Clean the element/contacts with contact cleaner?
Sounds like a high resistance is making the wrong part hot.
I had a car (MX-5, I think) that would fire the fag lighter like a missile, which was scary. Had to bend the clamp tabs in a bit.
Nick
“I find myself irresistibly attracted to cars that nobody else buys. The NSX is a classic of the genre because nobody buys it and yet it’s a fantastic car. It’s got a wonderful compactness and simplicity and unpretentiousness to it. Honda rudely continues to make them whether we like it or not, even though there can be no commercial logic in doing so — I thoroughly admire that.” Rowan Atkinson