Since: Mar 2016
Location: Buena Park CA
Posts: 286
Thanked 48 Times in 33 Posts
Default

Why not just knock it down to around 30 mph? 99% of valet parking never leaves the parking lot so why would safety be a concern/issue? When we purchased the car we thought the PDR did limit the power. I was disappointed when i found out it didn't.
maugust24 is offline   Reply With Quote
Old 04-14-2017, 04:33 PM   #4
C7Northridge
Junior Member
 
Member Since: Feb 2017
Location: Northridge California
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Even though I don't give my vette to a valet, I would like to see a software update ,so it limits the car in valet mode.(30 MPH, would be great)
C7Northridge is offline   Reply With Quote
Old 04-15-2017, 09:12 PM   #5
lrobe22
CF Senior Member
St. Jude Donor '15
 
lrobe22's Avatar
 
Member Since: Jul 2008
Location: 200 AGL
Posts: 1,556
Thanked 79 Times in 47 Posts
Default

This was a great question.

I'd like to see valet mode force:
Wet mode
2,000rpm rev limit
20mph speed limit
lrobe22 is offline   Reply With Quote
Old 04-17-2017, 12:46 PM   #6
LoneStarCorvette
Junior Member
 
LoneStarCorvette's Avatar
 
Member Since: Apr 2017
Posts: 8
Thanks: 0
Thanked 3 Times in 3 Posts
Default I would definitely like to at least have the option

Quote:
Originally Posted by lrobe22 View Post
This was a great question.

I'd like to see valet mode force:
Wet mode
2,000rpm rev limit
20mph speed limit
I think your idea of wet mode is spot on, and +1 on both the 2000rpm and 20mph. I mean seriously, how quickly does a 17-year old need to park a car? BTW, Looking at your avatar...Army Aviator? Me too, UH-60M. Just retired 1Dec2016. And loving it!

Last edited by LoneStarCorvette; 04-17-2017 at 12:47 PM.
LoneStarCorvette is offline   Reply With Quote
The Following User Says Thank You to LoneStarCorvette For This Useful Post:
zigfire66 (04-23-2017)
Old 04-17-2017, 09:57 PM   #7
lrobe22
CF Senior Member
St. Jude Donor '15
 
lrobe22's Avatar
 
Member Since: Jul 2008
Location: 200 AGL
Posts: 1,556
Thanked 79 Times in 47 Posts
Default

Yessir congrats on retirement.

64's and 60's.
lrobe22 is offline   Reply With Quote
The Following User Says Thank You to lrobe22 For This Useful Post:
zigfire66 (04-23-2017)
Old 04-19-2017, 09:43 PM   #8
Vyper340
CF Senior Member
 
Vyper340's Avatar
 
Member Since: Dec 2016
Location: VB 757 VA
Posts: 184
Thanked 21 Times in 16 Posts
Default

SWEET! My question got selected!

Great response and thanks for the info and details. I fully understand the complications and appreciate the feedback. Knowing that the feature is in use in the ZR-1 and has been used with others demonstrates the possibilities. Deciding on the best limits is tough but let's face it, when in that mode it should be the most restrictive with throttle and maximum speed limits.

To answer your questions from my perspective, I believe a reasonable limit reduction of something like 50% and/or limit throttle control to coincide with the weather mode to reduce the possibility that a valet or teenager could lose control or worse. It could also be used for the teenager in the family so they could enjoy the car safely while giving peace of mind to the parents while trusting their "little angel" and creating a win win scenario allowing them to earn the trust and experience needed to grow up.

Just my $.02

PS - 2009 retired Navy here (Tomcats). Congrats on the retirement lrobe22.

Last edited by Vyper340; 04-19-2017 at 09:51 PM.
Vyper340 is offline   Reply With Quote
The Following User Says Thank You to Vyper340 For This Useful Post:
zigfire66 (04-23-2017)
Old 04-20-2017, 12:40 PM   #9
LoneStarCorvette
Junior Member
 
LoneStarCorvette's Avatar
 
Member Since: Apr 2017
Posts: 8
Thanks: 0
Thanked 3 Times in 3 Posts
Default Maybe an electronic tuner can help out with this

Just a thought, but if we can install a custom tune for our engine/powertrain, wouldn't if seem plausible that the same guy who writes those types of tunes could also write one for a valet-type mode? Just sayin'.

Off topic now - it's really cool to see so many of our US military peeps on this forum! I grew up a Navy brat myself. My pop was an Airdale, so I spent my young days at work with him whenever possible...always around jets on carrier decks, hangars, flight lines, etc. It's all I ever knew and consequently, it resulted in my own aviation career. Honored to serve and grateful to my Dad!
LoneStarCorvette is offline   Reply With Quote
The Following User Says Thank You to LoneStarCorvette For This Useful Post:
Vyper340 (04-25-2017)
Old 04-20-2017, 07:30 PM   #10
lrobe22
CF Senior Member
St. Jude Donor '15
 
lrobe22's Avatar
 
Member Since: Jul 2008
Location: 200 AGL
Posts: 1,556
Thanked 79 Times in 47 Posts
Default

yep a custom tune can easily be done that limits speed and rpm. let's do this Tadge.

