This Is My Second Sc300 And Both Have Suffered From This Problem Why Does The Battery Die After Not Using The Car For 2-4 Days ????????????? I've Searched And No Answers Just Suggestions Any Help Guys ?

 

Not sure about everyones SC, but mine (and my audio guys old SC) both had larger than normal drain while not running. He said it was probably normal for all SC's.
Would be curious what everyone else's SC drains while not running..

 

i'm thinking that since i have a valve cover and distributor leak oil got onto my alternator and makes it harder to recharge so maybe....any one test theory's?

 

Funny enough, my 1JZ swap made the drain farrrr slower... Maybe a bad ground somewhere?

I relocated the battery to the trunk because I couldn't fit 3" intercooler pipes so I ended up putting the largest, heaviest battery Sears sells in the trunk. No more dead battery problems

 

hmmm i noticed everybody with a swap doesn't have this problem i think its based on my theory.

 

I disconnect the battery everytime I leave her resting some days. It seems is a common problem.

 

Ive got a power drain in my 400 somewhere. Once I get it running properly im gonna bring it to a shop and have then check all the grounds and possibly have a grounding kit made for it

 

how would i install a cutoff?

 

same thing happening to my 400, its got a good battery but if it sits 3 or 4 days it is dead. I think the cold weather has a lot to do with it.

 

My car came with a weak battery so I replaced it. Just 2 weeks ago I had to replace it again cause it wouldn't start after the car sat over the weekend. I only had that battery a little over 2 years. Luckily it was still under warranty.

I checked for a power drain and couldn't find any. I've even got a higher amp alternator and upgraded the grounding wires. I'm not sure why but it does seem to be a fairly common thing with our cars for the battery to give out early.

 

could it be the alternator?

 

something is pulling charge when the car isnt running. maybe ur footwell light is staying on? i also have a 1j swap and dont have that problem...

 

It could be your alternator not charging good enough. That is a common problem for oil to leak from the distributor onto the alternator and ruin it. If there is oil leaking on it I would check that first.

 

also have this problem with my soarer. very frustrating. i cant help but to think that some lights are always on. ill investigate next time its been running for a bit.

 

Edited for bad information on my part, read GS4_fiend's post for the right way of doing it