2019 Adaptive Cruise Surge

CTF2019

CTF2019

Active Member
<div class="bbWrapper">Anyone with adaptive cruise get a surge 1 mph above set speed?<br /> FL is flat, so it happens with me every 30-60sec.<br /> <br /> Trying to find out if there is a TSB and/or flash fix for the DASM as I will be getting a used MicroPod II registered soon…<br /> <br /> <b>EDIT: DASM update fixed issue! See post #9</b></div>
 
Last edited:
<div class="bbWrapper">2019 and has done it since day one..<br /> ACC and regular CC, makes no difference, just constantly surging and slowing.<br /> <br /> No code so dealer was useless...<br /> No TSB or fix that I am aware of so I don&#039;t use them at all.</div>
 
<div class="bbWrapper">I never noticed cruise in my GMC, Chevrolet, or GM cars..it just worked. This is not my first FCA vehicle, but our 300C SRT8 does not hunt for a cruise speed like my 2500. It will vary 2+ up or down and hunts for the setting the whole way.<br /> I also wonder if it is actually applying the brakes (with brake lights) going down a hill when the thing refuses to coast when I am NOT in Tow/Haul down hills. I would only expect grade braking in Tow/Haul....especially in my Hemi.</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 1972" data-quote="ClawSS" data-source="post: 228911" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=228911" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-228911">ClawSS said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> I never noticed cruise in my GMC, Chevrolet, or GM cars..it just worked. This is not my first FCA vehicle, but our 300C SRT8 does not hunt for a cruise speed like my 2500. It will vary 2+ up or down and hunts for the setting the whole way.<br /> I also wonder if it is actually applying the brakes (with brake lights) going down a hill when the thing refuses to coast when I am NOT in Tow/Haul down hills. I would only expect grade braking in Tow/Haul....especially in my Hemi. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Ive seen the brake lights come on going down a hill with my 22 not in tow haul when in ACC</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 1972" data-quote="ClawSS" data-source="post: 228911" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=228911" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-228911">ClawSS said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> I never noticed cruise in my GMC, Chevrolet, or GM cars..it just worked. This is not my first FCA vehicle, but our 300C SRT8 does not hunt for a cruise speed like my 2500. It will vary 2+ up or down and hunts for the setting the whole way.<br /> I also wonder if it is actually applying the brakes (with brake lights) going down a hill when the thing refuses to coast when I am NOT in Tow/Haul down hills. I would only expect grade braking in Tow/Haul....especially in my Hemi. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Adaptive cruise in all vehicles uses the brakes to hold speed. It would be nice if they&#039;d downshift first instead, but as far as I know no manufacturer does that.</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 1140" data-quote="jsalbre" data-source="post: 228916" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=228916" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-228916">jsalbre said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Adaptive cruise in all vehicles uses the brakes to hold speed. It would be nice if they&#039;d downshift first instead, but as far as I know no manufacturer does that. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Do you know if the regular cruise does the same?</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 1972" data-quote="ClawSS" data-source="post: 229021" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=229021" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-229021">ClawSS said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Do you know if the regular cruise does the same? </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Regular cruise does not.</div>
 
<div class="bbWrapper">The cruise in this is the best I have ever had, almost never varies. Will never use the adaptive.</div>
 
<div class="bbWrapper">Going to update here. <br /> <br /> My DASM (Cruise Control module on windshield) was on original software. A DASM update fixed this cruise only surging issue. Additionally, the cruise control is MUCH smoother than before. <br /> <br /> DASM was updated from 56029827AF to 56029827AH. <br /> <br /> To get this flash at a dealer, you need them to perform a TSB. TSB 08-149-21 is the most recent. If they want a reason, tell them the Forward Collision Warning &quot;BRAKE&quot; randomly pops up sometimes.</div>
 

