My 2001 lexus lx470 wont start re3placed battery and fuel pump not pumping fuel

4 Speed Automatic Transmission, 4WD.
part number - A343F

yes under rear seat ,may have to remove the back part of seat as well to get good access then under a cover

1. Release the fuel pressure .
2. Remove the rear seat ,rear door scuff plate ,step plate ,rear seat lock cover ,rear carpet and cover plate on floor panel for access to electrical connection for fuel pump .
Disconnect electrical connector from top of fuel pump .

From here you can remove the fuel pump unit .

maybe the engine coolant temperature sensor dont work properly , sometimes do not the check light come on

Two fuel pumps are in the fuel tank. The tanks dipps down on both sides of the drive shaft. the drive shapt has to be removed to get the tank out and it's best to remove all the gas from the tank before removeing the tank .. this work is very dangerouse and is best left to a professional madechaanic.

Try to replace the fuel filter and then check the spark plugs. Mke sure to clean the spark plugs and after you clean the spark plugs and still the same it wont start replace the spark plugs and check the distributor as well.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

For most Toyota vehicles, to be safe you should change the timing and accessory belts, associated belt tensioners, thermostat, water pump, coolant, plugs, fluids, and filters every 60,000 miles.

check your fuse box. you might have a blown fuse

Yes 9.8 volts is normal but why not look at the starter.

Lexus lx470 1999 Starter

Look at the "rear" of the engine where it joins the transmission. Follow the positive cable from the battery to it. Cog with the 'teeth' you see engages the flywheel to start the motor.

It looks similar to this.