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Old 08-11-2019, 11:40 PM   #21
Coach06
19/19 Unity MB
 
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Default Re: 2019 chassis cruise control issue

Quote:
Originally Posted by cjf_moraga View Post
This sounds similar to an issue I had when I picked up my 2019/2019 CB from Sacramento the other month, almost certainly before you. I had a message saying "Active Brake Assist disabled" or something like that.

I took it to MB of Fairfield and they updated the software. All fine now and 2,500 miles in.

Chris
Chris.. I have now had our 19/19 U24MB to three separate Mercedes dealers without a fix for our cruise control issue. I see below (message #18) that Widman has the same issue and Fairfield was NOT able to fix it. Widman now has an appointment (message #20) with Mercedes of Santa Rosa for the repair. do you have any information on your invoice/paperwork that would provide the software update that corrected your cruise control issue?
thanks
BruceC
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Old 08-11-2019, 11:45 PM   #22
Coach06
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Default Re: 2019 chassis cruise control issue

Quote:
Originally Posted by Widman View Post
Fairfield did not fix the cruise or could they fix the seat adjust. They did not have a clue, then called me 3 days later to say they could fix the seat adjust for $85! I have an appt at Santa Rosa MB, who are aware of both issues and could adjust.
Please obtain some detail on how they fix the cruise control... ie: bulletin number, software update revision number, etc. I will pass it along to the Fresno Mercedes dealer where our Unity now resides and perhaps they can obtain the same instructions for a cure.
Thanks
BruceC
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Old 09-05-2019, 12:20 AM   #23
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Default Re: 2019 chassis cruise control issue

I have a 2020 Tiffin Wayfarer built on the 2019 MB chassis and am having similar issues. I’ve taken it to Sears Imports Sprinter Service in Mpls and it wouldn’t fail for them during a test drive. I’m including a picture of the error message... https://share.icloud.com/photos/0Rs6...EA#Home_&_Glen
I’ll post a resolution I when I get one.
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Old 09-05-2019, 05:40 AM   #24
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Default Re: 2019 chassis cruise control issue

Quote:
Originally Posted by Coach06 View Post
Please obtain some detail on how they fix the cruise control... ie: bulletin number, software update revision number, etc. I will pass it along to the Fresno Mercedes dealer where our Unity now resides and perhaps they can obtain the same instructions for a cure.
Thanks
BruceC
Mercedes Santa Rosa fixed the seat back but could not fix the cruise control. Since there is a sensor in the seat that disengages the cruise if you lift off the seat, they could not disconnect.
I just have to keep my but planted on the seat cushion.
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Old 09-05-2019, 06:07 PM   #25
Coach06
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Default Re: 2019 chassis cruise control issue

Quote:
Originally Posted by Widman View Post
Mercedes Santa Rosa fixed the seat back but could not fix the cruise control. Since there is a sensor in the seat that disengages the cruise if you lift off the seat, they could not disconnect.
I just have to keep my but planted on the seat cushion.
Thanks Widman.. Just to make sure I am understanding you.. You do not see an erratic cruise control behavior except when you 'lift your butt off the seat'.. correct? Almost wish mine was that simple a fix.
Mercedes Fresno has received a new distance sensing 'module' and is installing it as I am writing this message. Will let you all know if this solves my erratic behavior (mine also disengages when lifting off the seat).
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Old 09-10-2019, 03:02 PM   #26
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Default Re: 2019 chassis cruise control issue

Resolved ever since I removed the “Purple Gel” seat cushion I’d been using... I can duplicate the error message by lifting my rear end off the seat. No problems since getting rid of the cushion.
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Old 10-18-2019, 02:33 AM   #27
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Default Re: 2019 chassis cruise control issue

Picked up a new 2020 Unity 24MB on the 2019 Chassis with all the safety bells and whistles. Drove it about 250 miles home so we had time to play with it. Had the same problem with my wife but not me. I weigh about 220lbs and she weighs about 115lbs. She is not heavy enough to keep the cruise control activated. Would pop off with error message "Active Distance Assist Canceled" after about 5 seconds to 5 minutes. She must be just almost heavy enough to keep it activated.
Called MB Customer Service and got the "cant adjust a safety device explanation." Talked to my local dealer and he promised to investigate and respond if he learns anything.

Seems like overkill safety.

Lst me know if there is any type of fix available.

Thanks
Hogan
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Old 10-18-2019, 06:05 AM   #28
Coach06
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Default Re: 2019 chassis cruise control issue

Quote:
Originally Posted by Hogan View Post
Picked up a new 2020 Unity 24MB on the 2019 Chassis with all the safety bells and whistles. Drove it about 250 miles home so we had time to play with it. Had the same problem with my wife but not me. I weigh about 220lbs and she weighs about 115lbs. She is not heavy enough to keep the cruise control activated. Would pop off with error message "Active Distance Assist Canceled" after about 5 seconds to 5 minutes. She must be just almost heavy enough to keep it activated.
Called MB Customer Service and got the "cant adjust a safety device explanation." Talked to my local dealer and he promised to investigate and respond if he learns anything.

Seems like overkill safety.

Lst me know if there is any type of fix available.

Thanks
Hogan
Thanks for posting Hogan. Forgot I committed to posting after retrieving my Unity from Fresno Mercedes. No joy. The cruise control is still erratic and gives the "Active Distance Assist Canceled“ message. I also notice if I adjust my position on the seat it disengages. If I sneeze loudly, it will disengage... obviously seat sensor.
Mine also has an interesting quirk, the ‘limit’ icon in the center screen will only display the legal truck speed not the posted speed for all other vehicles. We live in CA where multiple axle vehicles are limited to 55 mph. That is the maximum number it displays. I am thinking perhaps my Sprinter also has a software issue..
Does anyone else have this speed limit ‘error,?
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Old 10-18-2019, 08:08 PM   #29
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Post Re: 2019 chassis cruise control issue

Quote:
Originally Posted by Coach06 View Post
Thanks for posting Hogan. Forgot I committed to posting after retrieving my Unity from Fresno Mercedes. No joy. The cruise control is still erratic and gives the "Active Distance Assist Canceled“ message. I also notice if I adjust my position on the seat it disengages. If I sneeze loudly, it will disengage... obviously seat sensor.
Mine also has an interesting quirk, the ‘limit’ icon in the center screen will only display the legal truck speed not the posted speed for all other vehicles. We live in CA where multiple axle vehicles are limited to 55 mph. That is the maximum number it displays. I am thinking perhaps my Sprinter also has a software issue..
Does anyone else have this speed limit ‘error,?
Yes, I have similar confusing operation of the speed limit assist feature. It is obviously reading roadside signs. I have seen it change the display when entering a construction zone with temporary speed limit signs. But on limited access freeways it frequently shows lower than the speed limit on the sign just passed. I haven’t yet figured any pattern to the madness.
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Old 10-19-2019, 04:15 AM   #30
Coach06
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Default Re: 2019 chassis cruise control issue

Quote:
Originally Posted by Shadow5501 View Post
Yes, I have similar confusing operation of the speed limit assist feature. It is obviously reading roadside signs. I have seen it change the display when entering a construction zone with temporary speed limit signs. But on limited access freeways it frequently shows lower than the speed limit on the sign just passed. I haven’t yet figured any pattern to the madness.
Hey Shadow.. Two separate MB Sprinter dealers have informed me that our Vans are considered trucks - and the Sprinter will register the truck speed limit when on the freeway/highway. Hard to believe but there must be a vehicle registration code that requires that designation.
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