Tesla SDU purchase options?

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vwjim
Posts: 6
Joined: Tue Nov 17, 2020 2:13 pm

Tesla SDU purchase options?

Post by vwjim »

Morning,

I've built the battery boxes to hold the 14x tesla modules, got the DCDC / OBC / Orion BMS etc already, and designed as much of the motor mount that I can without actually having the motor in front of me. So the time has come to order the rear SDU.

I've left it rather late, as I would like to order it this tax year so its in this years accounts.

So I'm after a simple summary of what modifications are required to a rear SDU before it can be used and if they require any expensive specialist tool to perform the job. (ie so I can cost up buying a standard motor & fitting the EVBMW PCB plus any other jobs vs buying a motor from a company that has installed the EVBMW PCB or use their own controllers)

Thanks.
Isaac96
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Re: Tesla SDU purchase options?

Post by Isaac96 »

Minimal modification.
Take the 12ish bolts off for the inverter, remove phase cables, unplug connectors.
Then you take out the original board. (Few more bolts).
The difficult part appears here. You need to desolder the two current sensors which protrude from the original board, then solder them into the EVBMW PCB.
Then you just put it back together the same way.
Zero EV in their Boxster series has a video with most of the process, if you watch through the 5 videos (good content anyways) you'll find the relevant part.

It's a pretty simple process if you're comfortable with a wrench and a soldering iron.
vwjim
Posts: 6
Joined: Tue Nov 17, 2020 2:13 pm

Re: Tesla SDU purchase options?

Post by vwjim »

Isaac96 wrote: Tue Mar 29, 2022 8:12 pm Minimal modification.
Thanks for the reply.

I've a mate who did soldering as a job, so might give him that section just to take advantage of his skills if I went that route.
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