Lexus LC 2020 Keyless Entry System Issues: Dimming Lights and Door Locking Malfunctions

Hey! I can definitely relate here. Had a similar situation with my 2018 Lexus GS. Turned out, the problem wasn't with the keyless entry system, but rather a defective cable connection to the outside door handle electronics. Threw me for a loop when it first started happening for sure. It wasn't an end-of-the-world situation, but it was a serious enough issue that needed right away attention. I hauled her to my local garage and they did a pretty intensive repair job. They had to remove the door panel to access the issue. Upon proper check, they confirmed that the door handle electronics were all wacky due to the defective cable. Got it fixed thereafter and did not face the issue again. Your case might be different but getting your outside door handle electronics and cable connection checked might save you some serious head-scratching. Cheers!

Yo there! That's a fascinating story. Didn't anticipate that a rogue cable could create such a hassle. It reminds me of a similar issue with my Lexus LC. Outta curiosity, do you remember ballpark how much you paid for your repair job? And have you spotted any related issues pop up since then? Appreciate the insights. Cheers!

Hey! You're right, a faulty cable can really mess things up. As for the repair costs, it set me back around 170 Euro to get that sneaky cable fixed - somewhere in the ballpark of what you'd expect. Surprisingly not as hefty as I initially thought, though it all hinges on your mechanic's rates. Since the mechanic gave it a thorough look and fixed the cable connection to the outside door handle electronics, I've had no issues with the keyless entry system - it's been smooth sailing! Locking/unlocking works like a charm. So yeah, in my experience, once that rogue cable was taken care of, all related problems were gone. Hope this helps! Safe driving. Cheers!

Just brilliant! It's been quite helpful hearing your experience with this issue. You've given me a good direction to look into and a rough price range I should keep in mind. I’ll head off to my mechanic with this and get our Lexus checked. If I've been dealing with a rogue cable too, let's just hope it doesn't act up again after getting it fixed. I’ll keep you posted. Cheers for the advice and happy driving!