Attachments

<div class="bbWrapper"><blockquote data-attributes="member: 3369" data-quote="CTF2019" data-source="post: 231125" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231125" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231125">CTF2019 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Going to update here.<br /> <br /> My DASM (Cruise Control module on windshield) was on original software. A DASM update fixed this cruise only surging issue. Additionally, the cruise control is MUCH smoother than before.<br /> <br /> DASM was updated from 56029827AF to 56029827AH.<br /> <br /> To get this flash at a dealer, you need them to perform a TSB. TSB 08-149-21 is the most recent. If they want a reason, tell them the Forward Collision Warning &quot;BRAKE&quot; randomly pops up sometimes. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote><br /> If this does indeed fix the surging then that would fantastic!<br /> I&#039;ve been unable to tolerate using either the CC or the ACC for the last 3 yrs because of the surging!</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 181" data-quote="Gondul" data-source="post: 231146" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231146" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231146">Gondul said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> If this does indeed fix the surging then that would fantastic!<br /> I&#039;ve been unable to tolerate using either the CC or the ACC for the last 3 yrs because of the surging! </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>I’ll be looking while I&#039;m driving for the next few days to be sure, but before, the truck would repeatedly accelerate aggressively 1mph over set speed. I could actually see it on the tuner as the mg/stroke (fuel rate) would climb suddenly every 30 seconds or so. You can also see the instant MPG swinging up and down as a result of the fuel rate change.<br /> <br /> The flash is large (38MB) for a module flash and took 50 minutes to write. Took it on the freeway afterwards was unable to see any surging. <br /> <br /> Also, before the cruise would aggressively accelerate to set speed and let off hard to maintain it. Now it’s a gentle acceleration if it’s within 5 mph of set speed.</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 3369" data-quote="CTF2019" data-source="post: 231153" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231153" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231153">CTF2019 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> I’ll be looking while I&#039;m driving for the next few days to be sure, but before, the truck would repeatedly accelerate aggressively 1mph over set speed. I could actually see it on the tuner as the mg/stroke (fuel rate) would climb suddenly every 30 seconds or so. You can also see the instant MPG swinging up and down as a result of the fuel rate change.<br /> <br /> The flash is large (38MB) for a module flash and took 50 minutes to write. Took it on the freeway afterwards was unable to see any surging.<br /> <br /> Also, before the cruise would aggressively accelerate to set speed and let off hard to maintain it. Now it’s a gentle acceleration if it’s within 5 mph of set speed. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote><br /> Yeah, please post back up what you experience.<br /> And yes, I&#039;ve had the same experience... you can feel the constant slowing down/speeding up which you could see flicker on the speedo... never thought of looking at he mpg gauge gauge.</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 3369" data-quote="CTF2019" data-source="post: 231125" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231125" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231125">CTF2019 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Going to update here. <br /> <br /> My DASM (Cruise Control module on windshield) was on original software. A DASM update fixed this cruise only surging issue. Additionally, the cruise control is MUCH smoother than before. <br /> <br /> DASM was updated from 56029827AF to 56029827AH. <br /> <br /> To get this flash at a dealer, you need them to perform a TSB. TSB 08-149-21 is the most recent. If they want a reason, tell them the Forward Collision Warning &quot;BRAKE&quot; randomly pops up sometimes. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>I abandoned ACC after the first time I used it for all the reasons you mentioned above. Regular CC works fine but the ACC is just way too agressive, especially when accelerating back to set speed after passing a slower vehicle. Thanks for posting this fix [emoji106]<br /> <br /> Sent from my SM-T860 using Tapatalk</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 1710" data-quote="Power247" data-source="post: 231215" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231215" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231215">Power247 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> I abandoned ACC after the first time I used it for all the reasons you mentioned above. Regular CC works fine but the ACC is just way too agressive, especially when accelerating back to set speed after passing a slower vehicle. Thanks for posting this fix [emoji106]<br /> <br /> Sent from my SM-T860 using Tapatalk </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>That&#039;s funny, I find ACC acceleration to be too slow after passing.</div>
 
<div class="bbWrapper">Mine (2022) works as intended, smooth acceleration. Sometimes stays 1mph below setpoint for a while, but that&#039;s not really important.<br /> <br /> What I noticed, however, is that if you are behind a vehicle on ACC and hit the indicator/blinker to pass, as soon as you do that the truck starts accelerating and closes the gap. Do yours do that, too?</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 23709" data-quote="DrTron" data-source="post: 231266" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231266" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231266">DrTron said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Mine (2022) works as intended, smooth acceleration. Sometimes stays 1mph below setpoint for a while, but that&#039;s not really important. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>After the update, that’s how mine is driving now. Really smooth. <br /> <br /> Also, I noticed it doesn’t brake hard anymore if someone is slowing in front. I slows down smoothly now.<br /> <br /> <blockquote data-attributes="member: 23709" data-quote="DrTron" data-source="post: 231266" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231266" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231266">DrTron said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> What I noticed, however, is that if you are behind a vehicle on ACC and hit the indicator/blinker to pass, as soon as you do that the truck starts accelerating and closes the gap. Do yours do that, too? </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>This is by design.</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 3369" data-quote="CTF2019" data-source="post: 231267" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231267" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231267">CTF2019 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> This is by design. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Yes, I figured. I like it this way, my wife, not so much ;-)</div>
 
<div class="bbWrapper">Can confirm after driving more today that this flash fixed my surge with cruise.<br /> <br /> <a href="https://hdrams.com/forum/members/181/" class="username" data-xf-init="member-tooltip" data-user-id="181" data-username="@Gondul">@Gondul</a> <br /> Have the dealer flash yours. Don’t mention the surge, just use the TSB as the reason.</div>
 
<div class="bbWrapper"><blockquote data-attributes="member: 3369" data-quote="CTF2019" data-source="post: 231273" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/forum/goto/post?id=231273" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-231273">CTF2019 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Can confirm after driving more today that this flash fixed my surge with cruise.<br /> <br /> <a href="https://hdrams.com/forum/members/181/" class="username" data-xf-init="member-tooltip" data-user-id="181" data-username="@Gondul">@Gondul</a><br /> Have the dealer flash yours. Don’t mention the surge, just use the TSB as the reason. </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote><br /> Oh, absolutely... while I&#039;ve had a good relationship with the Service Advisor, I&#039;m certainly not given them a reason to *not* do it!</div>
 
<div class="bbWrapper"><a href="https://hdrams.com/forum/members/3369/" class="username" data-xf-init="member-tooltip" data-user-id="3369" data-username="@CTF2019">@CTF2019</a> holy crap... your suggestion was absolutely ace!!<br /> Had the TSB done earlier this week... just drove down to Miami and both CC and ACC held speed with ZERO surging. <br /> Braking and acceleration are still a bit aggressive for my liking, but easily enough to work around.</div>
 
You must log in or register to reply here.
Back
Top