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Start / Stop , Shudder & Cough

mike69440

Well-known member
1,301
723
113
Buick Ownership
2018 TourX Essence
Anyone else have this happen? Usually during a hard stop or cold weather, Start stop tries to shut off, motor shudders, won't shut off, stumbles , or eventually dies. So far, it starts right up on green light.
 

mike69440

Well-known member
1,301
723
113
Buick Ownership
2018 TourX Essence
No

I'll wait to it becoming chronic. Seems to occur when weather is cold. When near 0 Deg. F, Auto start stop is disabled.
 

Rhetoric

SUPPORTING MEMBER
898
644
93
MPLS
Buick Ownership
Red Needle TourX
Cold weather state here... no issues. I turned off Auto Climate Control so my heated seats stay on longer. ASS still seems to engage at temps around 0F if the car is fully warmed up.
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mike69440

Well-known member
1,301
723
113
Buick Ownership
2018 TourX Essence
I've had that happen a few times in the colder weather but never enough for it to not start. I run the Trifecta tune that disables the autostop
IT HAS BEEN IN THE 20 AND START STOP WORKS FINE.

I WONDER IF THE TEMP SENSOR IS RIGHT ON THE TIPPING POINT OF DIABLING START STOP WHEN THAT HAPPENS.
 
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