Is there a problem with my Lexus battery?
Gonna have it checked at the dealer once more. Definitely something is draining the battery , even with engine, lights , etc. off. Any one has similar problems or clues ? Is 2 times problem enough to get it replaced under the California lemon law ?
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.
Why is the battery draining on my Lexus RX300?
When your vehicle gets back to the dealer, insist that the alternator is thoroughly checked out before settling for just another new battery. Your alternator may not be delivering sufficient charge to keep the battery up to specs. Have you noticed your voltmeter gauge on your dashboard?
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.
This 2001 Lexus RX300 would drain the battery periodically when the vehicle sits. After testing for a parasitic draw and none found we performed the normal electrical system tests and returned the vehicle. The battery load test was weak but not completely failing, I was confident that it was not the cause of the problem.
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.
Can a Lexus ECU start on the second try?
Don’t be alarmed; nine times out of ten this will happen for everyone, but as long as the battery cables were tightened properly or the fuses were inserted properly it’ll start on the second try. If you used option 3, this is less likely to happen but is still possible.
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.
What to do if your Lexus has a lemon problem?
Most states’ lemon laws require at least three or four repair attempts for the same problem before the customer has a case, but check with your Attorney General’s office for the exact details. They probably have a Consumer Affairs toll-free number that links to a department in Sacramento.
What should the voltage be on a Lexus RX300?
Since it’s been driven everyday, should be around 12+ volts the night before, like you said. Most states’ lemon laws require at least three or four repair attempts for the same problem before the customer has a case, but check with your Attorney General’s office for the exact details.