Hello Lexus owners,
I own a 2016 LX 570 and am new to this forum. The LDA malfunctioning issue (attached pics) still exist after I took it TWICE to the Lexus dealership in Houston, Texas. They changed the LDA system twice and the message still keeps coming back over and over. This time I took to another Houston based Lexus dealership and they are currently looking into the issue.

Is someone else having a similar issue? Please share your experience and the details of the diagnosis. Thank you in advance.

 

i have no idea.
have you recently hit anything with your bumper? there are all sorts of sensors built into the front of that car

 

I recently have the same message on my 2017 LX. It was the steering wheel vibrating motor going bad. Luckily my vehicle was still under extended Lexus warranty. Otherwise it would have cost me around $1100. Talking to tech who fixed it, the motor replacement takes about 3 hrs to replace.

 

never been in any accident. Thanks!

 

Thanks! Will update the technician at the dealership with this info. I have the extended Lexus warranty as well, bought with the Certified Lexus LX570 purchase.

 

Hey did the message ever came back after the steering wheel vibrating motor was replaced?

 

It's working perfectly fine after motor replacement.

 

Please see attached video where I have also noticed the steering wheel shaking/rattles more than normal. Any thoughts?

 

are you still on OEM Dunlop tires? My vehicle used to shake a lot too on these tires. Ever since I changed to Toyo (not my first choice, but that was the only tire available in US last year other than OEM as all other were OOS), it is driving extremely smooth now.

 

Sorry for the late reply
The weather is warmer now and I don't see the AHC message anymore and when I manually lift it. It works fine on all three levels.
What is the code scan tool you have? how much does it cost? do you sell them on Amazon? and factory Toyota TechStream software how does this software help?
Can you give more info

thanks

 

I just left it there unfixed to this day. However, I did have my dealership fix the AC in 2023. It costs $3500. On the previous year back in 2022, I paid over $1k to fix the AC because it blew only hot air. Last week, my water pump, thermostat and driver belt went out. It cost me $1,250.

 

Is there a way to completely turn off the lane departure vibration? I know it can be switched to audio; but I would prefer nothing. Thanks

 

I don’t know how to turn it off, but it is not feasible for me to fix it. I just left it there unfixed.

 

Recently. I've been getting this malfunction message. I have a 2017 IS200T. I feel no vibrations. Initially I just turned the departure alert function off on the steering wheel, then turned it back on and the message disappeared -- but would return maybe some days later. Today I just turned it off. Is it an essential function? I'm out of warranty and not inclined to spend big $$$ unless it is truly important. Is it?

Edit [next day]... Today I started the car and the departure alert function was still off. At idle I turned it on. Then I pressed the appropriate button on the steering wheel for about 4 seconds to turn it off again. I then drove 6km to a store. An hour later I drove to another store. 15 minutes later I drove home. All of this time the malfunction alert was off.....

Is there any danger if I just leave it as it is - permanently?

 

I had this problem on my 2016 Lexus LX multiple times, and the Lexus dealership eventually diagnosed the problem to be the steering wheel. After replacing the steering wheel Jan 2020, the problem has never returned.

SERVICE: NON WARRANTABLE OPERATION CODE
DESCRIPTION:~|~C/S VEHICLE HAD A NOTIFICATION THAT STATED "LDA MALFUNCTION: VISIT YOUR DEALER." LIGHT HAS RETURNED BUT HAS SINCE TURNED OFF. PLEASE CHECK AND ADVISE. REFERENCE R.O. 561341 ~|~C1A74 STEERING VIBRATOR SYSTEM MALFUNCTION. CREATED TAS CASE (TA200230235) ADVISED TO REPLACED STEERING WHEEL. ~|~REPLACED STEERING WHEEL. TEST DROVE VEHICLE TO CONFIRM REPAIR.