HomeWiper and Washer > SwitchesStandard Ignition WP640 Windshield Wiper Switch
Part #: WP640

Standard Ignition WP640 Windshield Wiper Switch

⚙️ 28 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Lexus, GS F, GS350, IS350, RC F, RC300, RC350, GS200t, IS200t, RC200t, and IS250
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Standard Ignition Wiper Switch WP640

The Standard Ignition WP640 wiper switch is designed for precise control of windshield wipers on select Lexus models. Engineered for direct attachment and featuring a durable black plastic finish, this new wiper switch offers reliable operation for your Lexus GS, IS, and RC series vehicles.

  • Direct attachment method for secure installation
  • Black plastic finish with rectangular female connector
  • 3 connectors with 2 connector cavities and 22 blade and pin terminals
  • Supports 3 wiper delay settings and 4 wiper speed settings
  • Compatible with Lexus GS200t, GS350, GS F, IS200t, IS250, IS350, RC200t, RC300, RC350, and RC F

Detailed Product Description

The Standard Ignition WP640 wiper switch is a new replacement part designed specifically for various Lexus models including the GS200t, GS350, GS F, IS200t, IS250, IS350, RC200t, RC300, RC350, and RC F. This switch features a direct attachment method ensuring a secure fit and easy installation. Its black plastic finish provides durability and resistance to wear. The switch includes a female rectangular connector with three connectors and two cavities, equipped with 22 blade and pin terminals for reliable electrical connections.

With 3 wiper delay settings and 4 wiper speed settings, the WP640 allows for customizable windshield wiper operation to suit different weather conditions. This switch does not include cruise control, fog light, or turn signal functions, focusing solely on wiper control for streamlined functionality.

Common Applications and Issues Addressed

  • Replacement for faulty or unresponsive wiper switch in Lexus GS and IS series
  • Restores proper wiper speed and delay control for improved visibility
  • Fixes intermittent or non-functioning windshield wiper operation
  • Resolves electrical connection issues related to worn or damaged terminals
  • Upgrades worn switches to new OEM-quality components

Installation Notes and Tips

  • Ensure vehicle ignition is off before beginning installation
  • Disconnect the battery to prevent electrical shorts during replacement
  • Remove the old wiper switch carefully to avoid damaging connectors
  • Align the rectangular female connector properly for secure attachment
  • Verify all 22 blade and pin terminals are fully seated before reassembly

Quality Assurance and Warranty

The Standard Ignition WP640 wiper switch is a new, OEM-quality replacement part manufactured to meet or exceed original equipment specifications. It undergoes rigorous quality control to ensure reliable performance and durability. This part is backed by Standard Ignition's limited warranty, providing coverage against defects in materials and workmanship under normal use.

BrandStandard Ignition
Part NumberWP640
Attachment MethodDirect
ColorBlack
Connector GenderFemale
Connector ShapeRectangular
Cruise Control Cancel IncludedNo
Cruise Control On/Off Operator IncNo
Cruise Control Resume IncludedNo
Cruise Control Set IncludedNo
Cruise Control Speed Adjustment InNo
DisplayedYes
FinishPlastic
Fog Light Operator IncludedNo
Indicator Markings IncludedNo
Latching High Beam Operator IncludNo
Main Light Operator IncludedNo
Momentary High Beam Flasher IncludNo
New or RemanNew
Number Of Connector Cavities2
Number Of Wiper Delay Settings3
Number Of Wiper Speed Settings4
Rear Window Washer Spray IncludedNo
Rear Window Wiper Delay Control InNo
Rear Window Wiper Speed Setting InNo
Running Light Operator IncludedNo
Terminal GenderMale
Terminal TypeBlade & Pin
Turn Signal Control IncludedNo
Turn Signal/Directional IndicatorNo
Voltage12
Windshield Washer Spray IncludedYes
Windshield Wiper Delay Setting IncYes
Windshield Wiper Speed Setting IncYes

This part fits 28 vehicles. Search below:

YearMakeModelBody TypePositionNotes
2018LexusGS FN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2018LexusGS350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2018LexusIS350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2018LexusRC FN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2018LexusRC300N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2018LexusRC350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2017LexusGS FN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2017LexusGS350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2017LexusIS350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2017LexusRC FN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2017LexusRC300N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2017LexusRC350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusGS FN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusGS200tN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusGS350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusIS200tN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusIS350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusRC FN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusRC200tN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusRC300N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2016LexusRC350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2015LexusIS250SedanN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2015LexusIS350SedanN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2015LexusRC FN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2015LexusRC350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2014LexusIS250SedanN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2014LexusIS350SedanN/ANot compatible with vehicles equipped with Rain Sensitive Wipers.
2013LexusGS350N/ANot compatible with vehicles equipped with Rain Sensitive Wipers.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1S128378465230681SW9861WS6895WW940

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.