Toyota 28100-03100 Starter Motor

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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.

To remove the starter motor on a four-cylinder model, disconnect the negative battery terminal cable. Also, remove the air filter housing and intake duct for 2.4L engines 2003 and earlier models, or the Car Batteries for models that are 2004 and later. Next, you should detach the engine cover, air filter housing, intake ducts, and filter bracket on the 2.7L engines. Then, disconnect the electrical connectors and remove the mounting bolts. For V6 models, disconnect the negative battery cable and remove the battery and the battery tray for Highlander models or just the battery depending on the engine models. Once you remove the battery, remove the air filter housing as well as the intake duct on all models. On 1999-2003 V6 models, start by removing the starter motor, and then the electrical connectors. On RX350 models that come with a 2GR-FKS engine, remove the shift control cable, the bracket, and the mounting bolts. On models that are 2004 and later, remove the electrical connectors and the starter mounting bolts. Installation is the reverse of the removal.

If a starting circuit malfunctions, don't immediately blame the starter. Instead, systematically check components and connections. Ensure battery cable clamps are clean and tight, inspect battery cables, assess the battery's condition, examine the starter solenoid wiring, check starter mounting bolts, fusible links, and the ignition switch circuit. Also, check the Park/Neutral switch (automatic) or clutch start switch (manual) and confirm the shift lever's position. If the starter doesn't engage, check for battery voltage at the solenoid's positive terminal. If absent, check fuses and relays. If present but the starter doesn't work, bench test the starter. If it cranks slowly, check the cranking voltage and current draw. If they're off, replace the starter. If the starter gets voltage but doesn't activate, bench test to see if the solenoid or starter motor is defective.

Detach the cable from the negative terminal of the battery. For 2006 and earlier models, remove the battery and battery tray from the engine compartment, disconnect and remove the cruise control actuator if equipped, and disconnect the transaxle shift control cable. Detach the electrical connectors from the starter/solenoid assembly, remove the starter motor mounting bolts, and take off the bracket from the upper section of the starter/solenoid assembly, noting that it may be necessary to loosen one or two of the bracket bolts to allow the starter/solenoid assembly to partially drop down for access to the remaining bracket assembly bolts and hardware. Installation is the reverse of removal. For 2007 and later models, remove the battery, the air filter housing assembly, the air inlet tubes, and the filter housing support bracket. Disconnect the wiring from the starter, remove the mounting bolts, and lift out the starter. Installation is the reverse of removal.

The battery voltage should not drop below 8.0 volts on manual transaxle models or 8.5 volts on automatic transaxle models.

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.

Examine the starter solenoid wiring and connections.

Remove the starter motor mounting bolts.

Check the starter cranking voltage and the current draw from the battery while the starter assembly is on the engine. Crank the engine for 10 seconds or less and observe the battery voltage; it should not drop below 8.0 volts for manual transaxle models or 8.5 volts for automatic transaxle models. Also, observe the current draw using an ammeter; it should not exceed 400 amps or drop below 250 amps. If the values are not within the correct range, replace the starter. Ensure the battery is in good condition, the battery cold-cranking rating is adequate, and the battery terminals and cables are clean and not corroded. In extreme cold temperatures, warm the battery or engine block before testing.

The battery voltage should not drop below 8.0 volts on manual transaxle models or 8.5 volts on automatic transaxle models.

Remove the starter motor mounting bolts.

Detach the electrical connectors from the starter/solenoid assembly.