Sam CS 05

Gone for 2 weeks, return to find my TT not starting. Battery & alternator were both replaced last year. Nothing left on. Cayenne same nap time and no problems.
Normal ?

Macster

Could be. Depends upon usage car received for being parked for 2 weeks. If very infrequent and perhaps battery left to run down due to lack of use a couple of times even a new battery can be negatively affected.

Just to be sure when you get battery charged up again -- if it proves to be ok and not in need of replacing -- be sure no interior lights on and no other parasitic loads present.

If you're going to leave car parked a couple of weeks unused might be worthwhile being sure battery fully charged and even level a battery maintainer hooked up to keep battery in top form.

Sincerely,

Macster.

wross996tt

Actually this is quite normal...you must keep a maintainer on the battery...there are just too many opportunities for the battery to drain and Porsche cars need a lot to get them going.

Sam CS 05

Aha...so this event proves that Cayennes are no Porsches

Sam CS 05

The car is used as DD vehicle, 2 weeks seems like a short time for it to die but I may just use a battery maintainer next time around. As for parasitic drainage source, the only possibility could be its temperamental alarm system.
Thanks.
Sam

wross996tt

you said it...LOL

Sam CS 05

i think ltc has hacked into my RL account

Last930

Going dead in 2 weeks doesn't seem right - I have let mine sit longer than that on a bunch of occasions and had no issues starting it.

alex911s

weird this happens all the time in my old 997S.. never on the 996TT

and never on my previous Cayennes..lol

i used the Porsche maintainer on the 997S..

Sam CS 05

Update: jump started the car (thanks to my pepper) and found the rear spoiler in raised position !????
I'll check the battery soon. Something still feels not right to me...I have had many cars including a Boxster and never had a problem like this one.

GBG

This happened to me two years ago. My battery lost it's ability to hold a charge, so was always going dead after only a few days of non-use. (Day to day was ok, but dead after 3 days). Just replace the battery-- not very expensive-- and problem solved.

Sam CS 05

But the battery & alternator are both only a year old.

wross996tt

Probably nothing wrong with the alt...the problem is with batteries...if they do not stay fully charged, they can fail quickly (also look for a bad cell)...once they have gone, there is no reviving....this is why I suggest keeping them on a maintainer...all the time.

Land Jet

Also keep your car locked. After locking, the car will turn off all parasitic drainage, however, you may still need to use the maintainer.

fstede1

What is a "maintainer"? Thanks