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My 2021 RX350 wouldn't fully start and displayed warning message stating "low braking power", so I thought that the programming was preventing the car from starting due to a braking issue.  But, the car wouldn't turn off, either.  It stayed in "ignition ON" mode.  I was parked inside a parking garage of an airport on the 3rd floor and it was almost 8pm.  I called Lexus roadside assistance and spoke to 4 different persons who could not identify what was wrong nor why the ignition wouldn't turn off AND they couldn't get a tow truck into a 7 ft max clearance airport parking garage.  At this point, all of the various alarms are flashing on the dashboard in a continuous cycle.  I'm on the East Coast, so I started calling Lexus service dealers on the West Coast since it would only be about 5:30pm.  I spoke to 2-3 in CA (no one new how to get the car to turn off) and 1 in OR who said to disconnect the battery, but I had no tools to do it.  I considered getting the car pushed out of the parking garage but with two down ramps and messaging stating that the car essentially had no braking power, it would be unsafe.  Two hours later, sitting in my car at the airport, a warning message stated that the vehicle was going to shut itself down due to low battery.  The next morning, I called one of our two local Lexus dealer service departments.  The first one took a message and never called back (still haven’t heard from them).  The second service dealer, Lexus of Jacksonville FL, took my call, found an advisor who knew from experience that a Lexus with battery issues will freak out with all sorts of error messages.  But he has never heard of a vehicle that couldn't be turned off.  I was stuck in the airport for 3 hours, and I live one hour away, so this was quite an ordeal getting transport back & forth twice.  I called AAA (not Lexus roadside) to come to the parking garage the next day and they were able to jump the car, and I drove it to the dealer.  They identified a bad battery (3 year old car with 26k miles) and replaced it under warranty.  But this was a horrible ordeal.  Why doesn't the Lexus programming with all of its bells and whistles, display a message that the battery power is low or the battery needs replacement, rather than telling me the car has faulty brakes or other system errors!!  This is POOR programming and messaging.  And, why wouldn't the vehicle turn off???  Lexus - - this is a big issue, based on the numerous battery issues reported and the faulty programming that needs to be addressed.

I have the same question. Had anyone replied to this? Or does anyone have the answer?

Hello. The links don't seem to be active. Is it possible to reactivate please?

I have been driving around for a whole year with this same problem....and with mine, the door open light on my Lexus RX350 continually says the hatchback is open, even though it is closed and latched.  I will try this fix and let you know if it works.  If it does....I greatly appreciate this post and I thank YOU in advance.