When the lift gate on your car doesn’t function properly, it can be an annoyance at best and a safety hazard at worst. But if your lift gate's sagging, like so many do after years of use, don’t panic!

I’m 80 years old and purchased my 2004 Toyota Corolla new. Now, I drive mostly around town, so it just has 145,000 miles on it, and I’ve been very diligent with the maintenance over the years. When I ...