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Octavia iV Estate - flat 12v battery

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On 06/10/2021 at 17:58, brelmondo said:

 

Having very similar issues with my Octavia VRS IV, which I took ownership of from Trust Skoda Stourbridge at the end of July.

 

Had an amber warning light on the dash due to 'Vehicle Lighting' and 'Adaptive Frontlight System' at the beginning of September. Which meant I was driving with the head and tail lights on permanently for almost three weeks. When I was finally able to get the car in at the dealer (due to lack of curtesy car availability at Trust Stourbridge) they swapped out lighting control switch with a doner vehicle, the warning lights cleared. Swapped back with my original switch, still no warning lights. 👍 A software update was also completed during the same visit. Dealer has ordered a new light control switch in any case, currently awaiting delivery.

 

This past Friday the car was connected to the 3pin HV charging cable after getting back from work, HV charge at roughly 30%. I use the 'Departure Planner' within the MySkoda app to schedule overnight charging. Leaving the car at home, I went out for the evening. On my return, at roughly 23:45, I could hear that the radiator cooling fan was spinning! The car was locked, the HV charging indicator was not illuminated, nothing displayed on the dashboard. Unlocked the car, fan still audibly spinning. Turned on the ignition, turned off the ignition, fan audibly spinning. Switched power off at the socket supplying HV charging cable, fan stopped a few seconds later?!?

 

The car remained parked up at home during Saturday whist I went out. On my return I had a visit from the neighbor to let me know my car alarm had gone off a number of times during the afternoon.  Unlocked the car, switched on ignition. The dashboard displayed numerous error messages and warning lights. Exited the car, pressed 'lock' on the drivers door handle, nothing happened. Pressed the lock button on the key fob, nothing happened. Back in the car, ignition button pressed, nothing happened. The 12 volt battery was completely dead. 

 

Visit from Skoda assist on Sunday morning, connected a 12 volt charger and shortly after the car was back to life. Hooked up to diagnostics and the results displayed a number of warnings and errors. I was told that the errors pointed to an issue with charging of the HV battery. But the engineer was not HV certified and therefore nothing further he could do, other than pass on diagnostics outcome to a dealer and recommend I get the car booked in ASAP.

 

The car is now with Trust Skoda Wolverhampton. I'm told a replacement vehicle control module will be fitted later this week. 🤞

I had the exact same problem - my alarm was going off during the night and my neighbour told me that the fan was running when the car was charging from the wall point.  The next morning the car was completely dead. Roadside came out and diagnosed flat 12v battery, and found three pages of error messages in the fault

memory. They arranged with the local dealer for the vehicle to go in for the big software update. Since it’s been back I’ve had two “front assist unavailable” errors, and today the infotainment system turned off on the motorway without warning. 

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  • Hello all, I've read all the posts in this topic and found some wrong information.   I'll try to explain how the system works in short, if anyone has some questions, I will kindly answer the

  • Weirdly after going through the same process in January and having been assured that ny 12 volt battery was fine, I got a low battery warning this morning. Now I have to try and get Skoda to replace t

  • Breezy_Pete
    Breezy_Pete

    13.1V is a very low charging voltage for a 12V lead acid battery, 13.8 or more is usually applied, for even trickle-charging, I think? In other words, it will only recharge very slowly at that voltage

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I collected my VRS iV  from the dealership earlier in the week, after a new control module was fitted. Thankfully no errors, warnings or flat batteries to report of since.

 

Keeping my fingers crossed this has resolved my issues.

  • 2 weeks later...

My octavia IV estate is 2 months old and tonight my alarm was going off in a very half hearted way. Got up and went out and tried to unlock and then relock the door.Unlocking stopped alarm but couldnt relock it. Got in car and tried to switch on and dash flashed weakly then went completely dead . Now car completely dead.

I have mainly driven it on petrol as havnt sorted out home charger yet and it was last fully charged about 2 weeks ago. If this is how things are going to be going forwards this purchase was a big mistake:((

  • Author
3 hours ago, Liz43 said:

If this is how things are going to be going forwards this purchase was a big mistake:((

A number of us feel like that. My opinion is that these cars are not fully ready for sale yet, but in the meantime we owners are beta-testing them for Skoda. Do I take it that you can't get your car near enough to a domestic 3-pin socket to charge it? If so, how did you charge it 2 weeks ago? Like others here mine gets charged several times a week and then I drive in Hybrid mode and S-drive. So far I have found that this keeps the car lively and braking regeneration in S-drive is very impressive - just a lift off the accelerator, rather than full braking, shows the HV battery charging.

