Content by emmrecs in December, 2025

But the percentage to which the car should be charged is/can be set in the iSmart app or the car itself! The ev.energy app doesn't need to know this figure, the car "controls" how much it takes. The ev.energy app controls when it gives. In my previous MG5 PFL (so iSmart app not available)...

Thanks! That seems to be confirmed by the reading this morning (ambient temperature very close to 0) of 12.3.

What @Ian Key said! They do, as Ian points out.

It is! You'll find all the gory details in this thread:MGS5 12V battery dead

Interesting! As someone who has needed to use my Battery Booster pack four times in the last two weeks to get the car to "start" (and who also has a Rolec charger, the ev.energy app and received the same "logged in from another device" message on the MG app) I was beginning to wonder whether...

As someone who has needed to use his Battery Booster four times in the last two weeks, I think it is a price worth paying! As for not remembering to keep it fully charged, surely the answer is to "recharge" it after each use or after a given number of uses, perhaps 2 or 3? I have this one...

Warranty terms is irrelevant here, sorry! If you are able to have the update done it in no way affects your warranty! As @kevin ellard said, the "Tesla Update", if it can be applied to your car (if it is not a PFL SR) is a software update. I had it successfully applied to my MGS PFL LR by...

Yes, I have! Very long story, short: I have now experienced four times the failure of the 12v on my car, leading to requirement for use of the Mechanical Key and my Battery Booster. (Local dealer has had the car in for diagnostic investigation - 2 days - and could find no problem but have...

Putting the waypoint in to what? The Electroverse app, Google Maps, Waze? I tend to use Zapmap for finding the location of chargers along my route then the Electroverse app to see which are accessible via that app. But, I, like others who've posted here, will always try to find Tesla Open...

I think the point is that you have to enable the Custom Pilot button (each time you drive the car) if you have chosen settings which are NOT the car's defaults and have saved them to that button. By definition "custom" surely means "non-default" so, essentially, personalised and "my choice" of...

Did you actually mean enable the custom pilot?

That may not be wholly true!! I've commented elsewhere that the ev.energy app, which communicates with and controls my Rolec charger, also shows the battery percentage of my MG S5, so some degree of communication car>charger or app is certainly happening for me.

I no longer have my MG5 but I don't think you can disable it, sorry. Just in case you don't know, it can be triggered by the simple act of the user pressing and holding the unlock button on the key fob. Put another way, if that button is pressed because the fob is "under pressure" for anything...

@itsbigmal Your info says you have an HS PHEV but you mention an S5? So, have you recently changed car? (Just curious!!! 🫢 )

To be absolutely correct, the S5 begins its boot sequence when you sit on the driver's seat; it only goes to full "Ready" mode, i.e. is driveable, when you press the brake pedal.

It does, but only when in Ready mode, i.e., ready to drive or actually being driven. Those of us affected by the "dead 12V battery" problem are finding it is happening when the car has not been in Ready mode for a period of time, often quite short.

Yes, in my experience you won't be charged! Although the amounts may be listed as "pending" for some days they will, eventually, disappear.

I think it is rather more that your bank will remove the pre-authorisation amounts when they realise that the owner(s) of the rapid charger(s) are not proceeding with the debit. That has certainly been my experience anyway!

In my early days of having a Rolec charger installed (actually before I got my first EV) several times the charger cut out, not because of an under-voltage but rather the reverse, an over-voltage (as high as 258 if I remember correctly). That level caused the PEN Protection to operate...

Done!

Ditto for me!

@MG Clive Since the OP has an MG5, rather than an MGS5, should this thread be moved??

@dx4100 Thanks again, and understood, again! Unfortunately, although my wife has an ICE car there's no room to park it in front of mine without also blocking access for my neighbours; we have a shared main drive, with my section of it just long enough to park the S5 in front of my garage door...

Agreed and understood! Have to make about a 80 - 90 mile journey later today so will have plenty of opportunity to fully recharge the 12V battery. And the booster pack worked brilliantly! Now about to phone my local MG garage!

Unfortunately, not so for me! I didn't use the car yesterday, but checked several times during the day that it was still accessible (i.e., could be unlocked and started), no problem. Checked this morning, dead again! Thankfully, as previously reported, I now have the booster pack accessible...

Ditto here!

Not seen the freeze problem so far, but I do use Android Auto, not Car Play. As for the reboot, have you tried pressing and holding (for about 10 seconds) the Home button (on the fascia, not the screen)?

I have this one. Never yet needed to use it but, as noted in post #24 in this thread, it is now stored in the front of the cabin and so ready to use! I can't remember how much I paid for it but it was certainly less than the price listed on that Amazon page! EDITED: to correct the link!

The "dead car" scenario has happened to me this morning! I suspect it is a 12v battery problem since car would not unlock. Mechanical key allowed access but no response to sitting on the driver's seat, so AA called and on their way. I now very much realise the reason for advice I've read here...

Re: MGS5 and (some) access to its API. Somewhat to my surprise I recently discovered that the ev.energy app which controls my Rolec Charger actually receives at least basic data also from my S5, even when the car is not plugged into the charger. I've just checked the app again and it reports...

Prior to owning my (now "retired") MG5 PFL I owned a Diesel MG6 which used Naviextras maps etc. Only the first update released by NNG was "free", all subsequent ones had to be purchased, at a cost of anything up to £120! Android Auto could not be used with the 6 so, perhaps very foolishly, I...

I'm not sure your question is directly relevant to this thread, but... In my early days with my charger, in my case by Rolec, I experienced the same issue: over-voltage causing the charger to shut down. The only solution is to insist your DNO comes and checks it; in my case they monitored it...

That should occur only if the car is plugged into a charger, I think. If it is happening for you without your car being connected to a charger this is something you need to point out to your dealer. I've also heard these "relay" sounds but usually for only a few minutes immediately after the...

Ditto here with that very annoying message but, at least at the moment, I'm not seeing any parasitic 12v drain so the issues may not be related.

1. I find the DAB radio to not be "unacceptable" overall! Yes, there can be real problems caused by the radio switching between DAB and FM when the signal for the former drops out. 2. Have you tried activating the 360 camera when moving forward slowly, as you would when parking? On mine...

I've had mine just over 2 weeks; still "finding my way around it" (settings, menus etc.) but so far, I'm delighted with it. I previously owned an MG5 PFL and this is really a whole step up.

I have returned to UW (Utility Warehouse) and from tomorrow will be on their EV Tariff 00:00 to 05:00: 6.889p per kWh 05:00 to 00:00; 28.983p per kWh Standing Charge: 48.454p per day All prices include the 5% Energy VAT. Just waiting now for TE to refund the over-payments made after every...

Where were those prices from? Are they the "official" MG Service Plan figures which start on this page? I've just taken one out for my S5, 5 years, a total of just over £1145.

My solution to this "problem": turn off the setting for Auto High Beam! I experienced the same issue with my MG5 PFL and the "solution" was the same.

Oh dear! I really do need to check my Car Scanner app more closely! Thank you for helping this old man to "see clearly"!

@Golea9 Welcome to the MGEV Community Forums! No need to apologise for being a newbie!! We were all in that situation once. I can't move your post and I don't think you can either. But I've tagged two of the Forum moderators who can move the whole thread.

@Alb @Rolfe ?Move this post to MG4 forum?

@Alb Somewhat OT but can you say which app you're using to obtain that OBD2 data? I've tried Car Scanner Pro and, so far, not seen anything like that level of info! I know the choice of Profile in the app is important but there doesn't seem to be one specifically for the S5 at the moment...