My 2006 Hyundai Elantra has developed an intermittent starting short that seems to only occur in damp conditions. The intermittent starting short/fault seems to only occur in the mornings when the car has sat overnight outside. When I put the key in the ignition all the regular lights and bells will ding as normal, but when the key is then turned from “on” to “start” the entire electrical system cuts off. No interior lights, gauges, dash lights, nothing. However, if I pop the hood and then drop it, electrical power will be restored. I have been doing this for the past two weeks while I tried to determine the conditions of the fault. This morning however, this “fix” wouldn restore electrical power but the short occurred again in a cycle and the car never did start, despite trying the hood pop/drop method 10 times.
I had it towed to a shop this morning. When the car and I arrived, it started normally without issue. (of course!) I’m wondering if riding on the back of a tow truck dried out something or if that was immaterial. The person who looked at my car noticed a loose negative battery pole attachment and replaced the negative battery clamp. (His advice was to start small before needlessly pulling things off trying to find the fault.)
The test if this repair was really the cause will be tomorrow morning. I’m somewhat skeptical it was.
So, any ideas what could cause this or what course of action to pursue? The car has 94,000 miles and this is the first real issue it has had.
Thank you for any help you might be able to provide.