I recently had an issue where the passenger-side door of my Tesla Model Y would pop open on its own about once an hour. After a bit of research it turned out that the car going to sleep would cause this behavior.
I originally thought the issue was due to a recent Tesla firmware update but this turns out to have been unrelated. So I ended up reaching out to Hannshow and they responded with the following:
Getting to the module in question is a relatively big deal (to me) as it involves taking apart the door and removing the window. Something I *can* do but would take me quite a few hours and we are in the midst of an unusual cold spell where I was not eager to spend any great amount of time in my garage doing this kind of work.
I was also a bit skeptical at first as Hansshow did not provide any explanation or details, but I had a 2,500 mile road trip coming up so I had to get this resolved A.S.A.P. So I took my car to CarTunes, the “Southeast’s expert in mobile electronics and customization” (and they are) to implement the change. They graciously were able to squeeze me the next day in to effect the repair and did so for a very reasonable rate. Once implemented that issue was magically resolved.
So kudos to Hansshow for their timely and accurate fix, and kudos to CarTunes for implementing the fix quickly and for a reasonable cost.
I *did* have a workaround in case I was unable to to get the issue resolved in time, that is to have the car’s Sentry Mode active 24×7 and, as overkill, to set the car’s ASS (Actually Smart Summon) to be in Standby mode. Both of these would prevent the car from sleeping which is key. I originally tried just the ASS standby mode but found that, every once in a while, it would let the car briefly fall asleep in spite of it’s claim of ALWAYS being ready to go. It was just for a few minutes but that was enough for the door to pop open. This approach would have consumed just slightly less energy than using the Sentry Mode (.38% battery consumption per hour for ASS vs Sentry Mode’s .40% battery consumption per hour). But either approach would have consumed on the order of 10% of my car’s battery per day and then shut off once the battery had depleted to below 20% anyway. So… not the greatest workaround as I would have needed to keep an eye on the car to keep it charged above that 20% instead of just letting it sleep when I wasn’t using it and having it consume virtually zero power.