hey club lexus i own a 1998 gs 300 with 135xxx one day while i was driving i get a battery light on my dashboard then i went to get my battery checked by auto zone they said battery is bad so i bought the new battery 2 days later i get back the light then i went to get my alternater checked and they said altinater is bad so i get a another alternater installed but light is not going away i don't know what to do next thanks in advanced please help

 

checked all your fuses? fusable links? relays? short in the wiring system? bad battery terminals?

 

I believe it is an alternator going bad and listen to idler pulley make any noise... I work at Lexus dealership as tech and I've heard this problem before...

 

The light normally means you have a draw on the system instead of a charge. Even though you replaced it is not totally uncommon for the new alternator on to be bunk too.. who did the work> It may be charging, just not at the 13.5-14 volts required.
If you own a multimeter. Start the car and put a load on the battery (put your lights on, radio..ect) then pop the hood. Put the red on the positive lead on your battery, black on the black. You should be in the 13-14 volt range.

 

+1 alternator

 

thanks for replying i had my mechanic to put another alternator for me and check it for me and said its working better then what i had before but he didn't figure out the problem that why is light is still on and then he checked couple think and said its could be a computer ? i just checked all my fusees and all of them looking good i don't know what to check next ?