2020 Toyota Corolla Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

16 Alternator / Generator parts for the 2020 Toyota Corolla come from 7 brands — PURE ENERGY, REMY, TERREPOWER and 4 other brands. The "Popular" part is TYC 221793.

The New section lists 2 options from TYC and WAI GLOBAL — brand-new units rather than rebuilt ones. TYC 221793 is listed in this group.

The Remanufactured section lists 13 options from PURE ENERGY, REMY, TERREPOWER and 2 other brands — factory-rebuilt units with new wear components. PURE ENERGY 14084 is listed in this group.

1 further part sits outside the graded sections, with the same engine-level match.

This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

7 Alternator / Generator Pulley parts are listed for the 2020 Toyota Corolla, from LITENS, CONTINENTAL and WELLS. LITENS 920055A carries the "Popular" badge. 5 parts fit every engine; the other 2 are engine-specific.

Part numbers include LITENS 920055A, LITENS 920083A and CONTINENTAL 49963, among others listed above.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

12 Battery parts are listed for the 2020 Toyota Corolla, from FVP, DEKA, MOTORCRAFT and 5 other brands. DEKA 9A47 carries the "Popular" badge.

The AGM (Extended Life) section lists 7 options from FVP, DEKA, EXIDE and 3 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A47 is listed in this group.

The Performance AGM (Extended Life + Increased Power) section lists 1 option from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT61047 is listed in this group.

4 ungrouped parts are not assigned to a grade, with the same engine-level match.

This table covers the Battery Cooling fans. Typical signs include overheating at idle, a fan that never comes on, or a blade that hits the shroud. Confirm the fan command and the relay before replacing the assembly. Read more

2 Battery Cooling Fan parts are listed for the 2020 Toyota Corolla, from FOUR SEASONS and GPD.

This group includes FOUR SEASONS 76809 and GPD 2312075.

This table covers the Battery Current 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

This group shows a single part: WELLS 5S17121.

This table covers the terminals and clamps that connect cables to the battery posts. Read more

6 Battery Terminal parts are listed for the 2020 Toyota Corolla, from BECK/ARNLEY, DORMAN, STANDARD MOTOR PRODUCTS and 1 other brand. BECK/ARNLEY 2060001 carries the "Popular" badge. All of them fit every engine offered in the 2020 Corolla.

Listed part numbers: BECK/ARNLEY 2060001, STANDARD MOTOR PRODUCTS BP100P and AUTOTECNICA TY1318200, plus the other parts above.

This table covers the Cruise Control Distance 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 2020 Toyota Corolla — VEMO V70720588.

This table covers the horns mounted in the front of the vehicle. Read more

FIAMM supplies the 7 Horn parts for the 2020 Toyota Corolla. FIAMM 72112 carries the "Popular" badge. All of them fit every engine offered in the 2020 Corolla.

In the Accessory Replacement grade, FIAMM supplies 5 parts: grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. A representative part number is FIAMM 72112.

The Standard Replacement section lists 2 options from FIAMM — built to original-equipment specification. FIAMM 7421122 is listed in this group.

Listed part numbers: FIAMM 72112, FIAMM 7410024 and FIAMM 6602023, plus the other parts above.

This table covers the Hybrid Battery Voltage 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 2020 Toyota Corolla — STANDARD MOTOR PRODUCTS BSC35.

This table covers the key fobs that lock, unlock and start the vehicle. Read more

This group shows a single part: DORMAN 99710ST.

This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor. Read more

9 Speed Sensor parts are listed for the 2020 Toyota Corolla, from BECK/ARNLEY, HOLSTEIN, STANDARD MOTOR PRODUCTS and 3 other brands. ULTRA-POWER SC658 carries the "Popular" badge.

In the Economy grade, BECK/ARNLEY, HOLSTEIN and ULTRA-POWER supply 5 parts: the catalog's value-priced group. A representative part number is ULTRA-POWER SC658.

The Standard Replacement section: 3 options from STANDARD MOTOR PRODUCTS, AISIN and DELPHI. STANDARD MOTOR PRODUCTS SC658 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Listed part numbers: ULTRA-POWER SC658, BECK/ARNLEY 0900004 and BECK/ARNLEY 0900013, plus the other parts above.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

18 Starter Motor parts for the 2020 Toyota Corolla come from 10 brands — WAI GLOBAL, BOSCH, PURE ENERGY and 7 other brands. The "Popular" part is TYC 116373.

The New section: 6 options from WAI GLOBAL, TYC, ULTRA-POWER and 1 other brand. TYC 116373 is listed in this group.

The Remanufactured section: 11 options from PURE ENERGY, FVP, REMY and 4 other brands. PURE ENERGY 19573 is listed in this group.

1 further part sits outside the graded sections, with the same engine-level match.