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Rust under interior side dash trim 2015 Model S 90D

I purchased a used 2015 Tesla Model S 90D back in May and installed a subwoofer and amp in it a month or so ago. While doing this, I had to remove the interior side dash trim to pipe some cables through. After popping the trim off, I noticed a ton of what looks like rust as shown in the pictures. I searched the forums but couldn't find any similar posts. Has anyone else seen this? I have an appointment mid-November (out of town until then) at the service center for a lightly rattling sunroof after a repair to it so I added this rust information to have them look at it during the same visit. I'll respond here with what they say.


- John

SoCal Buzz

Early Adopter
Supporting Member
Oct 9, 2018
OC, Calif.
That's an interesting place for rust... I believe that part is one of the few steel vs. alloy components in the car. It's a large part that extends all the way across the dash and supports the MCU / screens and steering unit. Given it's not exposed, it's likely not to cause any real issues with further degradation. Good thing it's covered!

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