I have an 06 and sometimes when you try to start it is acts like the battery is dead. Turn the key a number of times with no luck. The starter make a grinding sound like the battery is dead, then you press the gas pedal down and try to start it and it starts like a brand new one! I am at a loss, it has 102,000 miles and we have had it for about 40,000 of those miles. This is the first problem we have had, any advise would be great, Thanks.