Fadi23

my old battery died on my 2002 es300 ,i replaced it with a new one, put the battery in started the car drove around the block , i let the car sit for a couple of hours in the garage came back to start it but it would not start again .... is the alternator bad??? or is there another problem ...thanks

DixonPai

iTrader: (3)

it might be the alternator then, see if you can have someone check for you, I know AAA does it.

mdbrown

Put a multimeter on the battery. With the car idling you should measure at least 13.5 volts, off idle around 14.1 volts. If you are measuring less then that it's likely the alternator is not working.

BDSL

Boost start your engine. Then remove the jumper cable. Let the engine idle. If the alternator is dead, the engine will stall in a few minutes. If it doesn't stall, either your new battery is not holding charge or something is draining your battery.

Fadi23

i will thanks

Fadi23

thanks for replying back

FLYAIRWHIT

The battery shouldn't have depleted in a short trip around the block if the alternator was dead. If it is a new battery, it should be pretty strong. My guess would be something is draining the battery while it is parked, and if it is only a couple of hours, then it must be a pretty high load on the battery. I would hook up a multimeter, or do the test that another guy mentioned with the jumper cables. If you indeed have a good alternator, you should either draw test it, or take it to a dealer to have them try to figure it out. Some draws are easy to find, and others take awhile. The good news is, if it is a heavy draw, it shouldn't be too hard to find.