Fix Lexus LS600h Error Codes C1A05, C1A40, B2090 in 5 minutes for only $30
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- Опубліковано 27 чер 2024
- Follow me on instagram @swisscarguymario for more content
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My 2008 Lexus LS 600h was misbehaving. The adaptive cruise control was giving me problems. Every time I turned it on it would immediately give me the error message "Check Cruise Control Have your vehicle checked by a dealer Have your vehicle checked by a dealer" and disable the ACC.
Scanning for codes I got C1A05, C1A40, and B2090.
If you're experiencing error codes C1A05, C1A40, and/or B2090 on your Lexus or Toyota car, it's likely that the issue is related to the brake light switch. The brake light switch, also known as the stop lamp switch, is a crucial component that sends signals to the vehicle's computer when the brake pedal is depressed. In this video, I will show you how to replace the faulty brake light switch on a Lexus LS600h with a new one, using the correct part number for that car (84340-30110), to fix these error codes. The brake light switch is cheap at around 30$ and very easy to replace by anybody without the need for specialized tools.
The process of replacing the brake light switch is relatively straightforward. First, locate the switch on your car, which is typically located near the brake pedal. Once you've located the switch, disconnect the electrical connector from the switch. After that, remove the switch from the brake pedal assembly.
Next, install the new brake light switch. Make sure that you have the correct part before installing it. Reattach the electrical connector to the new switch and test the switch to ensure that the error codes have been cleared.
Additionally, I also wanted to share that I recently had an issue with my car's heating system. It would only heat intermittently and I found out that it was caused by low coolant levels. I managed to fix it by adding half a liter of engine coolant for just 4$. It's always worth checking the levels of your coolant and other fluids before taking your car to the mechanic, as it could save you a lot of money.
00:00 Previously
00:31 Introduction / problem description
03:22 Bodge wires discovery
03:56 Brake light switch replacement
06:17 Test drive
12:28 Intermittent heating fix
14:46 Interaction reminder & end - Авто та транспорт
Ahh, bodge wires that connect to the footwell lights! What do you tink was installed there?
I had the same problem, your adviced helped my 600h with ACC working . Thanks Mario
Well done Super Mario, thank you for showing this video, the extra wire mess was most likely to power a dash mounted, radar/laser detector.
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For everyone getting hybrid error codes.
More than 90% of errors in the hybrid system on the LS600 are a sensor in the DC/DC converter that detects moisture from water in the trunck, a problem if trunk stands open when it rains over longer periods. People are tricked into replacing the DC/DC converter when the error goes away after some days when getting the water out from where the wheel is located.
Aha, now I pretty sure what these "what-the-h..-is-this-doing-here sensors" are for, which I found in the trunk after removing all the interior to make soundproofing in my GS 450h. Very good to know about this because moisture in the trunk is always more or less a problem for all sedans.
Important lesson learned. Just try to do the easy fix, and take your time.
Bravo Mario!
And have some more confidence in your skills. Apperantly the issue is fixing right!
👍
I can contribute with a story for my GS 450h, regarding warning messages and illogical underlying causes. I removed the cooling fan for the high voltage battery and had also removed the ML amplifier. It was to inspect and clean the fan in connection with tearing out all the interior of the trunk for soundproofing.
Had to start and turn the car over in the garage and thought that error codes would probably be set for the absence of the cooling fan and the amplifier. It should be added that the 12V battery had been disconnected during the entire time I worked on the car.
Plugged in the 12V battery and the car starts as usual, but with a series of warning messages: "Check Hybrid System" was logical. But "Check PCS Collision System" and "Some kind of warning for AFS lightning" didn't feel good and logical at the moment. The seats and steering wheel had also lost their memory.
The amazing thing was that everything went back to normal after the fan and the amplifier was reinstalled without the 12V battery connected. Not even any new error codes and the old historical also remained!
You are a life saver. I have exact problem as you do, DTC C1A40, B2090, C1A05 on my 07 LS600HL. Many Thanks
Update: Yes my problem has been fixed with a new brake switch. I think it also worths mention that the brake switch also controls the illustration of brake lights, which is also linked to the holding of cruise control by depressing the brake pedal. Therefore, over-tightness by screwing too much may cause the brake light NOT GO ON when lightly depressing the brake padel. Also, the cruise control may not cancel when you brake too gently. Your car would decelerate but once you lift the brake the cruise control will accelerate the car back. It is advised to calibrate the brake switch by checking the way brake lights goes on. You would want to see the brake light goes on when you lightly depress the brake pedal, as well as the brake pedal giving you a linear resistance feedback.
Finally, Mario's back! Let's make a delicious meal!
You know what, I have an idea for a food preparation clip. Let's see if I can make it.
Ok, the guy is called: The Car Care Nut.
You can ask him questions.
Good luck.
Felicitations. Very quiet car!
You know you are not supposed to be adding coolant too often when was the last time you checked it? I don’t know if the 600 engine suffers from the valley plate leak issue and also check the radiator it’s known to fail
Oops 🙊 I just watched it all the way through lol.
Well done 👍
What scan tool do you use? Is it expensive?
A cheap cable from aliexpress with a sketchy version of Toyota's Techstream Software.
Lovely fix 🏆
How are the Caddy and the Knight Rider doing? 😊
WIP. Once the roads get less salty, the Trans Am will get some attention. The Caddy needs some more (professional) work on the cooling system.
Would this part fit the 460? I have the B2090 fault code, but I think it has to do something with rear radar sensor as it gives me U1118 code too. I was lazy to this day to remove rear bumper and check the sensor itself, but maybe there are multiple causes of the codes.
I think it's the same on the 460 as that has the same braking system. Of you can get it locally, it will probably be cheaper than what I paid for it. So, cheap enough to give it a try.
Hi,
A video about Groom Vline2 will be interesting. I want to add one to my IS250 from 2007, is worth it?
Thanks!
Coming soon! Conclusion: yes, it's good. But in my opinion it's too expensive for hardware that was already quite low end in 2018 and Android 8.1 (Android 13 is the most current version).
I was getting the PCS error on my LS460. That turned out to be a failing Xenon Bulb.
That is really insane!
You are like father to me ❤
I feel sorry for you. 🥲
Man that air outlet is one of the best thing for men. #coolnutzzz
can we get a "total cost of ownership" update?
At some point, but to be honest, I've spent very little money since the last video. The Lexus is due for its state inspection in April, however. Maybe that will reveal that some investment is needed.
cabin air filter is upside down
I have the same probolem in my LS600h 08.
I will try to fix it that way....
BTW Did you notice any work of face infrared camera on sterring wheel ? It supossed to detect tired driver face....
Tried a couple of times to fake me dozing off but nothing ever happened. 🤷🏻♂️
@@swisscarguy I was doing the same, closing eyes or turning head off road, no reactions
I’m still looking to buy one in good condition and low mileage.
Try asking the (Toyota) car guy. 🤔
I can see the allure of a low mileage car. But on a Lexus, if the condition is good and it has been properly maintained I don't mind higher mileage. It usually makes the car much cheaper to buy and not really less reliable.
If you want good a nice selection look at Japanese auctions. The LS is almost as popular as the IS which is incredible.
Hi mario
Fix your Car mario, its not that hard
Apparently, I did. 👋🏼
No one drives a Lexus but you 😬
Where is that ugly Cadillac you were going to fix up?