Keep the right circuit switching on cue with the Standard Ignition Anti-Theft Relay / Headlight Relay RY-636. It installs as a direct-fit replacement for the 2003-2004 Hyundai Elantra, 1999-2005 Hyundai Sonata, 2001 Hyundai XG300 and 2002-2005 Hyundai XG350.
This part is cataloged under two names — Anti-Theft Relay and Headlight Relay — so it may be listed either way for your vehicle.
- Electromechanical switching: uses a low-current control signal to open and close a higher-current circuit.
- Dual application: serves the anti-theft and headlight circuits on the listed Hyundai models.
- Direct replacement: designed to install in place of the original relay on the listed applications.
Signs the relay may need replacing include intermittent or no operation of the circuit it controls, or a relay that clicks but fails to power the load. Because these symptoms can also stem from wiring, fuses, or switches, diagnose the cause before replacing. If a failed relay is the cause of the fault, this unit replaces it.
Interchange: R6141 · 20499 · AR6141 · 9522538100
Manufacturer part number RY-636
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Will this relay fit my vehicle?
It's a direct-fit replacement for the 2003-2004 Hyundai Elantra, 1999-2005 Hyundai Sonata, 2001 Hyundai XG300 and 2002-2005 Hyundai XG350. See the Buyer's Guide tab to confirm.
Why is it listed as both an anti-theft and headlight relay?
It's cataloged under both names, so it may appear either way in a parts lookup. It's the same relay, manufacturer part number RY-636.
What does this relay do?
It's an electromechanical switch that uses a low-current control signal to open and close a higher-current circuit for the anti-theft and headlight systems on the listed models.
What are signs the relay may need replacing?
Intermittent or no operation of the circuit it controls, or a relay that clicks but doesn't power the load. Other causes like wiring or fuses can mimic this, so diagnose first.
What numbers does this relay interchange with?
It cross-references R6141, 20499, AR6141 and 9522538100. Its own manufacturer part number is RY-636.
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