Laps

It appears that the battery in my '05 Carrera S is going dead. The car struggles to start so I assume this is the first thing to check. I have read the other threads about the wire harness, but think that I will start with the battery since that is easy. Anyway my question is does anyone know what batteries are a direct replacement other than the stock one? I have tried to find a replacement on Interstate's web site, Optima's website, Odyssey's web site, etc, but no one seems to make a replacment for a 05 Carrera S.

Any advice is appreicated.

928FIXER

Go with the harness first.Problem is that its not charging the battery.

Stephenkng

Should that be under warrenty?

Liva

i am having the exact same problem with my '05 carrera...been slow starting last few months, yesterday after work went to start it...light all came on, car wouldnt start...jumped it ran for an hour or so put it in the garage...this morning went to start it...nothing...may be battery, may not

carlo$

Gentlemen, check your alternators.

click: http://www.cardomain.com/ride/2034953/11

nkhalidi

997s are all too new to take issues like this into your own hands; I'd say let roadside tow the car to your dealer and let them diagnose the problem.

FWIW, my first battery refused to hold a charge after about 12 months and 2k miles. Dealer installed a new one, and it's holding strong after 14 months and 2200 miles.

KeninBlaine

2200 miles in 14 months? What's the point in having a car like that if you don't drive it?

MUSSBERGER

Must be the weather

nyca

the car must have an alternator lamp, its pretty easy to assess whether an alternator is functioning - either 13.5V+ can be measured across the battery while the engine is running, or it can't. The circuit to detect a non functional alternator and illuminate the warning lamp, is trivial. If you have no such warning light, its the battery - unless you have some exotic problem like that poster who had a weak hot side connection to his starter.

fskof

You can take the battery to Battery Plus and have them do a free load test on it. If the battery will hold a load then you have a charging issue. Why have the dealer sell you a new battery if its still good!

Stephenkng

Take it in and let the dealer check on the electical system. Even if the battery is dead, I believe if you have more than 7,500 mile/year, it should still be under warrenty.

nkhalidi

The 997 has rougly 4700 now. I have a daily driver street car, so I really only drive the 997 to, at, and from the track. That said, I'm looking forward to selling my street car and putting the 997 back to exclusive street use; the 997 is too nice to drive so rarely.

gpjli2

Put a battery tender on any car that is not used regularly.

Laps

Carlo thanks for the alternator test info, I will give it a try.

I stopped by my dealer yesterday and spoke with the service manager who told me that it is not covered unless the car has been driven 6k miles a year, which I am just under.

I also purchased a trickle charger from the parts counter and hooked it up last night. I will see if that helps.

jhbrennan

He's correct about the 6k miles/year...but don't you think a Porsche service manager would have a difficult time making a statment like that knowing the impact it could have on customer relations - boggles my mind.