12V battery dead

[Richardo]

Also seems daft that the car doesn't automatically ensure it gets kept charged up even if don't drive apparently..

Yes, combined with a 12v aux socket that remains live with the car switched off, and even after the car disconnects vital circuits due to low voltage!

Very surprised by the design, (and lack of warning in the manual, despite warnings about more minor battery considerations), but now we have seen it, we know for the future.

We were fortunate we caught it before fully flat, it could be a real headache if locked out too!

[Johnnyboycar]

Mine has gone down the same route. Dead after 3 months. Ive had nothing but faults since getting it four months ago. Dealer can’t find any faults.
Wishing I’d just gone down the Diesel route to be honest.
I’m going to charge it on the vehicle today and overnight and see how long it lasts after that before I get the dreaded battery warnings.
Seems VAG have gone right downhill.

[korchinks]

Enyaq 85 L&K - not happy

Just had this happen (xmas eve 2024) - car delivered on 16th December, I've driven it for around 65miles in total since then.

As I had planned to do a few Xmas visits through the day, I took the opportunity to get it charged to full overnight using 3pin plug 13a 240v charger, our 7kw wall charger delayed until mid Jan).

Went to go out, only to find the charger plug was stuck in the car, tried locking/unlocking several times, resetting the screen by holding power button, all unsuccessful, I didn't take much notice of the messages, I ended up using the emergency cord in the boot to release the charger.

At this point I'm ready to launch, only to find that the only drive I select is neutral and it's at that point I realised the 12v error message.

So the car is 8 days old, the AA can't fix it, an AA specialist VW tech is coming to the house on Xmas day, most likely to tell me it's a dealer only fix.

How can a 12v supply cause so many issues??

I'm stuck with a 3-pin plug charger for 3 more weeks, if the problem is that type of charging doesn't charge the 12v, does it charge the 12v from the EV batteries whilst driving? If not, it seems likely this will issue will happen again or l'll be forced to use a DC charger at the supermarket etc just to top up the 12v.

35years driving and this is the first car I've had that's problematic on delivery - dear Skoda, it sucks that, 4 years after it's release, such basic quality/design issues exist. This is such an inconvenience at what should be "the most wonderful time of the year" - The result is that I'm likely to avoid VAG cars in future and if anyone asks why, this will be the sequence of events I'll use to explain.

[korchinks]

Okay so in Xmas day the VAG specialist arrived, cleared all the faults created by trying to hard reset the system and at the same time boost charged the battery for just over two hours.

Thankfully, We got it going I did 2x 50mile trips within 24hrs which "self charges" the 12v some more - I'm now also in possession of a trickle charger which I'll use tomorrow to make sure it's fully charged.

If it discharges again after that it's back to dealer I go.

I was told the 12v doesn't charge from a 3pin 13amp/3kw charger, only 7kw upwards will top up the 12v whilst charging the HV battery.

Also as I received the car whilst on annual leave I'd only driven 2-3mile journeys at any time, which also contributed to a low 12v recharge rate "on the go".

I get my ohme wall charger mid January, so this should be a short term problem. I'm glad that I now have my own trickle charger and (from this experience) the knowledge to know it's better to have it, just in case the 12v issue re-occurs.

It's a deeply disappointing event, but the learning journey quite valuable and hopefully this also helps someone else unlucky enough to find themselves in a similar position at some point.

[MacDragon]

If it truly doesn't charge on standard socket charger, that seems quite poor design..

[CrowSysE243]

I was told the 12v doesn't charge from a 3pin 13amp/3kw charger, only 7kw upwards will top up the 12v whilst charging the HV battery.

I am running a test on my car, using a mode 2 "granny" charger set to 6 ampere max output (currently drawing 1.47 kW from the 13A socket). The test started with the 12 V battery at under 80% state of charge (SoC). It has increased to over 90% in under 30 minutes. The inverter started charging the 12 V battery from the HV supply as soon as the car charger was powered.

At least for my car (23 iV80 with software version 3.5 plus low level module updates) the statement that only 7 kW or greater power chargers will charge the 12 V battery as well as the HV battery is not true. As release notes or version description documents have not been provided with the software module updates it is not possible to determine whether this is a change that has been implimented since the car was built, however circumstantial evidence from the use of the mode 2 charger when away from home in August 2023, November 2023, February 2024, April 2024, May 2024 and August 2024 suggests that the behaviour has not changed.

I suspect that the low 12 V state of charge is indicative of a fault.

