GS electrical issues

My 2013 Lexus GS with a gasoline engine has been showing some weird electrical issues at 174632 km. I'm getting an error message in the speedometer, plus there's an error stored in the memory. Starting the engine is weak, and the car acts like it has some generell electrical malfunction when starting. Suspect auxiliary battery not charging. Anyone else seen this?

4 comment(s)

GS, huh? I had something similar happen in mine. Any problems with low voltage or anything like that when starting?

Voltage drop during engine start seems significant, yes. Did your symptoms include similar error codes?

Yeah, sounds like my issue exactly. I wouldn't mess with it too much yourself. Best get it checked professionally.

Appreciate the insight. It was indeed the auxiliary battery. Shop confirmed it. Repair cost was 290€.

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