Are John Deere Riding Mower Keys Universal?

Having to take the time to mow your lawn can already be a drag, but now imagine this: You go to fire up your riding mower, and you discover you can't find the key. You could just get a replacement. John Deere sells them on its website, or you may be able to find them in stock at a local store. But maybe you've got another John Deere machine, or you know someone who will loan you their key. Could you just use that key to get your lawn mowed and deal with your missing key later? 

The answer manages to be both yes and no. By design, the keys are meant to restrict access to and secure John Deere equipment. According to the product listing, "A John Deere Ignition Key is a specially designed key used to start and operate compatible John Deere equipment by engaging the ignition system. It ensures secure access and control of the machinery, preventing unauthorized use and enhancing overall safety and security." However, because of how those keys are designed, you may still be able to use a loaner key from a friend.

If you look at the keys listed on the John Deere website, you will notice that many of them are fairly identical. The keys are actually universal across platforms, with only a handful of different styles. If you have the same mower as your neighbor or a family member, you might get lucky and be able to use theirs in a pinch. 

Users on Reddit have pointed this out, too. John Deere enthusiasts have shared over the years that their mowers all seem to use the same key for the most part. While some mowers, like the zero-turn and Gator lines, technically have different keys, this largely just comes down to the molded grip.

Ultimately, the safest and most reliable option is to obtain the correct key for your model. But if you have access to a key to a John Deere mower that is similar to the one you're trying to start, it could be worth trying. You might just get lucky.