I have Lexus ES 300 94yr I won't crank sometimes

Probably had a factory amp that has gone out

The thumbing noise is an out put if you hear it over the speakers.
So that means the problem is with a CD or cessette player that you must have that will not pop back to the raido mode

Are you saying the engine cranks but won't start, or the engine won't crank ?
If the engine does not crank, you would check for voltage at the starter, the neutral safety switch, and the key switch as well as the ground connections.

Try www.manualowl.com

Its cheaper to replace the whole axle.You can get these from www.rockauto.com from $40.00-$53.00 for your lexus.

The noise you hear is probably the belt slipping. Turn the A/C switch on and look at the compressor under the hood. the part of the pully on the front side of the belt should spin, stop periodically and then start spinning again. It's tough to tell from here but the odds are that the belt may need to be changed and the system charged with Freon. When the freon level gets too low , the system won't start up and cool the car.


Best wishes.

sounds like a worn wheel bearing. Does it get louder when u turn in one direction? If so, then its most likely a wheel bearing

it's your CV joints

check the brake pedal switch by connecting a test light to it and ground.

When the pedal depresses you might hear a click or see the button depress.

The test light should light or not light changing as you press and release the pedal.

Another way to do this is to change the brake pedal switch and see if it works.

I hope this helps.

95 es 300 crank but not start