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2004 Lexus GX470 does not start occasionaly. Key turns but engine does NOT turn over. Dash lights come on, no start. New ECU installed. Also dies occasionaly while driving.

Does not start

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6ya6ya
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Posted on Jan 02, 2017

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  • 6 Answers

SOURCE: 2004 Ford explorer will not start

Sounds like connections or cables. They may appear to look good but if they are aftermarket terminal ends they get corrosion under the bolt down clamp that holds the wires in. If they are factory cables that are molded on to the ends of the wires the same thing can happen. The easiest and cheapest thing to try is to put aftermarket terminal ends on the cables. Make sure you wirebrush the ends of the cables after you strip them and tighten them evenly and securely. Also clean the battery side thoroughly. If this doesn't work check the starter relay. Its the first place the red cable bolts to after the battery. Check the connections and try putting a jumper wire between the battery positive cable and the small terminal marked with an "S". One of these solutions should take care of this.

Posted on Nov 26, 2008

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Molson02536
  • 3854 Answers

SOURCE: Engine will die

There is a Communication problem between the Transmission Control Module (TCM) and the Engine control module. That is the bad news and is why it's shutting down the engine. 
The good news is i believe there is a TSB recall on the 2004 - 2007 chevy aveo for the P0700 problem so it should be covered under warranty. 
Believe the TSB# 05-06-01-030D
Good luck and hope this helps and hope it's not a bad ECM. Check the wire harness to the ECM and TCM, look for broken wire or the harness it self gone apart. 

Posted on May 24, 2009

  • 1348 Answers

SOURCE: Engine won't start. Dash lights flash rapidly when key turned.

the battery says 12 volts but may be dropping to 4 or 5 under a load...i would suggest jumpstarting the car and see what happens.the battery should read in the high 12 volts and not less than 9.5 under cranking. the dash lights go out on your car when starting,and the alarm will go off ,and disable the ignition if the voltage is too low in cranking the car because the computer will shut it down and activate the anti theft.....check your battery posts are tight. best of luck

Posted on Jul 22, 2009

RonPark
  • 855 Answers

SOURCE: issue with dash lights dimming while driving,

If the battery and alternator tested fine. I would have the charging system rechecked when engine is hot and at high rpm's. This way the checks are being done as if you were driving and driving for a long time. Alternators can work fine when cold but weaken when hot or stop working. This problem is not rare but only is seen occassionly. Unless it was checked at an electrical shop the average shop doesn't run these tests for they don't see the problem often enough to automaticly run them at all times. Good luck and let me know how you make out.

Posted on Sep 21, 2009

  • 226 Answers

SOURCE: 2004 jeep wrangler unlimited wont start ,4.0l auto

Nuetral safty switch, Starter solenoid.
Do you have antitheft?
The ground for the starter relay may be computer controlled. Lee

Posted on Oct 04, 2009

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I have a 99 lexus es300. I have no check engine light but my transmission isn't shifting And reverse takes a second to engage and when it does it shift hard? What is the problem?


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When this happens to me ... I will wiggle/turn the steering wheel while trying to turn the ignition key ... and often, the steering wheel will unlock when you're able to turn the key

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Same Problem-My 2006 GX470 won't start -Key won't turn.


Had the same issue with my wife's 2005 Lexus GX470. The issue is that the shifter is not in park (even though it seems it is). The other issue is that without the key turned, you can not move the shifter to neutral. If you look closely at the gear shift, on the left above the P (Park Symbol) there is a small rectangular box that has a **** on one side. _862.jpgTake a small screwdriver and lift the plastic cover which will reveal a button. With your foot on the brake, push the button with one hand and now you will be able to move the shifter to neutral with the other hand. Now, put it back in park and you should now be able to turn your key and start your car. Put the little piece of plastic you removed over the button and go on your way.

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My Lexus RX330 will not start the battery has been replace and the lights on the dash come on but the engine does nothing. I turn the key and nothing like it's completely dead.


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2001 lexus ls430. Dead battery at airport. jumoers turned over starter fine but car would not start and no dashboard lights, fan, radio but driver and front passenger windows and doorlocks worked but not...


Sounds as though when your battery died the engine imobiIiser locked down.
YOU MAY HAVE TO HAVE THE CAR TOWED TO A LEXUS DEALER AND HAVE THE MASTER KEY AND OTHERS REPROGRAMMED TO THE IGNITION...BUT
If you have your wallet key as well , try taking all to the airport. HOLD the card to the dash beside the ignition for at least 20 seconds, then try turning the key several times. I haven`t done an LS but the failsafe when a remote fails is to hold the key beside the ignition for at least 20 seconds ....
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My understanding is that the lock routine re initialises the lock setstings when power is restored

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