What kind of alternator does a Toyota GS400 have?
Seen above is a factory re-manufactured alternator next to a failing unit removed from a 1998 GS400. The output of the failing unit hovered around 11.5 volts and the vehicle would shut down if more than a minimal load was put on the electrical system.
What should the voltage be on a Toyota alternator?
The battery provides the initial voltage and amperage to crank over the engine, afterwards the alternator takes over in generating the power needed to run the electrical systems in the vehicle. At idle under minimal load, a Toyota or Lexus’s voltage at the battery should hover at or above 14 volts (many times closer to 14.5).
Where can I get a replacement alternator for my Lexus?
Frequently the Toyota dealer will sell the same part number at a lower price point – the above Lexus replacement alternator was sourced through Toyota at a cost savings of about $50.
Why is my alternator not working in my Lexus?
With the headlights, blower motor, and radio on this should change very little. If the voltages begin to drop into the low 13 volts or below (usually rapidly as the loads increase), a failing alternator is to blame. Seen above is a factory re-manufactured alternator next to a failing unit removed from a 1998 GS400.
How can I check the status of my alternator?
The ultimate way to check the status of the alternator is by removing it out of the car and have it bench tested for free at most auto stores, but a handheld digital meter will be able to do most of the same tests.
What does the ECU do on a Lexus?
This article applies to the Lexus IS, GS, RX, ES (2004-2014). The engine control unit, or ECU, is basically the brains of your car. The ECU stores diagnostic trouble codes when it senses a malfunction so a mechanic can fix it later. It’s also the ECU’s job to store your driving data to customize your ride.
Where is the fuse box on a Lexus ECU?
Disconnect negative battery cable. This is the recommended way. It’s the easiest, there’s no risk of getting shocked by the battery, and it requires no special tools. All you need to do is remove and then re-install two fuses. Locate the fuse box under the hood on the passenger side near the strut tower.
Is there a way to reset the ECU?
This is the main way to reset the ECU. Be warned that going this route will clear out all presets including those for your radio, seats, navigation, etc. This is the easiest option and potentially the most annoying because it forces you to reset the settings.