Weird sleep issue

[sophiehansen]

Hello,
For the past three months, my 2018 M3 has been experiencing issues with its sleep mode. It only goes into sleep mode from midnight to 5:59 AM, then wakes up and stays awake until the cycle repeats when I park it at the airport.

This problem doesn't occur when the car is at home or work; in those situations, it falls asleep as expected.

It's incredibly frustrating because when I leave the car at the airport, it can lose up to 5% of its battery each day. If I’m away for a week or more, this becomes unmanageable.

Does anyone have suggestions on how to resolve this?

 

[bwilson4web]

It's incredibly frustrating because when I leave the car at the airport, it can lose up to 5% of its battery each day. If I’m away for a week or more, this becomes unmanageable.

I've only used "Power Off" for maintenance but I'm wondering if it can be used at the airport?

It is a "catch 22" even if you pull the main battery safety lock. There remains a challenge of the 12 V battery exhaustion and whether or not the doors will even lock or unlock when you get back. You'd need the front emergency power technique to get back into the car and enable the full battery lock.

Speculation, practice first at your home in the driveway.

Bob Wilson