I’m trying to figure out if this is a known issue or if anyone else has experienced something similar.

2023 Discovery Sport, ~45k miles, still under warranty. Over the past year, I’ve had intermittent electrical issues that all seem to trace back to auto start-stop, especially in cold weather.

Symptoms:

– Auto start-stop engages at a stop (stoplight, stop sign, etc)

– On restart, vehicle throws a gearbox fault and locks up

– Requires turning the car off and back on

– Immediately after restart, I’ve also seen a charging system fault

– Happens most often after cold soak (~35°F), short drive (10–15 min), then stop

– Clears on restart and drives normally afterward

Dealer has been unable to replicate so far. Battery was replaced previously for “negative battery,” but the fault has returned.

This is becoming a safety concern since it’s happened in traffic. Curious if anyone has seen:

– Start-stop causing voltage instability

– Alternator/BMS issues in cold weather

– Known Discovery Sport electrical faults like this