Lexus LS electrical errors

Help! My 2017 Lexus LS with a gasoline engine is throwing weird errors. I'm seeing an error message on the speedometer, and the car's computer has stored some errors too. Starting the engine feels weak, and I'm noticing general electrical issues. Could it be the auxiliary battery not charging properly? It's got 233993 km on the clock.

4 comment(s)

I had a similar problem on my LS. Is it struggling to hold a charge? My car was acting all sorts of strange, with similar error messages and electrical glitches. It turned out to be related to the auxiliary battery system. Have you checked the voltage?

Thanks for the quick reply! I haven't checked the voltage yet, but it does seem like it's struggling to hold a charge. Did your issue also cause a weak engine start, or other weird electrical stuff?

Yeah, the weak engine start was a big symptom, alongside various random electrical malfunctions. I'd suggest getting it checked by a professional. It could save you from bigger headaches down the line. Better safe than sorry with these cars!

Thanks a bunch for the advice! Turns out it was the aux battery. Cost me 290€ to replace. All the errors are gone now!

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