Electric Goat
Well-Known Member
- Joined
- May 31, 2021
- Threads
- 14
- Messages
- 925
- Reaction score
- 1,898
- Location
- Twin Cities, MN
- Vehicles
- '21 Mach-E GT & '24 BRZ
- Thread starter
- #31
@Mach-Lee Thank you, thank you, thank you so much for all of your help today. You ARE a rock star. I'm thankful that you're in Minnesota / Wisconsin area and were happy to help a fellow MME owner out.![]()
I went to help revive the Electric Goat today, but as you can see I wasn't successful. ? She had a persistent P0563 code in the BECM that kept coming back, so unfortunately that means it's new HVBJB time.
When I arrived the 12V battery was down to 11.6V, so I put my dual PL2320s on it and got system voltage back up to 13.5V. Scanned for codes and determined the P0563 code (System Voltage High) in the BECM was the cause of the SSN, which likely means the positive contactor is stuck. I tried resetting the codes and modules multiple times, following the steps in the service manual, opening the BECM service disconnect under the hood, and even banging on the front of the battery pack with a rubber mallet in a last-ditch effort to unstick a contactor. But she wouldn't budge. This P0563 code is mentioned in TSB 22-2178, which specifies HVBJB replacement.
I can confirm the dealer installed the recall software a couple weeks ago, and he said he never saw a SVS before the SSN popped up while L1 charging last night. So this is a confirmed case of a HVBJB failing without prior warning on post-recall software. Sounds like the contactor overheated with just a short pass and must have melted or welded itself closed after the drive. He is on the second HVBJB, this one failed with only about 4500 miles since the last replacement.
The garage did have very low clearance with only a 6' opening and was parked nose-in, but fortunately we were able to get it into emergency tow mode and pushed it into the alleyway so the tow truck could pick it up. I'm surprised they sent a dolly truck instead of a flatbed, but the tow truck driver loved the looks of the Mach-E and carefully got the front on the wheel lift despite the low clearance. He said his new flatbed was still in the process of getting licensed and approved. Having the high-current battery chargers to keep the battery topped up really helped out. I brought jumper cables and an extra Mach-E battery just in case the chargers weren't enough, but they did fine. It make it to the dealer safely.
I feel bad him, this is the second time he's been stranded, he has a newborn, and the Mach-E was their only vehicle at the moment. Hopefully Ford gets him rolling again ASAP.
While no one wants their HVBJB to fail, I'm happy that it failed at home and in my own garage instead of somewhere unsafe.
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