I have a 2005 Santa Fe with 50K miles. I have never had any problems. Lately it has been slow to start. I'll turn the key and at first it sounds like a low battery but the car starts. I have noticed that sometimes when it does this the clock will reset. My first thought was the battery but when I put it on a charger it showed a full charge. Does anyone have any ideas where to check next??[]

 

How old is your battery? A lot of wierd things could happen if your battery is at the end of its life. Sounds like it might be the orginal battery. Probably you should change it anyway now if it is. Go to Walmart for a battery, as Walmart batteries are rated "Best Buy" by Consumer Reports. Free installation.