Not something silly like a temperature sensor reading wrong, then the car trying to warm the battery to protect it from a very low temperature. Based on a bad reading?
I'd get tesla to check the logs, if there's a log for the fan.
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Battery Drain Overnight.
- Thread starter NC2020
- Start date
I'd get tesla to check the logs, if there's a log for the fan.
So, I don't want to jinx this, but my car has slept soundly the past 2 nights, currently on 20 hours asleep. The only recent change I've had is the camera replacement which forced a software update. The thin blue line at the left of this image is when I did the update, so I still had the cycling after that. It appears that from Wednesday, before the charge, the car has been sleeping until I wake it. Temperatures have not changed drastically, still below 3 degrees all day and lower at night. Strange huh?
PR-UK
Member
Mine has to, I noticed the car downloaded 40mb a few days ago which isn't really big enough for a software update but much larger than the usual API traffic, since then the car has been awake for 15 mins each of the last two days. Perhaps minor update to a components firmware?
Glan gluaisne
Active Member
^^^ This
Tesla are really poor at communicating what they are doing with things like this. It's pretty obvious that sometimes things go awry with software updates, as owners often report similar issues, like this increase in battery drain that seems to be caused by the car staying awake for much longer than it used to. There was also the major flaw with the chargers being non-compliant with IEC 61851, that meant that externally timed charging didn't work. That fault existed from the time the car was released until around June last year, but was never acknowledged by Tesla, even after they seem to fix it.
It's great that these things seem to get fixed, but it would inspire more confidence in both the car and in Tesla if they were to just tell owners what they've done. All this secrecy around anything to do with software updates, and all the theories and reverse engineering it inspires, does nothing to build confidence that they actually know what they are doing. It gives the impression that software development and testing is run by a bunch of schoolkids, more focussed on playing games than getting things to work reliably as they should.
PR-UK
Member
I expect the argument will be that if Tesla ran a change log with all the issues that are patched people will wave them around saying "Look at all the issues with Teslas! You don't see the Polestar 2/Nissan Leaf/Audi eTron with lists like this!" Until all manufacturers agree to it, none of them will voluntarily do it.
Yachtsman
Member
2
I know this is not the same thing, but interesting all the same.
Back in the 60s a friend of the family were lucky enough to afford a Rolls Royce (can't recall the model) and were Egypt I think when a half shaft broke & the care only a few months old.
Apparently RR flew a couple of engineers & a new shaft out to him & got him back on the road in about 24 hours. He was so impressed with the service that when he returned home he wrote to one of the national newspapers telling them the story.
However when contacted for confirmation RR denied it saying our half shafts don't break!
On a similar vein BT used to repair private circuits but having said there was no fault!
Yachtsman
Member
I was a young boy at the time & recall it being a half shaft but couldn't be 100%.
I've seen nearly the same. Since the early hours of 03/02 my car has been sleeping like a little toddler. Before that it was awake for 5 hours at a time but now it goes to sleep within 15 min (apart from just now after I came back from a drive). I keep my fingers crossed that something has changed and it is now sleeping better.
Back to not sleeping. Car was up for 9 hours last night! Before that it was shown as offline fir 6 hours. What is that about?
Now 13 days later (I was trying for 14 but had to go out today) car is at 68% - so it’s lost 4% over 13 days in temperatures ranging around 0. Other than a quick check with the Tesla app on day 7 it’s been left alone.
Only small issue is that it refused to wake up this morning
Glan gluaisne
Active Member
Mine hasn't changed, the car is still staying on for one to two hours a day and wasting more energy than it used to. Clearly Tesla changed something during one of the updates a few weeks ago to cause this change in behaviour, as until the change it would only turn on for maybe 10 to 15 minutes a day with the car sat, not being used:
Same here - seems very, very strange we are seeing almost the same behaviour, including the (false hope!!) improvements we saw for a couple of days. The more we see the more it points to Tesla messing about remotely with things...
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