Gentlemen,

I need your expertise advise on my current vehicle status. To give you a basic understanding of what's happening. When I turn the key ignition on, the radio, A/C lights will come on. It 'seems' there is not enough power to kick the starter on or something else is happening.

It's obvious that the 1st thing I'd want to check is the battery, which has been replaced. At the same time i replaced the starter as well. Well, when I replaced both the car started and worked for a few weeks. The same thing started happening, car wouldn't turn over. I took the starter off and took it back to Advance Auto Parts where they tested it, and replaced it. Even though AAP replaced the starter they claimed the one i brought in checked fine.

So, once I installed the new starter, the car turned on. It then worked for a few weeks and just a couple of days ago i go back outside. Turn the ignition and car wont start again.

The car has not thrown any error codes, nor shown any lags of anything when it was running. One thing i must admit is, even though starters were replaced. The car never turned on as strong as it did before. It always showed a bit of a lag, before starting.

The scion has 150k miles. What do you Gurus suggest i should try.

1.Replacing Alternator? (Battery hasn't shown any drainage what so ever)
2.Replacing Battery terminals? (It seemed as old battery acid 'might' have stiffen the terminals)