- Joined
- Sep 8, 2024
- Messages
- 161
If I were you I’d try and get the car up and running before doing anything else. You’re right, the quickest way forward is to change the faulty IGBT (maybe all 3 for good measure), there is a good chance this will fix the issue.
Based on a recent case of temporarily swapping coded EV-ECUs between cars, chances are slim that a VIN conflict will brick it permanently, you’ll get a relevant DTC and the car won’t (?) go Ready.
MCU faults seem rare, the two instances with blown IGBTs seem to be caused by overloading the circuit.
My motto generally is ‘never to mess with a working system’ but if you’re willing to investigate further, wait until you have your Lexia/Diagbox setup ready and then try out the ‘cloning’ function of ECUs as @kiev mentioned.
Sage and sound advice. I'll first get the car up and running by swapping the IGBTs.
The family needs to see me succeed with this before possible failure from experimentation. Will do.
FULL CHIP Lexia cable incoming in the next week or two. In the meantime we will get a replacement MCU or two on order starting tonight.
Thank you guys.
By the way, I tested the MEIDEN ECU capacitor tonight when I got home. 150v on all four sets of leads on it. Not sure that that's gone down since yesterday as it's a 450v capacitor. I'll check it again tomorrow and see if it's draining on it's own. Have it protected now. Got lucky I didn't shock myself throwing it around like that. Also surprised it didn't dissipate when I threw it on the MCU cover a few times and let it sit there.