Seeking Advice: 2002 Lexus SC Experiencing Dim Lights and Weak Battery Issues

Hey! I feel you. I own a 2005 Lexus RX and experienced some similar issues on it. The lights used to dim and even the battery gave me loads of trouble on the start-up. It all pointed to the same diagnosis; a Battery Temperature Sensor malfunction, pretty much as you've suspected for your SC. Last time when I took my car to the garage, the diagnostic test confirmed it had the defective sensor. The symptoms were similar, so your hunch might be on the money. It wasn't so much of a serious issue as it was an annoying one, causing the battery to act up at the worst possible times. The mechanic switched out the old sensor for a new one. Work wise, they needed to disconnect the battery, replace the sensor, and reconnect everything. It didn't take them more than a couple of hours. I gotta say, our Lexus models aren't too different, and if your diagnosis is correct, the sensor's the hidden culprit here. Not to worry though, it's a fixable issue. Anything electrical gives me the creeps too, but this one is nothing too serious. So, head up, you're on the right track. Good luck with the car!

Hey there, it's good to finally meet someone who had the same spooky battery experiences as I am having right now, haha. The diagnosis scenario you shared is almost identical to what I suspected for my old SC. But thanks for sharing your case, it steels my nerves a bit. Now, you've got me curious, though. Do you remember how much the replacement set you back? Did anything else pop up with your Lexus RX after replacing the sensor? Just trying to not get blindsided here.

Hey, how's it going? Yeah, don't worry, you're not alone in this spooky battery club! As for the money, the fix wasn't cheap but it was certainly worth it. It cost me around €315 to get the Battery Temperature Sensor swapped out. But hey, no more creepy flickering lights or terrifying faulty starts since then, so consider it money well spent. Thankfully, nothing else cropped up with my Lexus RX after the sensor replacement. It's been doing great since that, behaving itself and all. So get yourself prepped. Once you've sorted out the defective sensor, I reckon your SC should work like a charm again. Best of luck with it!

Ah that's comforting to hear. A part of me was worried that this might be the tip of the iceberg, you know? But hearing about your RX behaving well post-replacement gives me hope for my old SC. The €315 fix isn't a walk in the park, but well, for the peace of it being over, I'd say it's a fair trade. For one less thing to worry about - yeah, definitely worth it. You've been great help. Thanks for putting my mind at ease, really appreciate it. Now, off to the mechanic's I go, wish me luck. Cheers!