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If the parking sensors on your Lexus RX350 are not working, the first step is to ensure that the Park Assist feature is activated. Don't be embarrassed if you overlook this, as it's often the simple things that can cause issues. The button for Park Assist is easily bumped, so check that you've pressed the long black button with the "P" on it, near the Auto window button. Once you've verified that it's turned on, the next step is to inspect the A7.5A fuse labeled GAUGE in the driver's side fuse panel to make sure it hasn't blown.
After jump-starting the dead battery on my 2020 Lexus RX 350, the parking sensors suddenly stopped functioning. I attempted various troubleshooting methods without success. However, after taking the car for a brief drive, to my surprise, everything returned to normal. Although I'm unsure how the issue was resolved, I am thrilled with the outcome.
The parking sensors on the Lexus RX 350 might not be functioning correctly if they're turned off, if there's a blown fuse, or if they're blocked by debris.