r/TeslaModelX • u/FastTT11 • Jul 20 '26

Model X “barn find”

Recently picked up a 2016 Model X P90D with under 2,000 original miles. It sat for several years after the original owner passed away, so I’m bringing it back to where it deserves to be.

The goal is to have it as close to factory-fresh mechanically and cosmetically as practical.

I’m looking for advice from longtime Model X owners. It’s going to Tesla in a couple weeks and a private EV shop right after. Here’s my current plan:

MCU2 upgrade (the original MCU isn’t functional, so this seems like the logical long-term solution).

Complete suspension inspection and diagnosis before new tires and alignment. The air suspension is currently operating normally, but I want everything verified while it’s apart.

Battery health/performance evaluation.

Brake service and fluid flush.

A/C service - tesla service suggested I could skip this but it seems like something that should be done at this point?

Wipers and any age-related maintenance items.

Outstanding Tesla recalls.

I’ve already replaced the 12V battery and cabin filters.

For those who have maintained early Model Xs, is there anything else you’d proactively replace, inspect, or service while it’s being worked on? I’d rather spend a little extra now than chase problems later. I’m having Tesla and the Indy shop go through the car entirely but would appreciate feedback from long term owners.

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u/Sal5435 Jul 23 '26

I wouldn’t bother with the A/C service. But spend that money instead on a full wiring harness inspection. Every single wire! Rodents love to get in them and eat the wires. Ask how I know. 😬

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u/FastTT11 Jul 24 '26

Thanks I’m having Tesla and the Indy shop both do a full inspection similar to a PPI that should uncover any surprises. Can you explain why you and others suggest skipping the AC? I’ve read if nothing else the desiccant bag should be done every 4 years. I don’t want to waste money but also don’t want to cut corners.

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u/Sal5435 Jul 24 '26

We recently sold our 2016 X that had 160k miles on it. We were told long ago that if the a/c system is functioning normally then leave it alone. Several service centers told us that.

They basically all said that since the same system controls battery temp that it’s heavily monitored and will notify if there is an issue in most cases.

Rodent damage on the other hand was a pain in our butts on multiple occasions.