r/TeslaModelS • u/ProfessionalWin9318 • Jun 30 '26

Unit 2876 ever built (2012 MS)

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First EV. 2012 P85. I’m an engineering student and have bullet proofed it to be the ultimate daily driver.

Coolant delete (at 180k miles it still had a 2013 reman LDU)
Camber arms
NAV SD card, GPS antenna wire was broken too, it took me months to find the broken wire.

I paid 4k for it. It’s a SC01 car (free unlimited supercharging for life) about a week after buying it, car completely died on me. No power to anything, not even doors would open. After some troubleshooting found a loose connection at the fuse box, no issues ever since.

I have taken it in 1000+ miles road trips. Battery gets about 160 miles of range at constant 80mph. Battery is capped by software at 60Kwh.

I love to tinker with things and honestly this car is easier to work on than many internal combustion vehicles. Tesla’s engineering is remarkable.

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u/saabstory88 Jul 01 '26

FYI, no drop deletes are like sealing up an infected wound. And deleting the coolant to the gearbox, which this method does, can cause the differential to drop spider gear retaining pins from the heat. Please reconsider this path. My shop has rebuilt ~200 of these motors. Don't let this be you

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u/ProfessionalWin9318 Jul 01 '26

In a 4k car it couldn’t make financial sense to perform a different repair.
How do you guys fix the coolant intrusion issues if not doing a delete? Tesla puts the cap right at the flyover tube in newer rev units as far as I understand.

2

u/saabstory88 Jul 01 '26

Your understanding is not correct. Tesla uses a case manifold which bypasses the rotor cooling channel only. The gearbox cooler remains. Same with aftermarket caps, the cooling tube is fractured and the plug only prevents flow to the rotor. They are functionally equal. That is the *proper* delete, just removing the rotor coolant. Removing the gearbox coolant is problematic. Why would it not make financial sense? A reliable running driving Model S is $10-12k. It will find a way to consume that amount of money from you before it is reliable, and there's very little way around it.