2022 Mini SE issue with charging 500 miles / new

  • Thread starter Thread starter Rexsio
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beerhecht said:
I would suggest monitoring the line voltage. The car might step down the charging rate if the voltage is too high/low. Remember that the car is doing the AC to DC conversion.
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The Wallbox support team had the same idea and downloaded the logs from my unit. Line voltage going in is fine. I’ve also got a load management unit that will cut the power to the EV charger if the overall house load is approaching a certain capacity (eg hot summer evening with oven and AC on). My understanding is that unit is “all or nothing” though and couldn’t reduce the Kw from the normal 7.1 to 3.8 as is happening with me. It cuts out the EV circuit completely until household load drops back to a percentage of maximum.

The other thing I asked Wallbox was if the car was telling the unit to reduce the output. They said there’s no comms between car and power delivery device for L2 - only L3 DC fast charge mode. For L2 all the power is available and the car decides how much to take - either because the charge settings are reduced or as apparently in my case…the damn Mini is haunted….
 
What really drives me nuts is, even after getting a message like this, Mini insists there’s nothing wrong. Surely there must be a log of this event in the system somewhere if the car is telling me to get back to the dealer? Otherwise, what’s the point??
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Outagas said:
What really drives me nuts is, even after getting a message like this, Mini insists there’s nothing wrong. Surely there must be a log of this event in the system somewhere if the car is telling me to get back to the dealer? Otherwise, what’s the point??
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If you read my previous posts you see my very similar problems but you should go to public L2 charging station when I did car is showing no reduction when charging .That give me more headache bc after diagnosing a car dealer give my SE back saying 100% good to factory specifications.My 240 V. Outlet is 250V.that means I’m 8 kw. but mini SE is 7.4 kW .and no one can give me a answer if a car react that way bc is protecting car charging / electronics
 
Have you tried getting a Bluetooth obd adapter and downloading mi3? That might help you figure out whether it’s an issue with the battery or what.
 
I’ve tried Mi3 with Bluetooth OBD a year or so ago and it wouldn’t connect for some reason. Going to try it again.
 
Went back to the dealer today and had a meeting with the service manager. He’s agreed to arrange a troubleshooting session with himself, me and a tech to see if I can recreate the problem in a service bay. The stickler has always been that they say their L2 charger doesn’t trigger this reduction in charging so I want to see their setup and watch how they use it. There are only so many ways to charge the car obviously but I suspect they aren’t waiting long enough for the message to appear. At any rate being able to discuss in the moment with a tech vs read vague notes after the fact on the work order may provide additional opportunities for learning.
 
Outagas said:
Went back to the dealer today and had a meeting with the service manager. He’s agreed to arrange a troubleshooting session with himself, me and a tech to see if I can recreate the problem in a service bay. The stickler has always been that they say their L2 charger doesn’t trigger this reduction in charging so I want to see their setup and watch how they use it. There are only so many ways to charge the car obviously but I suspect they aren’t waiting long enough for the message to appear. At any rate being able to discuss in the moment with a tech vs read vague notes after the fact on the work order may provide additional opportunities for learning.
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I went through dealers their L2 hook up is 208 V .which give you 6.4 kW charging as public chargers 208 V.which is below SE 7.4kW. Capacity.Thats why SE on those L2 chargers never kick into reducing charging I’m assuming I check with voltmeter my outlet produce 250 V. -8.0 kW and reducing charging happens very often but no SE dealer want confirm that statement what I’m asking 3 of them already .
 
Very interesting and important piece of information about this mystery, thank you! I’ll take a tester to read the voltage at the dealer.
 
Rexsio said:
I went through dealers their L2 hook up is 208 V .which give you 6.4 kW charging as public chargers 208 V.which is below SE 7.4kW. Capacity.Thats why SE on those L2 chargers never kick into reducing charging I’m assuming I check with voltmeter my outlet produce 250 V. -8.0 kW and reducing charging happens very often but no SE dealer want confirm that statement what I’m asking 3 of them already .
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My L2 charger is connected to 240V and is good up to 9.6 kW The mini never draws more than 6.95 kW so I don’t think it’s the mini backing things off on you. Maybe your charger is seeing a spike and then limiting the charging rate as a result.
 
