2021 Lexus ES250 Electrical Switch & Relay Parts

Engine:
2.5L L4

This page lists 36 electrical switch & relay parts for the 2021 Lexus ES250, across 22 part types, covering the 2.5L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.

The switch and relay system on the 2021 Lexus ES250 covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are Blower Motor Relay (3 parts), Daytime Running Light Relay (3 parts) and Defroster Relay (3 parts). The other 19 part types cover the remaining 27 parts.

A/C Refrigerant Pressure Switch

Brand Part Number Markets Notes Buy
GPD 1713402
🇺🇸 US 🇨🇦 CA
Transducer
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Amazon
UAC SW11605C
🇺🇸 US 🇨🇦 CA
Pressure Transducer
Fitment notes — UAC SW11605C
Pressure Transducer
Transducer
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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.

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.

Auxiliary Heater Relay

Brand Part Number Markets Notes Buy
DENSO 5670005
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the relays that control the Auxiliary 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.

Blower Motor Relay

Brand Part Number Markets Notes Buy
DENSO 5670005
🇺🇸 US 🇨🇦 CA
View on
Amazon
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.

Brake Light Switch

Brand Part Number Markets Notes Buy
WELLS 1S16745
🇺🇸 US 🇨🇦 CA
From 09/2020
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.

Daytime Running Light Relay

Brand Part Number Markets Notes Buy
DENSO 5670005
🇺🇸 US 🇨🇦 CA
View on
Amazon
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.

Defroster Relay

Brand Part Number Markets Notes Buy
DENSO 5670005
🇺🇸 US 🇨🇦 CA
View on
Amazon
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.

Dimmer Relay

Brand Part Number Markets Notes Buy
DENSO 5670005
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the relays that control the Dimmer 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.

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.

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.

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.

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.

Horn Relay

Brand Part Number Markets Notes Buy
DENSO 5670004
🇺🇸 US 🇨🇦 CA
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.

Neutral Safety Switch / Range Sensor

Brand Part Number Markets Notes Buy
VEMO V70730066
🇺🇸 US 🇨🇦 CA
Fits PremiumFrom 09/2020
Fitment notes — VEMO V70730066
Fits:
PremiumFrom 09/2020
or:
Base Model or F Sport or Luxury or Ultra Luxury
View on
Amazon

This table covers the Neutral Safety Switch / Range sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.

Oil Pressure Sender / Switch

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS PS765
🇺🇸 US 🇨🇦 CA
with LightExcept Japan Built Vehicle
View on
Amazon
WELLS 1S16610
🇺🇸 US 🇨🇦 CA
North American Built
View on
Amazon
WELLS 1S16611
🇺🇸 US 🇨🇦 CA
Parts Manufactured in Japan
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.

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.

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.

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.

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.

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
STANDARD MOTOR PRODUCTS RY1615
🇺🇸 US 🇨🇦 CA
Connector Shape: Square
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.

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.

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.

Buying Electrical Switch & Relay Parts for a 2021 Lexus ES250

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 2.5L L4 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: Blower Motor Relay and Daytime Running Light Relay .

Frequently Asked Questions

How many electrical switch & relay parts fit the 2021 Lexus ES250?

Our catalog currently lists 36 electrical switch & relay parts for the 2021 Lexus ES250 across 22 subcategories and 6 brands, covering the 2.5L L4 engine. Each part is matched to the engine(s) it fits.

What are the signs of electrical switch & relay problems on a 2021 Lexus ES250?

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 2021 Lexus ES250 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 2021 Lexus ES250?

Every part on this page is matched to the 2.5L L4 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 2021 Lexus ES250

Electrical Switch & Relay Parts for Other Lexus ES250 Years

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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.