Search results

Yes - Not sure exactly how but something to do with software / firmware. Eventually Porsche technical told them what to re-update which solved the problem.

It might be worth getting Porsche to do a two day monitor of the 12 Volt to see if you have any phantom drain when the car is switched off over a period of two days. They did this on mine and had to raise a ticket with Porsche technical to solve the higher than should be drain I had (although...

I had this problem for a number of years but the 12 Volt problem was fixed recently with the 12 Volt switch firmware update. This has totally sorted it out for me - have you had that completed for your car Sonic ? If not then contact Porsche to get it done. They also fixed a phantom drain on...

I used to have to use a CTEK but since the latest 12 Volt Switch software / firmware update no longer need it as the main battery now keeps the 12 Volt battery topped up correctly as it always should have. Got back from three weeks away with no problems just leaving car switched off. Worth...

Wow - that explains exactly why I had a problem with my 12 Volt for the last two winters before having the 12 Volt switch update recently - great to know reason.

No - I didn’t ask.

I did - phoned them and explained that this winter I was getting the problem of low 12 Volt messages as I had in both the previous winters. They said a 12 Volt Switch firmware / software update was available and should sort the problem out. They kept the car over a weekend monitoring the 12 Volt...

I had this problem for a long time but the software update to the 12V battery management system and 12 Volt switch has finally sorted it. They also said I have a drain on the car when it is off and they have raised a ticket with Porsche to get a fix but say the latest 12 Volt software will keep...

Yes - that works for me.

Had car in for recent 12 Volt switch software update and to diagnose problem with low 12 Volt messages etc. Interestingly Porsche Tonbridge put the car 12 Volt on a weekend monitor and it came up with a higher drain on the battery than it should when car was off. They say that this is the...

So did I - not even an acknowledgement !

I don’t understand why the dealers don’t know that Porsche has not yet got a working solution to this problem - they seem to be just wasting their and our time rather than waiting for the solution.

Yes - the CTEC Lithium charger is not authorised by Porsche to charge or maintain the Taycan 12 Volt lithium charger. I have used one in the past to charge without any damage but Porsche say you do so at your own risk. My car is having the upgrade to the 12 Volt Switch firmware / software and...

Yes they updated mine to 3885 but no it did not solve the problems with Navigation getting stuck.

Not sure of Porsche service reference - they just said it was a new 12 Volt Switch firmware or software (can’t remember which) that has recently come out and should address my problem.

Although I have used the CTEC Lithium charger to top up when I get the 12 Volt low message I don’t leave it connected to maintain as Porsche have warned me that the use of the CTEC on the Taycan 12 Volt is not supported as the following maximum values must never be exceeded: Max. charging...

Not very well written - Charge to 50% then set general profile to 85 % - Really !

You are correct - I remember it needing to be turned exactly the opposite way to the expected way.

The manual key lock is very, very stiff. When doing for the same reason as you I found I had to turn it really, really hard. It is interesting that so many owners have no problem and yet there is a significant number of us that do get this problem - my local Porsche centre is adamant that it is...

No I have the 12V battery sensor recall for my 2023.