Charging not completing

MalcolmSu

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I have a new EQA (4 weeks old) and have yet to complete a charge at home. I plug it in and can watch it start successfully charging in the app. The max charge is set there to 90% (not sure why but that's not the issue).

After a while - sometimes a few minutes, sometimes much longer - the max charge setting changes by itself to 50%. Always 50% and I did not make the change.

If the charge is above 50% it obviously stops charging. The first time this happened I went to use the car after a charge expecting it to be 90%, which it wasn't. Every time since then the only way I can get a full charge is to sit and watch the app and when it changes to 50% change it back to 90% (or 100%). Sometimes I have to do this a handful of times to get a full charge but most times it's between 10-20 times.

I contacted MB support in the app the first time for help but we couldn't recreate the problem at the time so my case was closed.

Today I phoned support. After on hold for an age, and then speaking to a agent they then agreed to pass me to technical support but whilst on hold to them I got cut off so I gave up. They also took my mobile number "in case we get cut off and I can call you back". They haven't.

Has anyone else had this issue? I wondered if it might be related to the charge programs in the app. I'm not sure what purpose they serve but I had Standard, Home and Work. I use the Home one but I don't see any difference between the three.

Malcolm
 

malcolm E53 AMG

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It might be the variation in electricity demand where you live my son has an EQC and his home charger reduces the charge relative to local demand you really need to hook up to a public charger and see what happens
 
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MalcolmSu

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I struggle to see technically how it's possible to adjust the Max Charge setting based on electricity demand.
 

malcolm E53 AMG

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I’m not conversant with the technical detail but his comments to me were that if the supply drops below 7.2kWh the charger drops to 3.6kWh
 
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MalcolmSu

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OK. I hadn't spotted that before. My charger is fluctuating between 5.6kW and 6.8kW just now.
When it does drop then all that should happen is the length of charge time should extend - which it has. Earlier it was showing 100% charge achieved at 21.00 now it's showing 21.06.

As I'm typing the max charge setting has jumped to 50% again and charging stopped. :(
 

mioba

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Go to the dealer. Tell them you got cut off from support and no help. Leave the car there and get a loaner.
Frustrating
 
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MalcolmSu

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Don't worry as soon as I get a day when I'm not driving the thing I will be on their doorstep.

In the meantime I think I've found away around it by unlinking the car from the app.
 

mioba

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Ahhh could be a glitch in the app causing the problem. Crazy tech.
It will be the Chinese hacking your car making the batteries die so you buy new CN batteries.
 

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