Keep the wiper circuit switching cleanly with the Standard Ignition Wiper Motor Relay RY1936. It installs as a direct-fit replacement for the 2013-2018 Lexus ES300H and 2013-2018 Lexus ES350, restoring the electrical switching that operates the wiper system on the listed applications.
A relay carries no engine-specific attributes; it simply controls current flow to the wiper motor. If the original relay is faulty, this RY1936 replaces it.
Interchange: R7439 · AR7440 · 8594033170
This part cross-references / interchanges with the following part numbers:
What does this relay do?
It's an electrical switch that uses a low-current control signal to open and close the higher-current wiper motor circuit, allowing the motor to run when commanded.
Will it fit my vehicle?
It's a direct-fit replacement for the 2013-2018 Lexus ES300H and 2013-2018 Lexus ES350. Check the Buyer's Guide tab to confirm fitment for your vehicle.
What are the signs this relay may need replacing?
Wipers that don't run, operate intermittently, or won't switch off can point to the relay. Diagnose the cause first, since these symptoms can have other sources.
What numbers does this relay interchange with?
It cross-references R7439, AR7440, and 8594033170. Its own manufacturer part number is RY1936.
Is any hardware included?
This listing is for the relay itself. Consult the vehicle service information for any additional parts your repair may require.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
