Our AC control panel W/O Nav, just stopped working , no power to front or rear controls. I checked all fuses and they are good. I read somewhere to do a reset by unplugging the battery negative terminal. That worked for a very short time. Started the truck lights came on then went off. In another thread they said the LCD control unit needs to be replaced. I thought I'd reach out before I tried that. Any assistance would be appreciated.
By D Eric
Curious how many Lexus owners have had a brake actuator failure. We have a 2013 RX350; we bought a new RX450, and parked the 350 over the holidays planning to sell. When I started it, numerous warning lights came on: the "Check AWD System" light, the engine light, and the VSC and Traction Control System lights. Upon taking the vehicle to our dealer, were we told that the brake actuator assembly needed to be replaced. The cost to do so was $3,855.12. I found there was a NHTSA recall on 2/12/2014 for this issue, requiring a software upgrade to avoid the failure of the brake actuator. The dealer advises that software was updated in 2015 - which obviously didn't work because the brake actuator still failed. Lexus is refusing to cover this, even though the predicted failure occurred anyway. If anyone else has experienced this, please let me know. I am preparing litigation on this issue.
I've searched pretty extensively and found several posts that are ALMOST the same as my problem -- but not quite...
My '96 LS400 runs very well and is well maintained. But I've noticed that when I go on a long trip (two hours or more -- it usually takes quite a bit more than that), my heat or A/C airflow fades and eventually quits blowing. It's not a coolant level issue -- it does the same with A/C as with heat. Different RPMs don't make a difference either. In order to get the control back, the car has to sit for a period of time (sometimes stopping for lunch will make it 'all better', and sometimes it requires an over-night stop.
Just driving around my normal daily life, it never happens -- so of course, I can never get it to my mechanic while it's acting up because I have to be several hours from home before the problem ever shows up!
It would be my guess that the problem is located in a control that directs an airflow 'door' somewhere. When the problem occurs, you can hear the fan running as normal (responding aurally to manual adjustments in fan-speed). But the air quits flowing from ANY of the vents. The air always comes from the correct ports (defrost, face, feet) when it IS flowing. But when the problem surfaces, the air-flow simply tapers off to nothing.
It's really maddening since this car is my preferred driver, and it's BEAUTIFUL for long trips -- except for this! If it's during the need for A/C, it's merely an inconvenience, as I don't mind driving with my windows down for a while. But when it's cold out (like on our trip home from our daughter's place more than three hours away last night), it can become a hazard, since I have no way to provide ANY airflow to the windshield, and keeping the windows from fogging up can become very challenging. (Especially with two adults and two dogs, like I had last night...)
Anyone else every experience this? With winter here, I really need to find a way to address this. But since I can never experience the problem except when I'm a few hundred miles from home, it's never practical to get it to my mechanic to examine things while it's acting up!
Thanks in advance for any advice or shared experience...