My 991 is now sadly put away until the roads are salt free ....

Covered , sitting on flat stoppers and with a trickle charger attached ...

This is my first season with it and I’m wondering if my car will ever go to sleep after a period of inactivity similar to what my previous Porsche’s have done .

I was was under the impression that these do not and do not recall seeing anything in the owners manual about it .... Does anyone know ?


Thank you !

 

Do you have Enter & Drive?

I have E&D. My car never stops recognizing the key fob. After winter storage, the car instantly recognizes the fob, doors unlock, and I can fire the engine as normal.

I've been told after a few days the 991 enters a sleep mode to conserve parasitic power consumption.

But it's not like the days of old with prior Porsches, that after 5-7 days, the car would stop recognizing the fob, and require the blade to open the door, and require the car to be reawakened with a timely and precise ignition sequence. So, no, the 991 does not "sleep" like that.

Not sure what the 991 does WITHOUT E&D?

 

According to the connect app the car goes into "conservation mode". This is without E&D.

 

My car does not have Entry and Drive ...

 

Locked.

 

I figured .... my car stays unlocked in the garage ( multiple other security measures in place ) and this would explain why the battery seems to drop after sitting for a week or two since I’ve had it ( it’s used primarily as a weekend toy ) ....

Where Can I find the literature on this feature ?

 

I'm not sure if it's "publicized" - I think it's more one of those things you learn on the forums. My wife has a new xc90 and I didn't know (read on Volvo forum) the radio will stay on and kill the battery if you open the door after turning the car off. Like say you forget something and open the door to get it, the radio comes on and car wakes up - kills battery unless you lock it. Very annoying. Only learned it from forums

 

It is interesting to read the posts about winter tires and long term storage concerns. I live in CA and drive 365 days a year on max performance summer tires. I would say that my obscenely high state and local tax rates are to blame but that doesn’t explain NY and IL.

 

Fortunately, I haven't caught the hibernation disease. I keep it at bay by putting on the winter tire set, turn on the seat heater and drive it daily!

 

Mine goes into partial hibernation. I mount winter tires on it, but I don't drive it daily. In deep snow or other nasty conditions, I drive my GMC truck. My 991 has been in the garage without moving for about a week and a half. Hopefully I'll get some time behind the wheel in the next week or so.

 

 

+1!

 

So in order to conserve battery, you have to lock the car so it goes into sleep mode. Doesn't that drain the battery more since the alarm is armed? I've been keeping my cars unlock in the garage.

 

More power is consumed with an armed alarm, but it really doesn't matter anymore. Due to advances in power management, newer cars (like the 991) can go months without completely draining their batteries. Dead batteries these days are mainly faulty modules getting "stuck" on and faulty batteries. Also, if the battery has never been completely drained and rough roads/track g's haven't caused it to fail internally, you can anticipate up to 10 years of life out of them!

 

I've not seen much of any evidence to support this on Rennlist. Especially without the diligent use of a battery maintainer.