4HAVNFUN said:
My L2 charger is connected to 240V and is good up to 9.6 kW The mini never draws more than 6.95 kW so I don’t think it’s the mini backing things off on you. Maybe your charger is seeing a spike and then limiting the charging rate as a result.
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If you have 32 Amps charger than with your perfect voltage 240 V.your output is 7.68 Kw .and 40Amps. Charger is 9.6 kw and any L2 charger is not regulate output voltage from outlet what is there is going to the car and if you have charger when you are can control / set output is 40-32-16-8 amps .is different story. Here we are talking about SE which is going to reduce charging as 16 amps car is set to maximum 32 amps charging on a dashboard this a question why car is doing this .As I said before public or dealers chargers work on 208 voltage with 6.4 kW output and SE never triggered reduce charging only home charger act like that.My charger is dump charger without any additional settings but as I check voltage I read 250V.x32 amps from charger output is 8kW.which SE refiuse to charge on maximum charge .Car was check by 2 dealer they confirmed car is perfect to factory specifications
 
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So the question is - are L2 chargers at BMW and other public places here in Canada 208v like where you are (somewhere in Europe)?

I hope to find this out tomorrow. The service manager thinks they are 240 but maybe he’s just assuming.

Also - did your car do this from new? Mine was fine for two years then this problem started.
 
I’m in NY and delivery system of electricity is exactly the same in Canada and USA,commercial 208 V and houses 240 V.My SE 2022 January act like this from very first charge in my garage on L2 but the same charger charging for 6 years BMW I 3 never act that way .My charger I send to manufacture and they diagnose 100% good.Made in CA. Clipper Creek L2 240 V. 32 Amps.no adjustment or connection to WiFi .and my braker is 40 Ams. Never pups up .I can’t go any higher bc my house panel is only 100 Amps.I contacted utility company and I’m getting 250V.bc I’m close to transformer but this voltage is meeting US.standard-/+ 5% from ideal 240V. And they can’t help me and of the road!
 
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Ok good info thanks. Just ran out to look at a couple commercial L2 units at a local mall and other places. Unfortunately the data plates say 208v/240v so I guess they can be set up either way. I need them to read their panel to know for sure. What a pain in the azz this all is.
 
Outagas said:
Ok good info thanks. Just ran out to look at a couple commercial L2 units at a local mall and other places. Unfortunately the data plates say 208v/240v so I guess they can be set up either way. I need them to read their panel to know for sure. What a pain in the azz this all is.
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As you have in a house 120 V. To get to 240v. You connect to each leg 120v and you have 240v and ground for NEMA 14-50 as 240 V outlet and is 1 phase .In commercial application is 3 phase to get 208 V. 240 V. And More voltage like 277 V. for any different machinery different demand .None of L2 chargers for home are 3 phase only 1 phase .
 
Rexsio said:
As you have in a house 120 V. To get to 240v. You connect to each leg 120v and you have 240v and ground for NEMA 14-50 as 240 V outlet and is 1 phase .In commercial application is 3 phase to get 208 V. 240 V. And More voltage like 277 V. for any different machinery different demand .None of L2 chargers for home are 3 phase only 1 phase .
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Which in-house you can’t achieve 208 V. Without installing an inline transformer to lower voltage to desired voltage like208/220/230/240 which I have a plan to do it once I located right unit with knowledge of smart electrician bc one I ask with license have no idea what I try to do it
 
One other question…

If you stop and restart charging or unplug/plug in your Mini - does the charge kW become normal? (7.1 kW from 3.8?)
 
Outagas said:
One other question…

If you stop and restart charging or unplug/plug guin your Mini - does the charge kW become normal? (7.1 kW from 3.8?)
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Exactly what you asking is happening is your SE acting the same way?unplug J 1172 plug again full Maximum charging.but what is explanation? I have no way to measure kW charging rate but a time of charging is cut in half from min. To max.means charging is on max.about 30-32 Amps max. And 16 Amps on min./ reduced charging.
 
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