Question about 2000 Lexus RX 300
I have a Lexus rx300 that appeared to have a low/dead battery. I jump started the car normally and while driving home noticed that all the lights (dome, headlights, panels, etc) were flickering while the engine was running. Also the gears were shifting roughly, when getting home I turned off the engine and tried to restart but no power (starter, lights, horn) were all dead. I replaced the battery with a new one but noticed that I was not drawing a spark when putting the negative terminal on, and again no power to anything in the car. Tried jump starting again and the car started right up but again all lights were flickering. tired reinstalling the new battery with no sucess like before.
If I have a bad connection (loose wire, blown fuse, etc) why would the car start when jumped? If the battery is new, why would I not have any power connectivity for horn, interior lights. A quick stop at the Lexus dealer suggests a alternator problem but that still does not answer why no spark on the new battery.
Not a dummy around engines but all these new engines rely on elecrtonics as much as mechanical equipment. All ideas welcome, thanks
It is a bad connection some where, and jumping is overpowering it, when jumping do any of the cables get hot?
Try bypassing the cables using jumper cables.
Connect the black cable from the NEG Post to the engine block.
Connect the red cable from the POS Post to the point in which it connects (Starter or Power Point).
This should tell you quickly whether or not it is a cable.
If the cables check out, next step would to test the Charging, voltage should be 13.5 to 14.5 volts with engine running.
If this check out, then you need to check the major fuses, usually in the power distrubution box. Check also the connection on the power buss for the power box.
Posted on May 08, 2009
The alternator is charged by the battery and provides the supply to the lights, horn, panels, starter, etc. So, if a alternator blows then a person face these kind of issues. Check for the alternator by pulling the spark plug wires one by one of the coil pack and look if it sparks when u start. It takes a second person and dont do it too long, these sparks might wanna find its way fastest to other metal.
No spark means a bad alternator. And regarding the sparks on new battery, it can happen if the wire you are using is cut or loose, Check with a new wire.
Please do accept this solution and revert for further assistance.
Posted on May 08, 2009
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Posted on Jan 02, 2017
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