I recently acquired a 2008 Mercury Mariner Hybrid from a trade. The previous owner told me that the vehicle sat for quite some time before the trade but was running normal prior. After some time going over the vehicle and a general fluid change and new battery it still won’t even begin to crank the engine. I’ve read some other forums talking about the hybrid battery in the back possibly being the culprit. I’m definitely not trying to do anything when it comes to disassembling or servicing the hybrid battery but is there any way for me to charge the hybrid battery or could it possibly be something else causing this problem. Any information would be greatly appreciated.