Where is the fuel pump located on a 1999 Lexus LS 400?

Fuse bank should be in a black box under the hood in the engine compartment, usually its close to the battery.

I belive it is Where the air pump cover is located the fuel pump relay should be located in that area. Right side(passenger) towards the fire wall.

The fuel pump is inside gas tank behind the back seat unscrew the only top that's there and it is inside the gas tank. You will have to remove your back seat to gain access to fuel pump. Fuel tank is located in trunk. No need to take fuel tank down. Click this link for full details and procedures:--- http://technoanswers.blogspot.com/2011/06/how-to-replace-fuel-pump-on-lexus-ls.html ----------- For fuel filter replacing, click this link:--- http://technoanswers.blogspot.com/2011/06/how-to-replace-fuel-filter-1994-lexus.html ----------- For timing belt and water pump removal and installation, click this link below:-- http://technoanswers.blogspot.com/2011/06/how-to-change-timing-belt-and-water.html ------------ For coolant flushing and filling, click the link below:-- http://technoanswers.blogspot.com/2011/06/how-to-drain-and-fill-coolant-on-lexus.html -------------- This all procedures should help.Thanks.Helpmech.

under the car in front of the rear wheel on driver's side

if your talking about thew gas gauge it is in the tank.

You will have to remove your back seat to gain access to fuel pump. Fuel tank is located in trunk. No need to take fuel tank down.

The fuel filter is located under the vehicle on the left side before the rear axle.

Hi.....
On your 91 Lexus ls 400.
If you remove the Rear passanger seat.
You will have axces to the fuel pump.
Remove the metal cover . Disconnect the wire harnes,
Disconnect the lines.
removing the nuts you will able to remove the fuel pump.

Ok.. I hope this help on your question.
Thank you for use fixya...

I was told there is no fuel filter

The fuel filter on the 99's are mounted right above the rear axle on the passengers side. Fuel tank on these are located in the trunk behind the back seat by the way...