 

However, I still don't fully trust the car. Latest problem was reported on the dash was "headlight range fault" and the headlights were constantly on whilst driving. Turns out there was nothing wrong with the range settings, but the 3-button light switch had gone U/S and needed replacing. That having been done, now - at switch-on and switch-off - I get a pinging warning that the first oil change service is due. That's nonsense as the car is only 8 months old and is not due that service until next March. Looks like I will have to live with that irritation until then when I hope the dealer can re-set it - unless anyone on here can tell me how to do it?

 

I recently bought a security camera for the garage so at least I can check that the light on the driver's door is flashing, indicating that the car is still alive.

 

 

  • 1 month later...

Having the exact same problems with my Octavia Combi iV. Flat 12V battery several times in the first month after delivery, February 2021. Dealership replaced the steering wheel as that seemed to produce amber lighted warnings on the virtual dash (e.g Parking brake not available, front assist warnings, etcetera).

 

That seemed to have helped. Had no more issues with the battery. Until today. 12v battery was flat again. The car is now at the dealership again.

 

Now, I do suspect the steeringwheel heating. That option was setup to start depending on the outside temperature. It is getting colder now, so heating starts when I start the car and I've noticed these strange warnings started coming back again. 

Do you also have steeringwheel heating?

 

I also have the issue of the backlights turning randomly when parked. So has my neighbour with his Octavia Combi iV. Not sure if this is linked to the flat battery issue as I saw this several times and had no issue with the 12V battery after that.

 

I hope the issue can be solved soon as the car is now very unreliable to me. Fingers crossed.

 

 

Interesting to read that a number of people have had 12v battery issues. I have a vRS iV hatch from September 21 and noticed the rear red side lights switching on and off randomly, often when plugged in and charging. The front lights didn’t come on. One morning went to start the car and couldn’t unlock with either fobs. Called out Skoda Assist who jump started the car due to flat battery. The HV battery gets charged pretty much every day and was at 100%. When I reviewed security cam footage found that the rear lights had come on and gone off a number of times during the night and on other nights. At 7 that morning the cam showed that all hazard lights started flashing this time and after 20 seconds the headlights started flashing as well lasting for 6 minutes presumably until the battery died. No alarm sounded or alert in the App. Took it to local Skoda dealer and after checking stated that there had been a technical bulletin issued for this ‘fault’ and added my car to it. Waiting for a fix to be released. I’ve started leaving it plugged in charging overnight now. 
I’ve also had the Infotainment system switch itself off once and a bunch of rear alerts (traffic, camera, rear park, manoeuvre assist, etc) also showed. Managed to reset Info system by holding on/off button for 10s as per manual and this cleared all fault warnings as well. Odd. 

Hi! I don't think charging the car or not makes a difference. My 12V battery went flat in both situations.

1 hour ago, TheVerge said:

Hi! I don't think charging the car or not makes a difference. My 12V battery went flat in both situations.

Will keep post updated

  • 2 weeks later...
On 06/10/2021 at 17:58, brelmondo said:

 

Having very similar issues with my Octavia VRS IV, which I took ownership of from Trust Skoda Stourbridge at the end of July.

 

Had an amber warning light on the dash due to 'Vehicle Lighting' and 'Adaptive Frontlight System' at the beginning of September. Which meant I was driving with the head and tail lights on permanently for almost three weeks. When I was finally able to get the car in at the dealer (due to lack of curtesy car availability at Trust Stourbridge) they swapped out lighting control switch with a doner vehicle, the warning lights cleared. Swapped back with my original switch, still no warning lights. 👍 A software update was also completed during the same visit. Dealer has ordered a new light control switch in any case, currently awaiting delivery.

 

This past Friday the car was connected to the 3pin HV charging cable after getting back from work, HV charge at roughly 30%. I use the 'Departure Planner' within the MySkoda app to schedule overnight charging. Leaving the car at home, I went out for the evening. On my return, at roughly 23:45, I could hear that the radiator cooling fan was spinning! The car was locked, the HV charging indicator was not illuminated, nothing displayed on the dashboard. Unlocked the car, fan still audibly spinning. Turned on the ignition, turned off the ignition, fan audibly spinning. Switched power off at the socket supplying HV charging cable, fan stopped a few seconds later?!?

 

The car remained parked up at home during Saturday whist I went out. On my return I had a visit from the neighbor to let me know my car alarm had gone off a number of times during the afternoon.  Unlocked the car, switched on ignition. The dashboard displayed numerous error messages and warning lights. Exited the car, pressed 'lock' on the drivers door handle, nothing happened. Pressed the lock button on the key fob, nothing happened. Back in the car, ignition button pressed, nothing happened. The 12 volt battery was completely dead. 

