Why does GPS pop out of cig lighter every few seconds after plugging it in? on 1997 Mercury Cougar

It seems to think it is heating the cig lighter

Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
File a groove or two on the metal strip on each side of the plug just enough to hold it in place.
Works for me!