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Assistance Systems Error - Speed Limit Display (warning message)

dbsb3233

Macan Base
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Fixed with a visit to the dealer. They had to reset something. reset and realign gps or something.
If that's really why is started working again. It tends to just start working again on it's own within a few days, so it's hard to say for sure whether it's something the dealer did or it just came back on it's own.
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MatC21

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If that's really why is started working again. It tends to just start working again on it's own within a few days, so it's hard to say for sure whether it's something the dealer did or it just came back on it's own.
I am quite sure it was the resets/updates of the dealer. After this fix my speed alert chime is also different (even though I already had WSJ0 before).
 

No_Wonk

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I have "Assistance Systems Limited" error but it doesn't mention speed limit. It went away magically after I got it back from the dealer and they did nothing.
 

Cogs79

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Hi, the speed limit warning happened to me for the past 4 days (in Montreal. Canada). I suspect it was a dirty sensor or GPS temporary issue as it went away, only to be replaced by the Heart icon sensor issue. I will check if the sensors are dirty next time I drive.
 

dbsb3233

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This started happening off and on again the last few days on our drive back from Reno to Denver. Sometimes it was partial (the little speed sign icon comes on), other times ACC would stop working completely. Same as happened before.

It always came back on it's own within 2-15 minutes of driving, once immediately upon hitting a harsh pothole in the road. Makes me wonder if it might be the same problem the Mach-E has - a weak cable connection. That's a known problem in many Mach-Es (like the one I had), where a jarring bump would sometimes make a coaxial connector lose contact, and another bump would often restore the connection.

Next time it happened I purposely aimed for a pothole, but it came back before I found one. That was the last time it happened.
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