Hi, There is a recall on some of the J7 showing on Auto express as below due to a wiring harness clip..maybe check yours to see if it is one of those?
Jaecoo has issued a recall for thousands of its Jaecoo 7 SUVs in the UK following an electronic issue.
Specifically, the problem revolves around a wiring harness clip connected to the car’s Electronic Control Unit (ECU). This, according to the European Union’s Safety Gate website, has not been attached correctly in some vehicles, resulting in engine warning lights and potentially even causing the car to randomly stall..