2020 Toyota Highlander 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

6 Alternator / Generator parts for the 2020 Toyota Highlander come from 6 brands — TYC, PURE ENERGY, BOSCH and 3 other brands. The "Popular" part is TYC 221248.

The New section lists 1 option from TYC — brand-new units rather than rebuilt ones. TYC 221248 is listed in this group.

The Remanufactured section lists 5 options from PURE ENERGY, BOSCH, FVP and 2 other brands — factory-rebuilt units with new wear components. PURE ENERGY 11889 is listed in this group.

Listed part numbers: TYC 221248, PURE ENERGY 11889 and BOSCH AL3403X, plus the other parts above.

This table covers the rectifier diode packs in the alternator. Read more

This group shows a single part: BOSCH 1986AE0621.

This table covers the bearings in the alternator housing. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

One part is listed for the 2020 Toyota Highlander — BOSCH 1986AE0628.

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

2 Alternator / Generator Pulley parts are listed for the 2020 Toyota Highlander, from CONTINENTAL and LITENS.

This group includes CONTINENTAL 49972 and LITENS 920068A.

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 Highlander, from DEKA, LUCAS, EXIDE and 4 other brands. DEKA 9A47 carries the "Popular" badge. 1 part fits every engine; the other 11 are engine-specific.

The AGM (Extended Life) section lists 10 options from DEKA, LUCAS, 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 2 options 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.

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: STANDARD MOTOR PRODUCTS BSC119.

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

3 Battery Terminal parts are listed for the 2020 Toyota Highlander, from BECK/ARNLEY, DORMAN and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2020 Highlander.

Part numbers include BECK/ARNLEY 2060001, DORMAN 926515 and STANDARD MOTOR PRODUCTS BP100P.

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 Highlander — 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 Highlander. FIAMM 72112 carries the "Popular" badge. All of them fit every engine offered in the 2020 Highlander.

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.

This group includes FIAMM 72112, FIAMM 7410024 and FIAMM 6602023 and the remaining parts above.

This table covers the ultrasonic park-aid sensors in the bumper. 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

3 Parking Aid Sensor parts for the 2020 Toyota Highlander come from 2 brands — STANDARD MOTOR PRODUCTS and TECHPRO. Every part fits both the 2.5L L4 ELECTRIC/GAS and the 3.5L V6.

Part numbers include STANDARD MOTOR PRODUCTS PPS310, STANDARD MOTOR PRODUCTS PPS302 and TECHPRO TO1075110.

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

3 Speed Sensor parts are listed for the 2020 Toyota Highlander, from STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include STANDARD MOTOR PRODUCTS SC816, STANDARD MOTOR PRODUCTS SC758 and WELLS 5S17464.

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

12 Starter Motor parts for the 2020 Toyota Highlander come from 8 brands — WAI GLOBAL, PURE ENERGY, REMY and 5 other brands. The "Popular" part is TYC 116366.

The New section: 4 options from WAI GLOBAL, TYC and ULTRA-POWER. TYC 116366 is listed in this group.

The Remanufactured section: 8 options from PURE ENERGY, REMY, TERREPOWER and 2 other brands. PURE ENERGY 16366 is listed in this group.