this post was submitted on 12 Mar 2026
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Electric Vehicles
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AFAIK, all EV6's, IQ5s etc have the ICCU issue, which appears to be under-spec MOSFETs . One tally on a forum I'm on estimates 2%-10% of owners have experienced failure. However, the 10yr/100k-mile electric warranty covers it.
There is a new part number last month for the ICCU (from old 36400 1XFA0 to new 36400 1XFA0A), so there's some hope that it may be sorted. Maybe your dealer can verify that a new EV6 has the new ICCU part number (I've also heard that it can be read via CarScanner).
We are at 80k miles, so hoping either ours pops within 20k, or else there is a recall or class-action.
Heh. Wait for a humid day, take it around a track to stress it out, and get it to pop in-warranty.
A new part number is good to know. That way I can ask about it when buying it. We are planning on buying used from a dealer so they should know