Change your battery
It is weird how a weak battery affects these cars. My passenger door started malfunctioning. I thought it might be a stuck switch (happened before) but a day later my driver's side door started acting the same. All other electric worked, car started and ran fine. Remembering how finicky Vipers were regarding batteries I looked in my records and saw that the last time I replaced the battery was a little over three years ago. Swapped it out yesterday and now all is good.
Just an FYI reminder.