39 Electrical switch & relay parts are listed for the 2023 Lexus LS500, in 22 part types, covering the 3.5L V6 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2023 Lexus LS500, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. Most of the listed parts are Oil Pressure Sender / Switch (6 parts), Power Window Switch (4 parts) and Blower Motor Relay (2 parts). The other 19 part types cover the remaining 27 parts.
Every part on this page is matched to the 3.5L V6 Turbocharged — the only engine offered in the 2023 Lexus LS500.
The most listed brands for 2023 Lexus LS500 electrical switch & relay parts are DENSO (24 parts), WELLS (7 parts) and UAC (2 parts), plus 6 more brands. Quality grades include Standard Replacement and Economy.
2 parts on this 2023 Lexus LS500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including BECK/ARNLEY 2011649 (Oil Pressure Sender / Switch) and HELLA 003259511 (Oil Pressure Sender / Switch). Click any part number to see every vehicle that part fits.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC | SW11605C | 🇺🇸 US 🇨🇦 CA | Pressure Transducer | View on Amazon |
This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: UAC SW11605C.
A/C System Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC | RE8402C | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the A/C System circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: UAC RE8402C.
Blower Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Blower Motor Relay parts for the 2023 Lexus LS500 come from DENSO.
This group includes DENSO 5670004 and DENSO 5670003.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | SLS656 | 🇺🇸 US 🇨🇦 CA | Color/Finish: Gray, Black | View on Amazon |
| WELLS | 1S16748 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Brake Light Switch parts for the 2023 Lexus LS500 come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS SLS656 and WELLS 1S16748.
Daytime Running Light Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Daytime Running Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Daytime Running Light Relay parts for the 2023 Lexus LS500 come from DENSO.
This group includes DENSO 5670004 and DENSO 5670003.
Defroster Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Defroster circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Defroster Relay parts for the 2023 Lexus LS500 come from DENSO.
Part numbers include DENSO 5670004 and DENSO 5670003.
Electronic Stability System Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670011 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Electronic Stability System circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: DENSO 5670011.
Engine Control Module Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Engine Control Module circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
DENSO supplies both parts for the 2023 Lexus LS500.
Part numbers include DENSO 5670004 and DENSO 5670003.
Fog / Driving Lamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Fog / Driving Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Fog / Driving Lamp Relay parts for the 2023 Lexus LS500 come from DENSO.
This group includes DENSO 5670004 and DENSO 5670003.
Fuel Pump / Circuit Opening Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Fuel Pump / Circuit Opening circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: DENSO 5670004.
Headlamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Headlamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: DENSO 5670003.
Horn Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1R1696 | 🇺🇸 US 🇨🇦 CA | Connector Gender: MaleMounting Hardware Included: No | View on Amazon |
This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
2 Horn Relay parts are listed for the 2023 Lexus LS500, from DENSO and WELLS.
Listed part numbers: DENSO 5670004 and WELLS 1R1696.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2OPS0003 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS | 2561037 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Popular | 2011649 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| HELLA Popular | 003259511 | 🇺🇸 US 🇨🇦 CA | 1-Pin ConnectorColor: Black | View on Amazon |
| ACDELCO | E1805A | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| WELLS | 1S6653 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
6 Oil Pressure Sender / Switch parts for the 2023 Lexus LS500 come from 6 brands — HOLSTEIN, WALKER PRODUCTS, BECK/ARNLEY and 3 other brands. The "Popular" part is BECK/ARNLEY 2011649.
The Economy section lists 2 options from HOLSTEIN and WALKER PRODUCTS — the catalog's value-priced group. HOLSTEIN 2OPS0003 is listed in this group.
In the Standard Replacement grade, BECK/ARNLEY, HELLA, ACDELCO and 1 other brand supply 4 parts: built to original-equipment specification. A representative part number is BECK/ARNLEY 2011649.
Part numbers include BECK/ARNLEY 2011649, HOLSTEIN 2OPS0003 and WALKER PRODUCTS 2561037, among others listed above.
Parking Brake Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670011 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Parking Brake Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: DENSO 5670011.
Power Steering Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Power Steering circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: DENSO 5670003.
Power Window Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Power Window circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2023 Lexus LS500 — DENSO 5670004.
Power Window Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S16220 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| WELLS | 1S16207 | 🇺🇸 US 🇨🇦 CA | Front Leftwithout Door Window Sunshades | View on Amazon |
| WELLS | 1S16208 | 🇺🇸 US 🇨🇦 CA | Front Leftwith Door Window Sunshades | View on Amazon |
| WELLS | 1S17878 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
4 Power Window Switch parts for the 2023 Lexus LS500 come from WELLS.
Part numbers include WELLS 1S16220, WELLS 1S16207 and WELLS 1S16208, among others listed above.
Radiator Fan Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | Motor Relay | View on Amazon |
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004Motor Relay | View on Amazon |
This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
DENSO supplies both parts for the 2023 Lexus LS500.
Listed part numbers: DENSO 5670004 and DENSO 5670003.
Seat Heater Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Seat Heater circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: DENSO 5670004.
Starter Motor Control Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
DENSO supplies both parts for the 2023 Lexus LS500.
This group includes DENSO 5670004 and DENSO 5670003.
Tail Lamp Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670004 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the Tail Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
This group shows a single part: DENSO 5670004.
Turn Signal Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 5670003 | 🇺🇸 US 🇨🇦 CA | 39795-SJK-004 | View on Amazon |
This table covers the relays that control the Turn Signal circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 2023 Lexus LS500 — DENSO 5670003.
Buying Electrical Switch & Relay Parts for a 2023 Lexus LS500
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the 3.5L V6 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Oil Pressure Sender / Switch and Power Window Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2023 Lexus LS500?
Our catalog currently lists 39 electrical switch & relay parts for the 2023 Lexus LS500 across 22 subcategories and 9 brands, covering the 3.5L V6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 2023 Lexus LS500?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2023 Lexus LS500 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2023 Lexus LS500?
Every part on this page is matched to the 3.5L V6 Turbocharged engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2023 Lexus LS500
Electrical Switch & Relay Parts for Other Lexus LS500 Years
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