 

Visit from Skoda assist on Sunday morning, connected a 12 volt charger and shortly after the car was back to life. Hooked up to diagnostics and the results displayed a number of warnings and errors. I was told that the errors pointed to an issue with charging of the HV battery. But the engineer was not HV certified and therefore nothing further he could do, other than pass on diagnostics outcome to a dealer and recommend I get the car booked in ASAP.

 

The car is now with Trust Skoda Wolverhampton. I'm told a replacement vehicle control module will be fitted later this week. 🤞

I have the exact same problem with the fan running when the HV battery is charging, which runs down the 12v battery. My local Skoda garage have reported this to Skoda Technical who have replied saying they are not aware of any such issue. Is there any more information that you could give me so they can tie my case to yours? 

@SkipperEye  Welcome to the forum.

 

A clue to when they lie is that their lips move. 

 Ask to see the communication they received from Skoda CZ. 

3-monkeys-620x2401-620x240.jpg.0597dcccb1b603ee629f930dd02f3a1f.jpg.24a37f9163e0ba1cfd6b6fd298e8e592.jpg

Skoda had an issue on the MkII Octavia back in 2012 with faulty brake light switches resulting in the brake lights illuminating during the night and flattening the battery. 10 years later not much has changed I see 😂

I have a voltmeter permanently in the 12 volt socket in the boot. Today the resting voltage was 11.8 volts, but after a 20-mile drive in hybrid mode (and a very satisfying 88mpg) it was 12.2 volts. If I plug in the main battery charger, the voltage increases to 13.1 volts. In case anyone thinks this is low, a very good post from VAGProf dated 29th July in this thread explained it. 'The reason why there is only 13.1 or .2V  is because the 12V battery is monitored by the gateway, it knows the charging state, so if it is above 80%, ther is no need to charge it, purely wasted energy to keep the system at 14V all the time. This is why the converter only supplies 13.2V to the system to just prevent the battery from discharging.'  So a correctly functioning iV should never suffer a flat battery.

VW / Skoda have managed to have BEV's lumbered with Flat batteries. 

https://briskoda.net/forums/topic/499985-dead-12v-battery

Vorsprung Durch Technik = Let the paying public do more R&D and be inconvenienced rather than sort things before launch.

The 12 volt battery was flat this morning, which I discovered when I tried to unlock the car. Skoda Assist (AA) came out. The resting voltage was 4-1, so something had flattened the battery overnight. I can't imagine what it was, unless the heater came on overnight. I checked the 12 volt battery yesterday evening and it was 12.1 volts. The dealer can't lend me a loan car until January 24th, so Skoda Assist will arrange for a hire car tomorrow, to be delivered to the dealer. Normally it's two days only, but if the fault cannot be cleared, then the hire period will be extended. The AA man did some tests - the battery is fine, so for now I have a trickle charger under the bonnet to keep it topped up ready for tomorrow. Under the fuse box cover is the +ve terminal and the -ve terminal is nearby on the bulkhead. I asked whether the car could be relayed to the dealer, but because it can be driven, it's not possible. The 12 volt battery is in the boot next to the 400 volt battery and it was awkward to remove the nuts securing its cover. A tip: don't use the puncture repair gunk as it usually means the tyre fitter won't try to repair it, so always call out Skoda Assist as they carry a 'get you home' spare. Also, practice using the emegency key: it's difficult  to get the cover off on the passenger door handle, so have a practice so when it's need you can be in quickly.

2 days only is not the terms of your Manufacturers Warranty. 

So the stuff that comes out of some of  SkodaUK CS, Dealership Staff's mouths or AA employees is just rubbish. 

Never get landed with a duff car over the festive period.  No Dealership staff, or Skoda employees would.

 

As to gunk.

If you need to use it, just get the tyre fitter to take the tyre off the rim and let you go away with it for half an hour and you clean off the gunk.

If the tyre is a repairable one the gunk never stopped it from being repaired, it is just the fitters or fitting centre policy that they will not clean them. 

(For a £10 note in the hipper it is amazing how the policy can change some places.)

Edited by roottoot

I had my Octavia IV VRS delivered just before Christmas, and twice now I have been looking at the Skoda app on my phone after parking the car up for the night. Twice the app has shown me the car was unlocked, with a door or window open.

 

Both times neither a door or window was open, I did notice just now that the main instrument screen was on but with no graphics showing, but I could see it was slightly back lit.

