2021 Toyota Corolla Electrical Switch & Relay Parts

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. Read more

2 A/C Refrigerant Pressure Switch parts are listed for the 2021 Toyota Corolla, from GPD and UAC. All of them fit every engine offered in the 2021 Corolla.

Part numbers include GPD 1713402 and UAC SW11605C.

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. Read more

This group shows a single part: DENSO 5670005.

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. Read more

DENSO supplies the 3 Blower Motor Relay parts for the 2021 Toyota Corolla. 2 parts fit every engine; the other 1 is engine-specific.

This group includes DENSO 5670005, DENSO 5670004 and DENSO 5670003.

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. Read more

9 Brake Light Switch parts are listed for the 2021 Toyota Corolla, from STANDARD MOTOR PRODUCTS, WELLS, FAMOUS BRAND and 2 other brands. STANDARD MOTOR PRODUCTS SLS305T carries the "Popular" badge. 8 parts fit every engine; the other 1 is engine-specific.

In the Economy grade, STANDARD MOTOR PRODUCTS, FAMOUS BRAND and HOLSTEIN supply 3 parts: the catalog's value-priced group. A representative part number is STANDARD MOTOR PRODUCTS SLS305T.

The Standard Replacement section lists 6 options from STANDARD MOTOR PRODUCTS, WELLS and BECK/ARNLEY — built to original-equipment specification. STANDARD MOTOR PRODUCTS SLS305 is listed in this group.

This group includes STANDARD MOTOR PRODUCTS SLS305T, FAMOUS BRAND SLA1024 and HOLSTEIN 2BLS0021 and the remaining parts above.

This table covers the relays that control the Cruise 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. Read more

One part is listed for the 2021 Toyota Corolla — DENSO 5670002.

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. Read more

DENSO supplies the 4 Daytime Running Light Relay parts for the 2021 Toyota Corolla. 2 parts fit every engine; the other 2 are engine-specific.

This group includes DENSO 5670005, DENSO 5670004 and DENSO 5670003 and the remaining parts above.

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. Read more

DENSO supplies the 4 Defroster Relay parts for the 2021 Toyota Corolla. 2 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: DENSO 5670005, DENSO 5670004 and DENSO 5670003, plus the other parts above.

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. Read more

One part is listed for the 2021 Toyota Corolla — DENSO 5670005.

This table covers the dimmer switches that select headlamp high and low beam. 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. Read more

2 Dimmer Switch parts for the 2021 Toyota Corolla come from WELLS. Every part fits all 3 engine options (1.8L L4, 1.8L L4 ELECTRIC/GAS and 2.0L L4).

This group includes WELLS 1S18181 and WELLS 1S18185.

This table covers the Door Jamb switches. 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. Read more

2 Door Jamb Switch parts for the 2021 Toyota Corolla come from 2 brands — DORMAN and STANDARD MOTOR PRODUCTS. Every part fits all 3 engine options (1.8L L4, 1.8L L4 ELECTRIC/GAS and 2.0L L4).

Part numbers include DORMAN 920719 and STANDARD MOTOR PRODUCTS AW1046.

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. Read more

2 Engine Control Module Relay parts for the 2021 Toyota Corolla come from DENSO. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: DENSO 5670004 and DENSO 5670003.

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. Read more

4 Fog / Driving Lamp Relay parts are listed for the 2021 Toyota Corolla, from DENSO and STANDARD MOTOR PRODUCTS. 3 parts fit every engine; the other 1 is engine-specific.

This group includes DENSO 5670004, DENSO 5670003 and STANDARD MOTOR PRODUCTS RY348T and the remaining parts above.

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. Read more

4 Fuel Pump / Circuit Opening Relay parts are listed for the 2021 Toyota Corolla, from DENSO and STANDARD MOTOR PRODUCTS. 3 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: DENSO 5670004, DENSO 5670002 and STANDARD MOTOR PRODUCTS RY345T, plus the other parts above.

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. Read more

One part is listed for the 2021 Toyota Corolla — DENSO 5670003.

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. Read more

2 Horn Relay parts for the 2021 Toyota Corolla come from 2 brands — DENSO and WELLS. Every part fits all 3 engine options (1.8L L4, 1.8L L4 ELECTRIC/GAS and 2.0L L4).

Listed part numbers: DENSO 5670004 and WELLS 1R1696.

This table covers the ignition switches that feed the starter 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. Read more

This group shows a single part: WELLS 1S17914.

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. Read more

One part is listed for the 2021 Toyota Corolla — VEMO V70730071.

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. Read more

11 Oil Pressure Sender / Switch parts are listed for the 2021 Toyota Corolla, from STANDARD MOTOR PRODUCTS, WELLS, HOLSTEIN and 4 other brands. STANDARD MOTOR PRODUCTS PS305T carries the "Popular" badge. 1 part fits every engine; the other 10 are engine-specific.

Economy: 4 parts, from STANDARD MOTOR PRODUCTS, HOLSTEIN, UNITED MOTOR PRODUCTS and 1 other brand. A representative part number is STANDARD MOTOR PRODUCTS PS305T.

The Standard Replacement section: 7 options from WELLS, STANDARD MOTOR PRODUCTS, HELLA and 1 other brand. HELLA 003259511 is listed in this group.

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. Read more

One part is listed for the 2021 Toyota Corolla — DENSO 5670003.

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. Read more

This group shows a single part: DENSO 5670004.

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. Read more

5 Power Window Switch parts are listed for the 2021 Toyota Corolla, from DORMAN and VEMO. 3 parts fit every engine; the other 2 are engine-specific.

This group includes DORMAN 920817, DORMAN 920818 and DORMAN 920809 and the remaining parts above.

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. Read more

5 Radiator Fan Relay parts for the 2021 Toyota Corolla come from 2 brands — DENSO and STANDARD MOTOR PRODUCTS. The "Popular" part is STANDARD MOTOR PRODUCTS RY345. 3 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: STANDARD MOTOR PRODUCTS RY345, DENSO 5670004 and DENSO 5670003, plus the other parts above.

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. Read more

One part is listed for the 2021 Toyota Corolla — DENSO 5670004.

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. Read more

4 Starter Motor Control Relay parts for the 2021 Toyota Corolla come from 2 brands — DENSO and STANDARD MOTOR PRODUCTS. 3 parts fit every engine; the other 1 is engine-specific.

Part numbers include DENSO 5670004, DENSO 5670003 and STANDARD MOTOR PRODUCTS RY348T, among others listed above.

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. Read more

One part is listed for the 2021 Toyota Corolla — DENSO 5670004.

This table covers the Transmission-Automatic Fluid Pressure switches. 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. Read more

One part is listed for the 2021 Toyota Corolla — WELLS 1S18321.

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. Read more

This group shows a single part: DENSO 5670003.

This table covers the combination / turn-signal switches. 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. Read more

WELLS supplies both parts for the 2021 Toyota Corolla. All of them fit every engine offered in the 2021 Corolla.

Part numbers include WELLS 1S18181 and WELLS 1S18185.

This table covers the Wiper / Washer switches. 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. Read more

2 Wiper / Washer Switch parts for the 2021 Toyota Corolla come from STANDARD MOTOR PRODUCTS.

This group includes STANDARD MOTOR PRODUCTS WP607 and STANDARD MOTOR PRODUCTS WP661.