Sorry to hear that! I really hope JLR can figure out what's wrong and get this fixed.

 

Does the battery need to charge up? I had it happen in the very beginning and since the we have gone on many longer trips and it has not happened since. I thought it had to do with the new battery… I have no clue though, I am just speculating.
thanks

 

A data point - I had my defender shut down in city traffic immediately after driving 3hrs on the highway. It's possible there's a faulty battery or a part of the battery system that isn't charging, and when the auto stop engages, there's not enough energy to restart it.

 

I have also had this stall at a red light happen two times in the past week. This is a 2021 P400 with auto start/stop. When the vehicle stops, it sometimes decides to completely turn itself off without warning. Perhaps related, when I put it in park and it auto shuts off, the vehicle also completely turns itself off. Bringing it into the dealer to check on it soon.

 

had it happen again today when trying to leave from a red light. it's getting really tiresome. each day i like this vehicle less and less.

 

I know its annoying, but it might be worth bringing the vehicle in to the dealer. My dealer "couldn't find anything wrong" but that doesn't mean another dealer wouldn't' get to the bottom of it. Seems like that's going to be the only way we get this solved, or raise enough attention that JLR engineers step in. For what it's worth, I haven't had this issue happen after I started manually turning off the auto stop/start each drive.

 

Add me to the 'stalled at a red light' list.

1 time with 43 miles on it while I was driving it home new from the dealership yesterday. 180 mile trip and it was otherwise flawless.

 

Following this one. I have had happen 3 times in 7000 miles. Just took in last week and they could find no codes or history of what happened. I think the pattern is that it only happens after a longer extended drive and then at stop light. I am waiting for the next time it happens and will go back to the dealer then.

 

I could be way off but i think stop/start doesn't turn on as much in the first few miles of a drive as the engine warms up and interior climate gets to its set point. That's how it was for me today.

If so, it makes sense that it's after driving for a bit.

 

Literally had the stall at a traffic light 20 min ago...2022 defender. Got it 3 weeks ago.