Batter or alternator??


Asked by Apr 24, 2017 at 10:22 PM about the 2006 Lexus GS 300 AWD

Question type: Maintenance & Repair

Suddenly and unexpectedly  just yesterday my
battery light lit up on my dash and today my car
wouldn't start. So I jumped it and my power
steering is not working at all plus my clock and my
navigation/radio is not getting any power at all and
all my warning lights on my dash are lit up. Does
anyone know what the problem could be??

6 Answers


Your elternator is bad you need to replace new one


That's correct if your serpentine belt is broken ...the elternator and power steering is not check the belt first .

Best Answer Mark helpful

I am not sure if I have the belt on the engine that drives the alternator. My car is a 2006 Lexus GS300 with 220,000miles. I have never changed the serpentine belt. I guess I will change the it and see if that resolves the problem (fingers crossed). The belt is due for a change anyhow, after all those miles. If it isn't the belt then what do you recommend I should do next?


Did You change the ECU? If you did and didn’t reprogram (See the new ECU or Computer Same Thing) are VIN Vehicle Identification Number Specific to the Computer,So when you put in a Computer from a Different Car the VIN Doesn’t Match So the Anti-Theft Kicks in and That acts Like the Battery is Dead ,Won’t Start,That is one of the main reprogram things the Dealer does for $2000,Copy Your VIN from the Windshield to the New Computer with a keyboard WOW.You Can have anyone who can use a couple Wrenches and Read Change this and Reset it,go to you donate whatever you feel it’s worth,tell them you want to replace and reprogram the ECU on your 06 Lexus GS and they will walk you or Whoever will Change it through it a heck of a lot cheaper then the Dealer,Never go to the Dealer unless you have a Free Recall or are under Warranty!

My battery on my 2006 Lexus GS 300 went dead. So, my father recharged it. I went around the block and it ran like normal. However, when I turned it off. The battery went dead again. So, my father recharged it again and I rode it around the block again. It had good speed and ran like it should. However, again , ithe battery died when we tried to crank it. This time, he put water in the battery and charged it. My car cranked but it would not go no faster than 10 - 20 miles per hour this time around. Then, I managed to get it to the dealership. They want to charge me $1212.00 to repair the ECTs throttle control, intake manifold gaskets are leaking now. Replace the bittle vacuum lines, spark plugs, engine air filter, irepair or replace the intake hoses that are dry rotted and cracked and repair the VVTI oil hose. Do you know if the price for this is a good price or am I being over charged for this work? Is all of this necessary to get my car back operational?


OK ..did you see any check engine light on your dash..if it does then go to autozone to check that for free ...because the dealership want replace all this part maybe it's not necessary ..and maybe not solve the problem. .so my advice scan the vehicle and tell me what you get...thank you...

Your Answer:

GS 300

Looking for a Used GS 300 in your area?

CarGurus has 2 nationwide GS 300 listings starting at $6,995.

Postal Code:

Lexus GS 300 Experts

  • #1
    Tom Demyan
  • #2
  • #3
View All

Related Models For Sale

Used Lexus GS 350
3 Great Deals out of 51 listings starting at $7,888
Used Lexus LS 460
18 listings starting at $13,800
Used Lexus ES 350
8 Great Deals out of 177 listings starting at $6,358
Used Lexus IS 250
11 Great Deals out of 216 listings starting at $5,449
Used Lexus LS 430
3 listings starting at $7,980
Used Lexus IS 300
3 Great Deals out of 80 listings starting at $2,690
Used Honda Accord
35 Great Deals out of 1,625 listings starting at $1,800
Used Toyota Camry
26 Great Deals out of 2,105 listings starting at $2,995
Used Lexus IS 350
7 Great Deals out of 85 listings starting at $7,995
Used Acura TL
11 Great Deals out of 276 listings starting at $2,900
Used Lexus GS 430
2 listings starting at $6,995
Used Lexus GS 450h
6 listings starting at $5,994
80 listings starting at $4,500
Used Lexus RX 350
41 Great Deals out of 580 listings starting at $6,995

Used Cars For Sale

2006 Lexus GS 300 AWD For Sale
1 listings starting at $6,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.