2018 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

14 Alternator / Generator parts are listed for the 2018 Toyota Highlander, from TYC, PURE ENERGY, BOSCH and 5 other brands. TYC 221248 carries the "Popular" badge.

In the New grade, TYC and WAI GLOBAL supply 3 parts: brand-new units rather than rebuilt ones. A representative part number is TYC 221248.

In the Remanufactured grade, PURE ENERGY, FVP, REMY and 3 other brands supply 10 parts: factory-rebuilt units with new wear components. A representative part number is DENSO 2101210.

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

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

One part is listed for the 2018 Toyota Highlander — 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

This group shows a single part: 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

6 Alternator / Generator Pulley parts for the 2018 Toyota Highlander come from 4 brands — CONTINENTAL, LITENS, ACKOJA and 1 other brand.

This group includes ACKOJA A70230007, CONTINENTAL 49931 and CONTINENTAL 49972 and the remaining parts 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

8 Battery parts for the 2018 Toyota Highlander come from 6 brands — DEKA, BOSCH, EXIDE and 3 other brands. The "Popular" part is DEKA 9A3585. 2 parts fit every engine; the other 6 are engine-specific.

Part numbers include DEKA 9A3585, DEKA 9A34R and BOSCH S6523B, among others listed above.

This table covers the clamps and brackets that secure the battery. Read more

2 Battery Hold Down parts are listed for the 2018 Toyota Highlander, from SKP and VARIOUS MFR. All of them fit every engine offered in the 2018 Highlander.

Part numbers include SKP SK74404 and VARIOUS MFR TO2996100.

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

5 Battery Terminal parts for the 2018 Toyota Highlander come from 4 brands — BECK/ARNLEY, STANDARD MOTOR PRODUCTS, AUTOTECNICA and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS BP100P. 4 parts fit every engine; the other 1 is engine-specific.

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

This table covers the Blind Spot Detection 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

2 Blind Spot Detection Sensor parts are listed for the 2018 Toyota Highlander, from STANDARD MOTOR PRODUCTS and WELLS. All of them fit every engine offered in the 2018 Highlander.

Listed part numbers: STANDARD MOTOR PRODUCTS BSD39 and WELLS 5S16814.

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

2 Cruise Control Distance Sensor parts for the 2018 Toyota Highlander come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS. Every part fits all 3 engine options (2.7L L4, 3.5L V6 and 3.5L V6 ELECTRIC/GAS).

Listed part numbers: STANDARD MOTOR PRODUCTS CCD10 and WELLS 5S17123.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

This group shows a single part: BUSSMANN FLM50.

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

11 Horn parts for the 2018 Toyota Highlander come from FIAMM. The "Popular" part is FIAMM 7210223. Every part fits all 3 engine options (2.7L L4, 3.5L V6 and 3.5L V6 ELECTRIC/GAS).

The Accessory Replacement section lists 7 options from FIAMM — grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. FIAMM 7210223 is listed in this group.

In the Standard Replacement grade, FIAMM supplies 4 parts: built to original-equipment specification. A representative part number is FIAMM 7250522.

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

This group shows a single part: STANDARD MOTOR PRODUCTS BSC33.

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

One part is listed for the 2018 Toyota Highlander — DORMAN 99682ST.

This table covers the replacement shells for the key fob. Read more

One part is listed for the 2018 Toyota Highlander — DORMAN 92068.

This table covers the Lane Departure Camera modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

3 Lane Departure Camera / Module parts are listed for the 2018 Toyota Highlander, from DORMAN, STANDARD MOTOR PRODUCTS and WELLS. All of them fit every engine offered in the 2018 Highlander.

This group includes DORMAN 601961, STANDARD MOTOR PRODUCTS LDS11 and WELLS 8A1007.

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

One part is listed for the 2018 Toyota Highlander — TECHPRO TO1075107.

This table covers the Side Object Sensor modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

One part is listed for the 2018 Toyota Highlander — DORMAN 601481.

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

7 Speed Sensor parts for the 2018 Toyota Highlander come from 6 brands — STANDARD MOTOR PRODUCTS, BECK/ARNLEY, HOLSTEIN and 3 other brands. The "Popular" part is AISIN RST0041.

The Economy section lists 3 options from BECK/ARNLEY, HOLSTEIN and VEMO — the catalog's value-priced group. BECK/ARNLEY 0900005 is listed in this group.

Standard Replacement: 3 parts, from AISIN, STANDARD MOTOR PRODUCTS and DELPHI. A representative part number is AISIN RST0041.

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

Part numbers include AISIN RST0041, BECK/ARNLEY 0900005 and HOLSTEIN 2VSS0083, among others listed 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

24 Starter Motor parts are listed for the 2018 Toyota Highlander, from PURE ENERGY, REMY, TERREPOWER and 7 other brands. REMY 99632 carries the "Popular" badge.

New: 10 parts, from ULTRA-POWER, WAI GLOBAL, REMY and 5 other brands. A representative part number is REMY 99632.

Remanufactured: 13 parts, from PURE ENERGY, BOSCH, REMY and 5 other brands. A representative part number is PURE ENERGY 19108.

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

This table covers the Starter solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

2 Starter Solenoid parts are listed for the 2018 Toyota Highlander, from STANDARD MOTOR PRODUCTS and WELLS. All of them fit every engine offered in the 2018 Highlander.

This group includes STANDARD MOTOR PRODUCTS SS770 and WELLS 1M1617.