2018 Lexus ES Experiencing Inadequate Heating and Cooling Functionality

Hey, had the same stinker of an issue with my 2015 Lexus GS last year. Yeah, the AC was about as effective as a hair dryer in the Arctic, joke of a situation! Turns out it was the little bugger - the air quality sensor line that was playing up. Had to steer the old girl to the garage, mechanic took a good hard look at it. After some poking around, started mumbling about the Line/cable from sensor being defective. Apparently, it was feeding the climate control some baloney readings, hence the heater-cooler nonsense, if you follow me. In short, the mechanic had to replace the faulty line with a new one. But here's the kicker - it wasn't some roadside band-aid. The dashboard had to come off, and a few other bits and bobs. So expect your car to stay in the pit stop for a wee bit, alright? But once that was done, it was cruising again like nothing happened, no worries. So yeah, not something you'd ignore. Sort it out and you're in for some cool drives again. Good luck!

Hey, thanks for sharing your experience. Boy, that sounds like a right pain with the whole dashboard removal and all. Just my luck! Are you able to remember roughly how much all these shenanigans set you back? I'm preparing to take my ES to the shop and it'd be a handy ballpark figure to keep in mind. And since that fix, has everything been hunky-dory again or were there any other pesky issues that cropped up? Cheers for the help!

Hey, happy to help. So, by the time the mechanic was done with my girl, my wallet was lighter by around 95 quid. Yup, that's what it took to fix that defective line/cable from the sensor which was messing with the AC. On the upside, since she got out of the garage, the air quality sensor hasn't given me any more lip. It was a definite improvement and got rid of the heating-cooling skulduggery. The ride's as smooth as chilled beer on a hot day now. So, yeah, there's that. Dished out the cash, got the problem sorted, and it's been smooth sailing since then. So drop your ES off and brace yourself for a bit of a hit on the wallet. But believe me, it'll be worth it. Keep your chin up. Cheers!

Cheers! You're a lifesaver. 95 quid doesn't seem too steep for that peace of mind, especially considering the right mess it's been causing. Now that I have a ballpark figure, I can get onto booking it into the garage. Can't wait to have her running as smooth as yours again. Really appreciate you taking the time to share your experience. All the best!