Liftgate Acutuator Replacement 2016-2022 RX350 - Info Inside
I’ll take a video later today and post it here so you can get an idea of what they sound like. Replacing them is super easy so if it bothers you, it wouldn’t be a hard swap. The factory parts are fatigue tested most likely 50,000 to 100,000 times. So, failure is unlikely.
You say that the factory parts are fatigue tested to 50,000 to 100,000 cycles? How do you know that? I would love to know somebody who has insider information on all this stuff. Were you part of quality control at the factory?
The power liftgate actuators on the RX are validated under ISO 16750 standards which cover mechanical vibration, thermal cycling, and electrical durability. The systems typically undergo 30,000 to 50,000 full open/close fatigue cycles at various temperatures and voltages to simulate lifetime use. I was being a little facetious with the 100,000 cycle number. I don’t work for Lexus
I would be more than happy to believe what you say if you have some proof. ISO 16750 standards and testing are recommendations and not requirements for car companies. I doubt that my liftgate has even cycled 2500 times in 9 years. I would hate to think what would happen after 30,000 or 50,000 cycles. If they tested these liftgates, I know they didn't test mine.
I would be more than happy to believe what you say if you have some proof. ISO 16750 standards and testing are recommendations and not requirements for car companies. I doubt that my liftgate has even cycled 2500 times in 9 years. I would hate to think what would happen after 30,000 or 50,000 cycles. If they tested these liftgates, I know they didn't test mine.
I changed mine out and provided a link to a great replacement. That’s the point of my post. It’s $165. Not a big investment or insurance to have some ready if yours go.
Unfortunately, nothing is 100%. It can’t account for water or dust getting into the strut/motor area, a gate that’s slightly misaligned so the actuator works harder than in the factory test, a weak 12 V battery so current spikes, or an early ECU logic issue (there is even an RX power back door inoperative TSB). Those conditions can push the real world load well above what the actuator saw in the lab.
I changed mine out and provided a link to a great replacement. That’s the point of my post. It’s $165. Not a big investment or insurance to have some ready if yours go.
I changed mine out and provided a link to a great replacement. That’s the point of my post. It’s $165. Not a big investment or insurance to have some ready if yours go.
Water, dust and voltage spikes. Don't forget moon phases and high tides.
Last edited by jcg0324; Nov 10, 2025 at 07:58 AM.
I don't mean to be disrespectful to any members here in this forum, but if you make claims about Lexus systems being tested for 10's of thousands of times before they are installed in one of our RX cars somewhere or sometime. That's fine. Where's the proof? Show me.
Google is free.
I will never disclaim someone trying to help but we are still waiting for your claims of 10's of thousands of cycles of rear struts? Where is the proof? There is no proof. And now you want to call each other names? How low do you wish to go?






