Check stop lamp when reversing
I just got done fixing my taillight after a failed cracked seal around the trunk allowed water to corrode the contact points around one of the bulbs. A fair bit of sanding later, it works as good as new. Easy, if that's your issue. It could just as easily be a burnt out bulb, but that would be obvious as soon as you pull it out, they are very easy to remove with no tool required.


