infamous 12v issue

[TVL]

My 4s’ alarm started; car completely dead; no way to unlock it with the key fob
Drove it 3 hours ago, 25% left, plugged it in to charge
Called Porsche Assistance...
I’m afraid it’s the infamous 12v issue

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[chrisk]

My 4s’ alarm started; car completely dead; no way to unlock it with the key fob
Drove it 3 hours ago, 25% left, plugged it in to charge
Called Porsche Assistance...
I’m afraid it’s the infamous 12v issue

What alarm? Do you mean the Porsche mobile app notification that the car is stolen?
Did you use a charging profile with a timer or direct charge?

 

[TVL]

What alarm? Do you mean the Porsche mobile app notification that the car is stolen?
Did you use a charging profile with a timer or direct charge?

Car alarm started sounding and annoying my neighbours. Did that for a few minutes, then died completely
Used a charging profile, car should have started charging later tonight on night rate.

 

[TVL]

Porsche Assistent was very responsive, took them 20 minutes to get here. Just in time for me to found out how to open the car... using this doc: https://cdn2.hubspot.net/hubfs/2932510/2020_PorscheTaycan_DeadBatteryEntry_Tipsheet_V4.pdf

They kickstarted the 12v battery, and told me to take the car for a 30 minutes drive to charge it further

No solid explanation on what the root cause is. ‘Sometimes this happens... it’s the charger that drains the 12v battery...’

Will give my dealer a call tomorrow to insist on a detailed diagnosis

 

[TVL]

just noticed that there is a great write-up on how to recover from this issue:
https://www.taycanforum.com/forum/t...it-dies-because-of-the-12-volt-problem….2529/

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