Strange heating issue

[Zwerius]

My i3 (2019; 111,000 km) with heatpump had no problems with heating so far.
This morning everything was working fine. Happy about that, since the temperatures are around freezingpoint overhere.
Around 11:00 hour this morning I updated my BMW app.
When I drove away this afternoon, I noticed that the heater didn't work anymore. (fan was working, but obviously the heatpump didn't work.

Since I didn't change any settings I suspected the update might have something to do with it. Although this would be very strange if true.
I stopped the car at my destination (for about 1 hour).
After leaving again, the heating performed as well as it always did.

Could this have anything to do with updating the BMW-app? Although previous updates never gaave me problems.
Or, if not, what could it be?

 

[mojo]

IMO it is very very unlikely to have been caused by an app update. The app only has very simple links to the car, and it's hard to think of anything that could cause the car itself to behave differently (though there are exceptions, such as the Octopus app cockup in the UK).

Probably the best thing to do is to check the car for fault codes. There are several possible causes - for example at cold temperatures the heat pump and cabin heater are both used together, and the latter has been known to go intermittent before failing altogether. But others have reported a fault in the cable that connects the cabin heater module to other control modules on the car, and it's quite possible that this type of fault could be intermittent too.

 

[Zwerius]

Ok. How can I check for fault codes?

 

[mojo]

Bimmerlink, for example.

 

[tob1as]

IMO it is very very unlikely to have been caused by an app update. The app only has very simple links to the car, and it's hard to think of anything that could cause the car itself to behave differently (though there are exceptions, such as the Octopus app cockup in the UK).

Probably the best thing to do is to check the car for fault codes. There are several possible causes - for example at cold temperatures the heat pump and cabin heater are both used together, and the latter has been known to go intermittent before failing altogether. But others have reported a fault in the cable that connects the cabin heater module to other control modules on the car, and it's quite possible that this type of fault could be intermittent too.

If it was really cold out, it may also be that the heat pump was working on very low output for cabin heat? I live in a fairly cold climate where night time temperatures get down into the teens below zero (Celsius) and if I don't preheat the car before leaving in the morning, it will take a long time to warm up noticeably.