Toyota 28100-03100 Starter Motor

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Remove the starter motor mounting bolts.

To remove the starter motor from four-cylinder models, start by disconnecting the cable from the negative battery terminal. For 2.4L engines on 2003 and earlier models, remove the air filter housing and air intake duct, while on 2004 and later models, remove the battery and battery tray. For 2.7L engines, remove the engine cover and then remove the air filter housing, upper and lower air intake ducts, and air filter bracket. Remove the battery for all engines. Detach the electrical connectors from the starter/solenoid assembly and remove the starter motor mounting bolts to remove the starter. For V6 models, disconnect the cable from the negative battery terminal and remove the battery and battery tray for Highlander models with a 2GR-FKS engine, or just the battery for 2GR-FE models. Remove the air filter housing and air intake duct for all models. On 1999 through 2003 V6 models, remove the starter motor first, then disconnect the electrical connectors. On RX350 models with a 2GR-FKS engine, disconnect the transaxle shift control cable and remove the bracket mounting bolts and bracket from the transaxle. On 2004 and later models, disconnect the electrical connectors and remove the starter mounting bolts, then remove the starter. The installation process is the reverse of removal.

Several items should be checked, including the battery cable clamps, battery cables, battery, wiring and connections of the starter solenoid, mounting bolts of the starter, fusible link, Park/Neutral switch, and starter relay.

In the event of a starting circuit malfunction, it's essential not to immediately assume that the starter is the culprit. Instead, conduct a systematic check of various components and connections. Ensure the battery cable clamps are clean and securely tightened, inspect the condition of the battery cables and replace any faulty ones, assess the battery's condition and replace it if it fails tests, examine the starter solenoid wiring and connections, verify the tightness of starter mounting bolts, check fusible links if present, and inspect the ignition switch circuit. Also, examine the operation of the Park/Neutral switch (for automatic transaxles) or the clutch start switch (for manual transaxles) to ensure they are correctly functioning. Confirm that the shift lever is in the appropriate position. If the starter doesn't engage when the ignition switch is turned to the start position, check for battery voltage at the solenoid's positive terminal while someone activates the ignition switch. If voltage is absent, consult wiring diagrams to check fuses and relays in the starting system. If voltage is present but the starter doesn't operate, remove and bench test the starter. If the starter cranks slowly, evaluate the cranking voltage and current draw from the battery, ensuring they meet specified ranges; if not, consider replacing the starter. Finally, if the starter receives voltage but doesn't activate, perform a bench test to determine if the solenoid or starter motor is defective, ruling out the possibility of an engine seizure.

Detach the cable from the negative terminal of the battery. If the stereo in your vehicle is equipped with an anti-theft system, make sure you have the correct activation code before disconnecting the battery. Remove the battery from the engine compartment. Disconnect and remove the cruise control actuator from the engine compartment, if equipped. Detach the electrical connectors from the starter/solenoid assembly. Remove the starter motor mounting bolts. Remove the bracket from the upper section of the starter/solenoid assembly. It is necessary to loosen one or two of the bracket bolts to allow the starter/solenoid assembly to partially drop down to gain access to the remaining bracket assembly bolts and hardware. Installation is the reverse of removal.

Examine the starter solenoid wiring and connections.