Lexus LC Hybrid Remote Locking Issue

My 2020 Lexus LC hybrid is showing some odd behavior. Mileage is at 232992 km. The system is throwing an error, and the remote locking/unlocking is completely unresponsive. Strangely, I also can't start the engine without the key physically in the ignition. Suspect it's related to the bumper antenna, possibly a faulty cable or connector. Has anyone encountered similar issues?

4 comment(s)

Whoa, that's a weird combo of problems! I've got an LC too, and had something kinda similar happen last year. My keyless entry went bonkers, and it turned out to be an antenna mount issue causing signal interference. Was your car radio also acting up at all?

Interesting. No issues with the radio that I've noticed. Was your error also related to the bumper antenna, or a different antenna altogether? And was it a straightforward fix, or did it involve more extensive troubleshooting?

Yep, definitely the bumper antenna. After a bit of testing the workshop replaced a defective plug. It was causing all sorts of weirdness with the security system. Honestly, with those symptoms, I'd recommend taking it to a trusted mechanic or the dealership. Electrical gremlins can be a nightmare to chase down yourself.

Appreciate the insight. Sounds like a visit to the shop is in order. I'll post the diagnosis once I have it. It was a defective plug at the bumper antenna, the repair cost 95€ Thanks again!

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