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I have a Hisun EV1. I'm finding it a great asset - after a few teething problems which included a very poor manual that didn't even explain where the charger is located (under the front of the vehicle), no cover cap for the charger input, allowing for mud and dirt to enter where the plug goes, and the big one: a charger cable requiring a 15v power socket and, subsequently, either an electrician or a 15v converter before I could even charge it (extremely inconvenient for someone living on a remote property with no transport).

I have one other issue that I haven't seen addressed by other owners - when I switch it over to 4WD,  it has a loud thumping that happens for a few minutes - either while driving in 4WD, or once I switch it back to 2WD.

Is there something I'm doing wrong or a simple fix to prevent this thumping? It sounds like something is potentially going to break, and I crawl back to the shed. After a few changes from 2 to 4WD and back again it subsides.

I would love some advice on this thanks

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