Windshield wiper fuse box on Lexus IS 250 windshield wipers will not go off

The windshield wiper relay on a 2004 Ford F-550 is typically located in the fuse box under the hood. The fuse box is usually located near the front of the vehicle, on the driver's side. To find the windshield wiper relay, you will need to refer to your vehicle's owner's manual or a wiring diagram for the vehicle. The owner's manual should have a diagram of the fuse box that will show you the location of the windshield wiper relay. Alternatively, you can search online for a wiring diagram for your vehicle.

Once you have located the fuse box, you may need to remove a cover to access the fuses and relays. Look for a fuse or relay labeled "wiper" or "wiper relay" to find the windshield wiper relay. If you are having trouble finding the windshield wiper relay, you may want to consider consulting a mechanic or taking your vehicle to a dealership for assistance.

Do you know what a wiring diagram is ? A wiring diagram for your vehicles windshield wipers electrical circuit would show all components involved . You would need a wiring diagram for testing ,so you know which wires too test . It would show the fuse location - amperage etc.... Which of these is your vehicle - Notchback or hatchback or station wagon .

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Service Information
2008 Holden Viva ' Optra, Viva (VIN J) Service Manual ' Body Systems ' Wipers and Washers ' Schematic and Routing Diagrams ' Document ID: 1964803
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Wiper/Washer Schematics
Figure 1: Wiper System - Notchback
Figure 2: Wiper System hatchback and Station Wagon
Figure 3: Wiper System Hatchback and Station Wagon w/Intermittent
Figure 4: Wiper System Notchback w/Rain Sensor
Figure 5: Wiper System Hatchback and Station Wagon w/Rain Sensor
Figure 6: Wiper System Hatchback and Station Wagon w/Intermittent and Rain Sensor
© 2019 General Motors Corporation. All rights reserved.

The fuse would be marked WPR fuse # 9 25 amp. located in the IP fuse panel . IP - instrument panel fuse box . It's location is
Fuse Block - I/P
Behind the left side of the I/P access panel
Windshield Wiper System
The windshield wiper system consists of a wiper motor, a linkage, a wiper arm and a blade, and a wiper/washer switch. The windshield wiper circuit incorporates a self parking device which consists of a worm gear and a cam plate in order to keep the circuit engaged temporarily when the switch is turned off. The wiper system is driven by a permanent magnet-type motor. The windshield wiper motor is mounted on the dash panel and is directly connected to the windshield wiper linkage.
The windshield wiper motor has 2 speeds, LO and HI, and also has intermittent wiper capability. The wiper switch is an integral part of the wiper/washer switch. Windshield wiper operation is actuated through the lever on the right side of the steering column.

https://www.youtube.com/watch?v=MvXX3Xg3siM

There are two relay's in the under hood fuse / relay box . Wiper relay an wiper relay 2 . Maybe one is bad . also check fuse #14 25 amp. Wiper fuse.Plus the BCM - body control module has a hand in making the wipers work . Are you familiar with automotive electronic control modules ?
The Wiper/Washer System consists of the following components:
• Windshield wiper/washer switch
• Body control module (BCM)
• Wiper micro relay
• Wiper 2 relay
• Wiper diode
• Windshield wiper motor
• Windshield washer pump
• Windshield washer nozzles
• Windshield washer solvent container
• Windshield wiper arm and blade assemblies
• Windshield wiper transmission
• WIP/WASH 10A fuse
• WIPER 25A fuse

Wiper/Washer System Description
The body control module (BCM) controls wiper motor low speed operation. The washer pump and high speed operation are controlled directly by the wiper/washer switch. The windshield wiper/washer switch supplies voltage on the signal circuits to the BCM for windshield wiper/washer operation. When WASH, MIST, DELAY, LOW, or HIGH is detected, the BCM energizes the wiper micro relay by suppling voltage to the relay coil. This allows battery voltage from the WIPER fuse to flow through the relay switched input then through the contacts and out the relay switched output to the wiper 2 relay switch contacts. Since the wiper 2 relay switch contacts are normally closed to the low speed circuit of the windshield wiper motor, the motor will operate at low speed.

Do you have any speed !

Look in your fuse box inside the cab and see if the fuse has blown.

drivers side inner fender under the hood, look in the owners manual for the number and amps. some are marked under the lid itself

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_4c166ba81493f541

you're covered by the warranty. if dealer can't help, ask for factory rep

They slide off the the wiper arm like any standard wiper blade. Go to a store that sells wipers blades, instructions are on the back of the box. Do it your self...the dealer will charge you 40 bucks at least! (Lexus dealer)

check the fuse box under the hood as it will contain the relays for your wipers and taillights

the fuses are usually identified on the inside of the fuse box. on the door or cover

From your owners manual:

Fuse#11 30A , Wiper Run/Park
Relay, Wiper Hi/LO Relay, Windshield Wiper
Motor, Rear Washer Pump Relay

U will also need to check the relays if the fuse is ok, the relay, it is the underhood fuse box
Relay #202 — Front Wiper Run/Park Relay