2023年10月17日 · Last year I posted a detailed technical analysis of the HVBJB problem that has affected many. I suspected that software cannot fix a hardware design problem. Let's look at the schematic of the HVB Junction Box in our MME: The current flows from the positive battery connection (+380V) though...

2022年5月27日 · HVJB Failure; BECM Failure; High Voltage Battery Issue; The problem: In 2021 we had a few members starting to report that their cars would say "stop safely now". It was attributed by the forum members as something related to the cold as it was mostly happening to people in colder climates.

2025年1月30日 · Today I’m going to pick up my 2021 Mach-E extended range, after the 7th time of replacing the hvjb. The “old” hvjb replacement parts broke down after a few months. Then the recall came in where ford said it wouldn’t break anymore. There thing is: this part keeps breaking after a week of regular driving, sometimes in a traffic stop.

2022年8月5日 · A permanent solution would be a complete re-design of the HVJB with better cooling and temperature monitoring. There seems to be a slight issue, so this would be the best solution. A patch would be to replace the contactors in the HVJB with a better version. This is what the repair does but it does not guarantee the problem from re-occurring.

2022年8月7日 · The part number on the actual part is NK48-10C666-AB. It is normal for the part number on the box and the on the actual part to be different, although they share the same base (10C666 is the base part number for a HVBJB).

2018年3月14日 · I'm guessing the STAT will be something like 0-5v as a signal to the controller (outside the Front HVJB) that the heater is actually responding. Since the heater response is likely to significantly lag the controller instructions. The control scheme would be something like 1) update the PWM, 2) wait for the STAT to get into the expected range.

2025年1月30日 · The hvjb is an easy 2500 bucks if you include the workshop costs. By taking the extra warranty for 1000 bucks i “saved” like 16000 bucks allready. When the car performs normally I love it but the amount of fixes and no permanent fix …

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2023年10月18日 · (assumed HVJB with the alerts and my app messages and reduced power etc..) And then they will make a mad scramble for the parts. The manager confirmed that it will either be a previous HVJB out of warehouse, likely from the US, or the new recall component depending on timing and where Ford is at with that new recalled part. Which I'm pleased with.

2023年9月20日 · The trend of "start a new thread" every time a single HVJB experiences failure makes this problem seem way more prevalent than it probably is. A better solution would be for each person to tack onto the existing thread(s) when they have a confirmed failure.