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Most likely bumping the sprayer didnt have anything to do with the ABC and malfunction light/indicator unless the sprayer got some electronics wet for the ABC suspension system but this is unlikely this sounds like it was just a coincidence.
Since the vehicle isnt leaking any fluids and it sounds like it hasnt dropped this is most likely an ABC suspension sensor at fault like a level sensor possibly as these can be common to fail.
What needs to be done from here is to have the fault codes read out/checked in the suspension computer using a scan tool or dealers SDS machine (star diagnostic machine) to see what codes are set.Once this has been done any codes set will need diagnosed to locate and repair this fault here.
I suspect a sensor has failed or is failing needing replaced and having the codes checked will help locate the cause since there are several sensors and components on your model here.
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