I don't own this model, but it should have a servo that requires an electric signal to engage and disengage. It may not be getting the correct voltage or any voltage at all. Locate that harness and the plug. Is a voltmeter to see what you're getting
Someone else with this same model and has personal history with it may come along, too
I'm willing to bet it's going to be a simple thing.
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Kandi Technologies Group, Inc. (康迪) is a Chinese manufacturer of batteries and electric vehicles. The company is listed on the NASDAQ stock exchange under the ticker symbol KNDI. It was founded in 2002 in Jinhua, Zhejiang by Hu Xiaoming.
https://www.bbb.org/us/tx/dallas/profile/electric-vehicles/kandi-america-0875-91070301/complaints?page=2 Sent from my motorola edge plus 2023 using Tapatalk
TxDoc's post in 2017 Massimo 500 that is locked in 4 wheel drive was marked as the answer