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NikB
Rank 2
April 30, 2024
Solved

Mercedes max. charge level discussion- Any workarounds?

  • April 30, 2024
  • 46 replies
  • 3595 views

I have read through some of the forum topics and it is well-documented that Mercedes and Indra/OVO has an as yet unresolved problem, that being the maximum charge level is re-set to 50% by software Gremlins.

I wanted to start a dedicated forum topic about this issue and keep it going until it is resolved, because this is not a minor inconvenience. It would be THE reason for me to not have ordered and signed a finance engagement for a Mercedes EV, or paid over £1000 to OVO for a charger. In my circumstances, charging at home is a key reason to have an EV. Without that, I would go back to a diesel tomorrow.

I will update the thread when Mercedes replies to me by email, now that I have been able to pinpoint the issue for them. So far (before I knew there was a big problem), they have replied quickly but with the generic “reinstall the Mercedes Me app - send fault logs - what phone are you using” etc etc etc.

So, I invite you to write your workarounds (if there are any), your communication with Mercedes and any other useful info on this topic to help other Mercedes EV owners live with this extremely irritating problem.

Best answer by Emmanuelle_OVO

Updated on 26/01/26 by Abby_OVO

Hey @NikB,

 

This was the last update I received from the team:

 

Its a known issue with Mercedes still being in the Beta testing phase unfortunately. They are still working on it.

 

In order to stop a charge on Mercedes vehicles, we set the in-vehicle max state of charge to 50% which then shows in the Mercedes vehicle and app. To start charging again, we change the in-vehicle max state of charge back above 50% to the desired level. Unfortunately we are seeing that the increase from 50% to 100% state of charge isn’t being applied reliably on the Mercedes app.


If plugging in when the vehicle is under 50% in the afternoon/evening, we’d advise a workaround of checking the Mercedes app before you go to bed and manually changing the maximum state of charge back up to 100%. This should ensure the vehicle is charged correctly by the ready by time. We appreciate this isn’t ideal, so we’ve got our developers working on a solution to ensure reliable charging in the future.

 

 

There may be some more advice on the above topics. 

 

To update all Forum Members who are part of the Mercedes / Beta Pilot:

 

This is still a pilot, and some issues - like the 50% total charge problem - may take time to resolve. As a result, the Charge Anytime team is unable to provide further updates at this time.

 

If the limitations you're experiencing outweigh the benefits of the Charge Anytime add-on, we recommend leaving the pilot for now while we work on improving the service.

 

We’re sorry for any frustration this may cause. Please keep an eye on the Forum for updates - we’ll share any new developments as soon as we have them.

 

You can exit the Mercedes Beta Pilot at any time by taking the following steps:

 

  • Open the OVO Charge Anytime app
  • Click on the "Account" tab in the bottom right
  • Click on the User icon in the top left
  • Click the "Delete account" link
  • Select a reason for leaving and click "Continue"
  • Your app account will now be deleted and there will be no further connection or interaction between your car and the OVO system
  • Note: You will still be credited for any smart charging that you have done up to this point

46 replies

Show previous replies
Blastoise186
Super User
Blastoise186Super User
Super User
January 29, 2025

I don’t have the app myself so you may need to look around a bit - but I know some of the data eventually hits MyOVO where you can also get to it.

IIRC = If I Recall/Remember Correctly

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Abby_OVO
Community Manager
Abby_OVO
Community Manager
January 29, 2025

Hey ​@Steve birkbeck 

 

Sorry to hear about this. I’m glad one of our volunteers has already stopped by with some really helpful advice on this, it’ll definitely be a good idea to get in touch with the team about this directly as we don’t have access to that kind of data here at the Forum. 

 

How to get in contact with the Charge Anytime team

  • Charge Anytime - 0330 175 9678 (Option 1 new customers/option 2 existing customers) 

  • ovocharge@ovo.com

 

Let us know how you get on.

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Steve birkbeck
Newcomer
January 30, 2025

I rang the helpline and spoke to a technician, who was very helpful.

She confirmed the advice that ChargeAnytime is not able to charge past 50% battery capacity, and that if I need further charge I should force it with “Start Urgent Charge”.

I tried this, but further problems…

ChargeAnytime app starts off with :Trying to start charging”, but after a while switches to “Your car is not charging Please use your car’s display or phone app if you need to make charging start”.

Not sure I have options here : Mercedes app has no control over the charging & easee app is approved and ready to charge

Any ideas what I could try to resolve this ?

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Newcomer
Steve birkbeck
Newcomer
February 18, 2025

“Start Urgent Charge” doesn't work.

This means that it is not possible to charge my Mercedes battery more than 50% in any way.

I’ve given up on Charge Anytime and deleted my account.

Ben_OVO
Community Manager
Ben_OVO
Community Manager
February 19, 2025

Hi ​@Steve birkbeck,

 

I’m sorry to hear you’re still experiencing issues, and I wanted to share with you a recent update:

 

To update all Forum Members who are part of the Mercedes / Beta Pilot:


This is still a pilot, and some issues - like the 50% total charge problem - may take time to resolve. As a result, the Charge Anytime team is unable to provide further updates at this time.

 

If the limitations you're experiencing outweigh the benefits of the Charge Anytime add-on, we recommend leaving the pilot for now while we work on improving the service.

 

We’re sorry for any frustration this may cause. Please keep an eye on the Forum for updates - we’ll share any new developments as soon as we have them.

 

You can exit the Mercedes Beta Pilot at any time by taking the following steps:

 
  • Open the OVO Charge Anytime app
  • Click on the "Account" tab in the bottom right
  • Click on the User icon in the top left
  • Click the "Delete account" link
  • Select a reason for leaving and click "Continue"
  • Your app account will now be deleted and there will be no further connection or interaction between your car and the OVO system
  • Note: You will still be credited for any smart charging that you have done up to this point

 

I’m sorry - I know this isn’t the news you’d want to hear. Hopefully things will be improved soon for Mercedes owners who’d like to use Charge Anytime.

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Steve birkbeck
Newcomer
February 21, 2025

Thanks I’ve done that.

The work around would be ok if the % was higher, but using just half of the battery is no good.

I recommend you bump it up to 80% rather than 50%.

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    OVO (S) Gas Limited is part of OVO Group Ltd