[Aragorn]

The car will run the DC-DC converter whenever HV is on. Any suggestion that it would not charge when X or Y is happening is nonsense.

If the HV system is powered up, IE charging, pre-heating, driving, the DC-DC is on and charging the battery.

If the battery is flat, charge it. Its really not that difficult a concept, its a car not a spaceship. I really do wonder about the skill level of an AA driver who thinks a flat battery is a "dealer-only" issue. You can even jump start it just like any other car...!

There seems to be a bunch of these cars with faulty 12v batteries. But the first step with any 12v issue is to put the battery on charge. If the issues persist after the battery is charged, the battery is probably broken.

[Steve666]

The car will run the DC-DC converter whenever HV is on. Any suggestion that it would not charge when X or Y is happening is nonsense.

If the HV system is powered up, IE charging, pre-heating, driving, the DC-DC is on and charging the battery.

If the battery is flat, charge it. Its really not that difficult a concept, its a car not a spaceship. I really do wonder about the skill level of an AA driver who thinks a flat battery is a "dealer-only" issue. You can even jump start it just like any other car...!

There seems to be a bunch of these cars with faulty 12v batteries. But the first step with any 12v issue is to put the battery on charge. If the issues persist after the battery is charged, the battery is probably broken.

Totally agree, I've not driven my Enyaq 85 Edition for a month, so knowing that was going to be the case I put the Enyaq 12 Volt battery on a CTEK Smart Charger, I did the same thing with my Skoda Superb 2.0 TDI, all batteries require monitoring and charging especially in cold weather.
What I would say is that my first EV, KIA ENiro 4+ had the very good "Utility Mode" which gave the 12 volt battery a 30 minute boost every 24 hours, it was indicated by a flashing green LED on top of the dashboard, something Skoda should adopt.
I also have a Honda CRF 250L Trail Bike, it is now 8 years old and on it's original 12 volt battery which again is also connected to a CTEK Smart Battery Charger.

[yebaws]

I had major 12V battery issues when we first got our enyaq. Crazy that you can have 80Kw of batteries charged up to 80% and there's no gear there to top up a 12V lead acid battery when it gets low and the car is not running. I guess converting the HV lithium battery power to 12V would need a big transformer. They maybe have a separate alternator to charge the 12V battery from the drive wheels when its running?

From the error messages / doors unlocking / windows opening etc with a low battery, you'd think that the car had some sort of virus.

For us, the low battery issue was caused by Octopus IOG integration waking up the car all night. My advice is don't use the car integration with Octopus, use the charger integration. We have a Zappi and it works perfectly.

As a saftey feature, the high voltage system is shut down when the 12v battery is disconnected / low. Disconnecting the 12V battery is the first thing we do in the fire service when we come across an EV / hybrid in an RTC. Incidentally, if you're ever in that situation, there's also a fuse with a yellow tag on it in the fuse relay at the side of the passenger glove box. Pull this out to disable the HV system.

Car all worked fine once the battery was topped up.

[fatman]

Enyaq 85 L&K - not happy

Just had this happen (xmas eve 2024) - car delivered on 16th December, I've driven it for around 65miles in total since then.

As I had planned to do a few Xmas visits through the day, I took the opportunity to get it charged to full overnight using 3pin plug 13a 240v charger, our 7kw wall charger delayed until mid Jan).

Went to go out, only to find the charger plug was stuck in the car, tried locking/unlocking several times, resetting the screen by holding power button, all unsuccessful, I didn't take much notice of the messages, I ended up using the emergency cord in the boot to release the charger.

At this point I'm ready to launch, only to find that the only drive I select is neutral and it's at that point I realised the 12v error message.

So the car is 8 days old, the AA can't fix it, an AA specialist VW tech is coming to the house on Xmas day, most likely to tell me it's a dealer only fix.

How can a 12v supply cause so many issues??

I'm stuck with a 3-pin plug charger for 3 more weeks, if the problem is that type of charging doesn't charge the 12v, does it charge the 12v from the EV batteries whilst driving? If not, it seems likely this will issue will happen again or l'll be forced to use a DC charger at the supermarket etc just to top up the 12v.

35years driving and this is the first car I've had that's problematic on delivery - dear Skoda, it sucks that, 4 years after it's release, such basic quality/design issues exist. This is such an inconvenience at what should be "the most wonderful time of the year" - The result is that I'm likely to avoid VAG cars in future and if anyone asks why, this will be the sequence of events I'll use to explain.

spot on ....same here cant even pre heat in cold ...never ever skoda again..