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Found 7 results

  1. Hello All, My car just developed interesting fault. Surely expensive to fix, but interesting in a way to investigate and nail the real cause. So to start with - few days ago (like Tuesday this week) my A/C started making some noise ... like squeakyish/grinding noise, but it was intermittent (happened like 2-3 times altogether). I had a service coming up 2 days later so didn't really bothered to investigate, nor had an opportunity. Thought, "if there was something obvious Lexus service will pick it up" and if not I will take a look over weekend. So Lexus Woodford did service an MOT, got all green except one amber. They said my drilled rotors are far too lavish, hence they put amber to accompany them (to clarify it is amber for "non-genuine front rotors and pads", they are Mintex drilled discs with Brembo OE-equivalent low dust pads - will post new thread in Modifications forum). The rest are all green including "Aircon / heating / ventilation" as below: On my way home from the dealer, I have realised my windows are starting to steam-up and the air from A/C is getting hot... clicked on "Windows Defogging" and the realised that A/C light is flashing > stopped by traffic lights and clicked "Off" and "Windows Defogging" again to restart A/C. This resulted in the weirdest thing ever in any car I have owned > the engine RPM started jumping and when I have clicked on "Off" again the engine cut-off as well (see video below). You can notice A/C light is solid while RPM is jumping. From under the bonnet it looks like compressor clutch tries to engage unsuccessfully or that compressor is actually completely stuck. Actually, I can see little sparks coming out of the pulley (see video below - sorry it is bit dirty ... Lexus panels does great job keeping all that dirt and rust inside). It only happens on idle, if I am cruising at speed then A/C light starts flashing straight away. Now based on the fault description I have found that this fault can be caused by faulty compressor clutch coil. I do believe this is not the case, because faulty coil would result in flashing A/C light and as well would fail to engage compressor, but in my case it seems it is trying to engage compressor and after multiple failures gives up and starts flashing. If I drive at speed trying to turn A/C results in flashing A/C light straight away - no impact to RPM etc. So my second guess would be that compressor itself is mechanically faulty/stuck and engaging clutch causes stress to the belt and RPM starts dropping. This would be sad news.. as replacing compressor would cost 10x more than just replacing coil. Any other thoughts? As well wouldn't you expect Lexus dealer to pick up such faults? I am not joking .. it happened 3,5 miles away from dealer after “All Green verdict”... Any help or opinion would be greatly appreciated, thanks
  2. Hi for last few months i had weird noises coming from drive belt area, specially on idle. Was trying to find someone with same fault, but couldn't so I maybe save someone trouble here 🙂 So I made small fault finding and found out that bearing on air con compressor has gone, start making noises and slowly start locking (can smell slipping belt). As I don't have time now to play with air con I measure belt and bypass. Belt what's you need to do it is 7PK1378 (tested only on 220D 2AD-FHV) when I found time and parts to fix ac I will make some step by step how to do it, maybe even on a car 😉
  3. Hi folks, calling on your technical wizardry.... On Tuesday evening, I started my engine and it immediately started to hunt with a rev range of about 200. Drove off thinking it would clear as the engine came up to temp and it did. Today I noticed that my A/C light was flashing. I pressed it and immediately the engine began to hunt again. I turned off the A/C and the engine stalled. I tried it a few more times with the same result. Just to make my day I just handed £1100 over to Lexus to get my car through it’s MOT but that’s another story. Any thoughts? Should I be looking to replace my pride and joy. Best wishes to all. Mike ‘56 plate is250 SE L 140,000 miles
  4. Hi there Lexus owners!! I have a little bit of problem and i need your help. I want to disinfect my IS300h-s air conditioning system, and i read before that the most effective way to reach the evaporator is to lift the car up and spray the disinfectant through the condense water drain pipe. Can someone please help me to locate the pipe? Thanks a lot!!
  5. I noticed that my A/C on the 430 wasn't blowing cold recently when we had that warm spell. The A/C was regassed just a couple of months ago by Lexus when I had it serviced - not sure if they test functionality at that time or not. Was going to get them to have a look, but then had a weird experience today where the A/C selection was just greyed out on the LCD screen. Couldn't enable or disable it and the temperature controls didn't function. After a short while though they sprung back into life. Still no cold air, but certainly something odd going on. Anyone come across anything similar? Suggestions for what to check before I get it looked at?
  6. Hi, I'm looking to try to diagnose a problem with a 2010 RX450h. Just recently the A/C motor has started to run all the time even when stationary and the car temperature is below the set temperature. When I press the start button the A/C motor starts up and the cars no longer silent when stationary. I've turned the A/C to "off" and the motor stops and all is quiet again. Any ideas - is it a sensor that's failed. Thanks for any help.
  7. Just had my air con serviced - took about an 1 1/4 hours. Fascinating to watch how it's done. And now feel ready for the Summer. ( Richard Bell from AutoAirCon did it - really pleased with his time keeping, attitude and price )