Will Medicaid find out about a second vehicle in my husband's name if it was bought from a private sale?

My husband bought a van because the number of kids we have increased by one. So now with 4 kids we have more room. The problem is my elderly father needed transportation badly, so I allowed him to use the car that's registered with Medicaid. The Medicaid vehicle is valued at zero because its excluded. Will the van that's worth about $4,500 show up and throw my kids and husband off of medicaid? My renewal came pre-populated with the original vehicle on it, plus a request for bank statements which is normal. My question is if I haven't bought or sold the vehicle in close to a year, will it show up on the database and will it matter at that price?