 

The app was showing the passenger was open, so I opened it and closed it again, and locked the car. The instrument cluster was now showing the dials, and I waited a few minutes incase it was a timing thing for them to shut down, but they didnt

 

I went round and opened each door including the boot and closed them all again, and locked and held the lock button like you do on a gloabl window close and it has locked properly.

 

I wonder if this is a problem that could cause the 12v battery to drain due to the main instrument screen being 'On' all night?

 

Might be something to look out for if you are having 12v battery problems?

 

Thanks for the comments. My mention of the heater coming on is a red herring as the electric heating is supplied by the 400 volt battery, However, I've lost confidence with the car: I won't go anywhere for an overnight stop in case it happens again and I'll leave it connected  to the main charger every night. I'm not sure what to do now: both Skoda Finance and Skoda UK gave me some compensation when I said I'd accept the car, so is rejection now out of the question, despite a major fault having occurred?

Further to my previous comments KESSY doesn't work and neither does the main charge cable charge the 12v battery. I used the trickle charger to take the resting voltage up to 12.4v, but as soon as I switch on the main charger the battery voltage drops to 12.2v.

Finally got my car back from the dealership, after about 3 weeks.

 

When I took it there, they gathered all data from the car and sent it to the distributor here in the Netherlands.

I am not an expert and I am not sure whether I use the correct jargon, but it was advised to replace the "major control unit".

That seems to be some sort of gateway handling all data through the entire car.

 

They couldn't get this new unit working. There were issues programming it. They finally decided to get another new control unit.

That one worked flawless immediately. It appears that the first replacement unit was already defective.

 

At that point there was a new issue revealed. The control unit for the 12V battery reported issues.

They have repleaced that part and there were no more issues reported by the car.

Now, they suspect that the 12V battery control unit has always been defective and causing my problems.

 

Also, it appears that there is a software fix available for the rear lights turning on randomly when parked.

According to the mechanic that fix was applied to my car when they programmed my major control unit.

 

Due to the lockdown situation over here, I have not driven my car much.

I guess we just have to wait and see if the issue with the flat 12V battery is finally solved now.

  • 3 weeks later...

Our Octy was in the dealer for a week to investigate the reason for the 12v battery going flat. It was claimed that the power steering control unit remained live causing the problem, so this was fixed. Two software updates were applied but Skoda Connect still doesn't work. As I wanted the car back, I said that I could manage without it. This is their final chance to bring the car up to the expected standard, so if any other problems occur, I'll be rejecting the car.

  • 2 weeks later...

My car is just over 6 months old and among the many many electrical issues it has had, 3 times the starter battery has gone flat, each time it was parked on a Friday and put on charge and when we came to move it the car on Sunday it was totally dead and required the AA to restart it by jump starting & disconnecting and reconnecting the 12v  battery. its now had 2 trips to the skoda garage, it went in yesterday and after asking me about it they rang back today to say if the car is left plugged in after being charged then it will turn systems off after so long and need jump starting or battery disconnecting and reconnecting, they said skoda were trying to fix a software update for this but it wasn't available yet. (update 1.60?)  not sure if this is BS as surely there would be dead skoda's all over the place, its like driving a pre production vehicle and telling them what the faults are for them to try and fix them.

Our Octy was back last week as in my post above. Yesterday, after two days in the garage, KESSY didn't work, the battery was 11.5v and when I started the car a 'low battery warning' appeared. After a seven mile journey in hybrid mode the voltage was 12.1v and KESSY worked. I've informed the dealer and  am waiting for their response.

1 minute ago, Jim2015 said:

Our Octy was back last week as in my post above. Yesterday, after two days in the garage, KESSY didn't work, the battery was 11.5v and when I started the car a 'low battery warning' appeared. After a seven mile journey in hybrid mode the voltage was 12.1v and KESSY worked. I've informed the dealer and  am waiting for their response.

did you leave it plugged in for the 2 days? the garage have said to me to unplug it now after its charged.

I’ve not posted on this topic for a while but had one previous instance of a flat 12V battery and being locked out despite the Hybrid battery being fully charged (and unplugged). I have since always left the main charging cable plugged in, sometimes for days, with no further problems. I also had many instances of rear red side lights coming on and going off, both with charging cable connected and also not connected. I’ve since sold that car and a week ago picked up my new 22MY vRS iV estate. No issues at all with software, batteries or lights but very early days. Fingers crossed. 

On all 3 occasions its gone flat its had a full hybrid battery. its been left for much longer periods when unplugged and been fine. will have to see if it does it again while unplugged after being charged.

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