Last edited by lrobe22; 04-20-2017 at 07:31 PM.
lrobe22 is offline   Reply With Quote
Old 04-22-2017, 09:59 AM   #11
golden2husky
CF Senior Member
 
Member Since: Apr 2014
Posts: 343
Thanked 50 Times in 34 Posts
Default

Quote:
Originally Posted by Vyper340 View Post
SWEET! My question got selected!

Great response and thanks for the info and details. I fully understand the complications and appreciate the feedback. Knowing that the feature is in use in the ZR-1 and has been used with others demonstrates the possibilities. Deciding on the best limits is tough but let's face it, when in that mode it should be the most restrictive with throttle and maximum speed limits.

To answer your questions from my perspective, I believe a reasonable limit reduction of something like 50% and/or limit throttle control to coincide with the weather mode to reduce the possibility that a valet or teenager could lose control or worse. It could also be used for the teenager in the family so they could enjoy the car safely while giving peace of mind to the parents while trusting their "little angel" and creating a win win scenario allowing them to earn the trust and experience needed to grow up.

Just my $.02

PS - 2009 retired Navy here (Tomcats). Congrats on the retirement lrobe22.
Vyper340:

Non Vette question. One, thank you for your service. Two, regarding Tomcats- these were made about 20 miles from where I grew up so a lot of folks around here are nostalgic about them as the program fed a region for many years*. As a young boy scout I recall someone bringing in a film (yeah, never said "video" back then) with a Grumman provided piece on the F-14A. That was maybe 1973 or so. Fast forward to a couple of years ago, somehow we got on the discussion about the plane...and a mention was made that these did have a tendency to get involved in the "flat stall" and one was in fact shown in the movie Top Gun. Was that true or just Hollywood exaggeration? My cousin is married to a retired Navy aviator (Chris Aquilino - quite the accomplished guy) and I always forget to ask him....

*Sadly most of the plants that built the great planes by Fairchild and Grumman were demolished and are now shopping malls....not all progress is good progress. As a little kid I still recall the big A-10 painted on the side of the factory that built them.
golden2husky is offline   Reply With Quote
The Following User Says Thank You to golden2husky For This Useful Post:
zigfire66 (04-23-2017)
Old 04-22-2017, 10:17 AM   #12
jvp
Tech Contributor
Support Corvetteforum!
"Ask Tadge" Facilitator
Thread Starter
 
jvp's Avatar
 
Member Since: Mar 1999
Location: Oak Hill VA
Posts: 8,009
Thanked 774 Times in 226 Posts
Default

Folks -

Quote:
Originally Posted by golden2husky View Post
Vyper340.
Let's keep the discussions here on topic, please.

Thanks.
jvp is offline   Reply With Quote
The Following User Says Thank You to jvp For This Useful Post:
Vyper340 (04-25-2017)
Old 04-25-2017, 09:48 AM   #13
Vyper340
CF Senior Member
 
Vyper340's Avatar
 
Member Since: Dec 2016
Location: VB 757 VA
Posts: 184
Thanked 21 Times in 16 Posts
Default

Quote:
Originally Posted by golden2husky View Post
Vyper340:

Non Vette question. One, thank you for your service. Two, regarding Tomcats- these were made about 20 miles from where I grew up so a lot of folks around here are nostalgic about them as the program fed a region for many years*. As a young boy scout I recall someone bringing in a film (yeah, never said "video" back then) with a Grumman provided piece on the F-14A. That was maybe 1973 or so. Fast forward to a couple of years ago, somehow we got on the discussion about the plane...and a mention was made that these did have a tendency to get involved in the "flat stall" and one was in fact shown in the movie Top Gun. Was that true or just Hollywood exaggeration? My cousin is married to a retired Navy aviator (Chris Aquilino - quite the accomplished guy) and I always forget to ask him....

*Sadly most of the plants that built the great planes by Fairchild and Grumman were demolished and are now shopping malls....not all progress is good progress. As a little kid I still recall the big A-10 painted on the side of the factory that built them.
Flat spin/stall is a fact and the beast Tomcat was suspectible to low speed stalls that would/could invert the aircraft as a result of the variable geometry wings, weight and aero. In terms of yaw induced incidents it generally occurred during engine output issues often combined with high G lower speed maneuvering, dogfighting and final approach carrier landings. We're all taught how to avoid and address those issues...

Back to the issue: valet mode restricting the output would be a very welcome feature when handing the keys over to the dealer, valets or teenagers.

Last edited by Vyper340; 04-25-2017 at 09:50 AM.
Vyper340 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • [ANSWERED] Valet Mode: Why Not Limit the Car?
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    Ask Tadge: Answer Thread jvp Ask Tadge 55 06-29-2017 05:51 PM
    [ANSWERED] 2017 upgrades for 2015&2016 model years jvp Ask Tadge 14 06-28-2017 06:37 PM
    [ASKED] Valet Mode: Why Not Limit the Car? Vyper340 Ask Tadge 4 03-25-2017 12:23 PM
    [ANSWERED] Can 'Performance Shift Active' be Explained in Detail jvp Ask Tadge 4 05-20-2016 11:02 PM
    If you have PDR, it's illegal to use it in Valet Mode tome C7 General Discussion 117 11-11-2014 08:52 PM


    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 02:42 AM.