Lexus LS Parking Heater Issue

I'm having a weird issue with my 2019 Lexus LS hybrid. The parking heater won't activate, and I'm getting an error in the system memory. I'm thinking it might be the heater core or maybe a temp sensor but not sure where to start. Has anyone run into this before? Car has about 200k km on it.

4 comment(s)

I had a similar problem with my LS. Check the auxiliary heater, could be the glow plugs. Common issue, especially with that mileage.

The glow plugs on the aux heater, huh? Okay, that's helpful. Was it a pain to diagnose, and were there any other symptoms besides not starting?

Yeah, those glow plugs. No other symptoms really, just wouldn't kick on and threw an error code. Honestly, I just took it to a shop. Saved myself the headache. They confirmed it quickly.

Roger that. Appreciate the insight. Looks like I'll be booking an appointment. Turns out, the diagnostics confirmed the glow plugs were shot, repair bill came to 440€. Thanks again!

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