electrical DOA

[motec]

Have 06 TT.

Cayenne soaking in yesterday's heat (108f) all day long, starts and runs fine. Move into the garage last night no dramas.

Attempt to start the car this afternoon, everything dead, no lights... absolutely nothing. By the way, when system is dead, you can't remove the ignition key.

Jumped it at the jump posts located near the drivers side hood pivot, engine starts and runs fine, lights, dash normal. restarts like there was never a problem ever.

My only conclusion is there must have been a relay malfunction. any thoughts?

PS. Weather has been very hot in Los Angeles last few days.

[Loren]

So the battery is four years old?

If so, I would suspect it.

[geoff]

I found out the Porsche "maintenance-free and sealed" batteries are neither. There is a sticker over the fill caps to "seal" the battery, and since you can't readily see the fill caps, it is maintenance free. Water in the battery still disappears. After 4 years the battery in my Carrera took a lot of water to get back to the proper level. I'm sure with the placement of the Cayenne battery under the seat nobody has ever checked the fluid level

[mudman2]

+ 1 on a dead battery, has all the hallmarks