Many truckers assume that if their engine won’t turn over, their only option is to jumpstart it. However, this isn’t always the case. There are a few things you should check before resorting to jumpstarting your engine. First, make sure the battery connections are secure and there is no corrosion. If the terminals are corroded, you won’t be able to get a good connection for the jumper cables. Next, check the fuses. A blown fuse could be the reason your engine won’t start. Finally, check the starter relay. If it’s defective, it may need to be replaced. If you’ve checked all of these things and your engine still won’t start, then you can go ahead and try to jumpstart it.