Coding with the MG S5 API

[fredM17]

I use an integration in home Assistant based in this API

Hi, I did the same with Home Assistant for my Marvel R but got 12v battery heavy drain and stopped. I'll get an S5 soon. Any issues with battery so far?

 

[Jaime Branco]

Hi, I did the same with Home Assistant for my Marvel R but got 12v battery heavy drain and stopped. I'll get an S5 soon. Any issues with battery so far?

I have some drain but if you only wake up the car every hour when park like this the drain is low.

 

[stevedee]

Hi, I did the same with Home Assistant for my Marvel R but got 12v battery heavy drain and stopped. I'll get an S5 soon. Any issues with battery so far?

I've been pulling data from my S5 via the api every 3 mins for a few days. That seems to be considered a high rate by many people, but does not give me any battery problems, and it shouldn't, so long as the car is working properly.

See my notes for more info: MG S5 ev: using the API #2

Many api have rate limits, but I haven't bumped into one for the S5 so far.

 

[fredM17]

See my notes for more info: MG S5 ev: using the API #2

Thanks. Very interesting and far beyond car dealer "explanations" during the 5 car return to garage for a total of 17 weeks during the last 2 and half year... They told me that the Marvel didn't recharge the 12V battery when car is parked.
I hope I'll not experienced that again with the S5 but already baught a battery booster in case of problem.

I have some drain but if you only wake up the car every hour when park like this the drain is low.

Hi thanks. I haven't found this option panel. I'm using
SAIC MQTT Gateway (Python) Version: 0.9.8

 

[hmadsen]

Incidentally I was playing with turning on the AC before jumping into the car as we're summer here with 38°C today with HA, and it worked pity the AC turned off once opening the door but that's issues with how the car is set-up with. But not sure about pre-heating. That I need to wait some 4, 5 months to tell

I have this Home Assistant integration as well.

Wife and daughter loves the Ikea button i mounted on the wall in the kitchen.

When pressed it fires off the "Preheat car" so now they dont even have to go into the app to start heating "their" car, they just press the button on the wall.

Only caveat is, it does not work if MG servers are unresponsive, and sadly that happens far to often, but since the integration pretends to be "the app" it only happens when the app does not work either, so its no worse than trying to use the app.

Ours is the ZS EV, but works just fine.

On the ZS EV we dont get "color" but we do get "Modelyear 2021" for all 2.gen ZS EV, so even if the VIN says MY2023, the car still says 2021.

Oh the joys of owning a Chinese EV

 

[stevedee]

...They told me that the Marvel didn't recharge the 12V battery when car is parked.
...but already baught a battery booster in case of problem.

It troubles me that MG certified/approved service centres are happy to talk '75% Proof BS' to their customers.

Why is this? is it because they are stalling for time, or is it that the 'customer facing' person is just giving his unqualified opinion, or is it that they genuinely don't have a clue how these cars work?

I really hope the users on this forum that are due to have parts replaced (e.g. TCU) get a positive result.

In the longer term, I'm hoping service centres will acquire the knowledge & experience they need to be put their finger on these problems quickly, and get users back on the road.

As mentioned in my notes, if you use a battery charger on the AGM battery, please don't fully charge it.

I know nothing about Home Assistant, but you may be able to increase the sampling interval to (say) every 10mins, record the reported 12V battery voltage, and establish whether your Marvel is charging the 12V battery when parked & off & not charging the traction battery.