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2007 Lexus RX 350, I have changed my alternator, starter, starter relay, and got a new battery and still some mornings my car will not start. It will start 15 mornings in a row then all of a sudden

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  • Lexus Master
  • 11,753 Answers

Try putting the gear selector into neutral . If it starts then the park neutral safety switch could be bad . Plus it could be computer controlled , like some gm vehicles the ignition switch is a input to the PCM or the BCM and the control module energizes the starter relay . Rather then replace a bunch of parts you don't need ,take it to a qualified repair shop.

Posted on Aug 10, 2017

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Posted on Jan 02, 2017

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mosthated357
  • 91 Answers

SOURCE: dashboard light

For Lexus the ! symbol usually is low tire pressure that's all there's sensors in each wheel that report to the car that the pressure is low, also if your wondering how much air to put in the tires you can look by opening up the driver or sometimes the passenger side door and look along the door there's a label that will tell you each tires recommended pressure. Any other questions just ask and id be glad to help you folks, and if you don't mind if you can rate my answer if you get a chance it would be greatly appreciated..

Thanks,
Steve

Posted on Jan 03, 2009

  • 1 Answer

SOURCE: low tire pressure warning light stays on

I brought my RX350 to the dealer for this problem before. They told me to inflate my tires to 36psi for winter time although the recommended pressure is 30 psi

Posted on Jan 18, 2009

  • 582 Answers

SOURCE: The fuse box layout for a Lexus RX 350, 2007 model

THERE ARE TWO FUSE BOXES ON THE CAR ONE UNDER THE DASH AND ONE UNDER THE HOOD. SHOULD BE ON THE RIGHT SIDE OF ENGINE COMPARTMENT WITH A COVER HELD ON WITH SCREWS OR LATCHES. ON THE INSIDE OF THE LID ON BOTH BOXES THERE SHOULD BE DIAGRAM OF LOCATIONS FOR THE FUSES

Posted on Aug 27, 2009

Testimonial: "Did not know about the one under the dash, is there a better explanation of what fuse or relay is for which? A pdf diagram maybe?"

mecanica03
  • 902 Answers

SOURCE: Reset Maintenance light for 2008 lexus rx 350

to reset, push odo buttom hold until put key on w/o start engine several seconds

Posted on Jul 15, 2010

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My Lexus 2007 RX 350 cranks but why won't it start?


i need specifications.is it petrol or diesel? how often are you using it?are you hearing extra noise while starting than before?

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The most common cause of a non-starting car is the battery. It is either weak, (low voltage) dead, (zero voltage) or has bad connections. (corroded or loose) I will assume you have a fully charged battery with good connections. (both to battery and starter relay)
If you remove the starter switch lead (small wire) from the starter relay and apply +12v from the battery to its respective prong or lead on the relay, and your starter cranks, your starter switch is faulty. (not to be confused with your key switch). If you jump the two large wires together on the relay and it cranks, then the relay is faulty. If you jump the two large wires together and nothing happens, then starter is faulty, or wires to starter are loose or broken. Picture of starter switch prong on the relay is pictured. NOTE: sparks are to be expected, so don't be too scared. Pictured is a starter relay that is seperate of the starter, on models with starter and relay mounted together, its very similar.
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Dec 16, 2013 | Cars & Trucks

1 Answer

Could not start a car. Got a jump - car started. Drove home. Stopped car. Started OK. Next morning the same issue - car easily started with jump. Got new battery 2 days ago - car runs fine, but mechanic...


The problem is more than likely a dead cell in the battery, Each cell in a battery is normally 2.3 volts, they will go over but when rested will return to 2.3 volts, with 6 cells it is 13.8 volts, car starts. 5 good cell is 11.5 volts, almost enough to start, any less not a chance, the starter will just click, cold weather is worse. A new battery will solve the problem

Aug 22, 2013 | 2008 Lexus ES 350

1 Answer

New battery still won't start 2007 Lexus RX 350


Did Robert Garcia's advice work for you? I have the same problem

Jul 16, 2012 | 2007 Lexus RX 350 FWD

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07 lexus rx350 slow to start after sitting over night. Once it cranks it is back to normal.


If it turns over hard in the morning then either something is staying on and draining the battery or the battery is nearing the end of its life. Check things like the glovebox light, trunk light for staying on. Simply remove the bulbs and see if that helps. If not , you should pick up a new battery.

If it turns over good the problem would be either the cold start system or your fuel system is losing pressure overnight. This would require furthur diagnosis. Hope this helps.

Oct 04, 2011 | 2007 Lexus RX 350 FWD

2 Answers

My lexus E350 battery goes dead if car is not used for a week. Had the battery checked with dealer says it is OK


This has happened to me TWICE in the past 4 months. I had Lexus road side service come out both times to check the car out. Each time the battery was totally dead. The road side mechanic said that if the car is not driven at least 15 minutes nonstop a day, the battery runs dead as there are so many draws from the car on the battery. If you do alot of stop and start driving like I do, that isn't enough to recharge the cell of the battery, it must be non stop driving time. Recommend that I get a 1.5 tricky charge device an hook to battery at least one night a week to keep the battery charged. This is really frustrating with such a new car. I've spoken to other owners of other model luxury cars and no one has had this problem.

Sep 13, 2010 | 2007 Lexus ES 350

1 Answer

Random clicking noise when key is engaged but stops


The sound is a relay switching over when you insert the key and power the vehicles accesories. It is a normal sound, but whatever that relay powers may fail soon. It sounds like the small electromagnet inside won't hold the voltage, hence the clicking sound.

Aug 31, 2009 | 2007 Lexus RX 350 FWD

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