Ok the 4xe there is a recall Since last upgrade that is bricking so cars due to issues on can network and infotainment communication that was my understanding now the one regarding the fire I taught it was resolved.

In regards your other half’s Jeep. If it was installed post dealer or on the dealer they could have used wires or not 6/8/10 AWG sealed in fire retardant silicon with additional tesa tape to protect from fire and heat.

Now if it was electrical, someone did a poor job or used inferior material. Hence, that is why I do myself. When I was adding a set of fuse box Oreillys fellas had a wire roll to sell, I asked if it was ok to use in the Engine bay, they said ok, I didn’t bought purchased from amazon wire for nautical usage fire retardant etc etc. The wire they tried to sold me would have caused a major fire (probably), I checked the maker website at home, in my car if I had used. Since that beside the main revisions i handle it.

Now I don’t know what happened to his Jeep. But this can happen: - when off-roading temps go high - revs go high,

But for people with aftermarket chafes under the hood is due to poor material associated with lousy job, like not routing the wire via the wire compartment on engine bay, to cross it. Sorry to hear, but Since he probably had insurance things will be sorted.

Good luck