Fed up trying to buy one with all the different variants so I made my own before the onset of autumn leaves and pine needles
Took about 1 hour and same technique could be used for other variants and models
https://photos.app.goo.gl/YD6vhKqpKXEik7wW6
Id recommend a diagnostic check to see if any fault codes flag up. I'm wondering if your battery is failing if it's old as a failing battery can throw up unusual electrical gremlins.