I purchased a 2004 xc70. The previous owner reported driving it parking it for 6 months and it never started again. He did charge the battery.

The simplest things can cause the most trouble - I would start with a load test on the battery - may seem to be charged after using a battery charger, but can have plate connection problems causing failure under load.

Put a battery charger on the starter cable from
under the car & ground the black charger lead
That will charge it enough to open the door & hood
Thought every car has at least one key cylinder on
drivers door !!

The charging circuit/voltage maybe faulty.
I recommend you get an auto electrician to check out your alternator and charging regulator.

Battery location in 2004 Volvo XC70 is in the rear compartment under the storage area, next to the spare tire.

"position light" is a rear parking light which has failed or become unseated. Sometimes you can knock on the tail light housing and they will come back on, but they burn out shortly after regardless.

These and the low beam headlamps fail very frequently on these cars so you should become familiar with the replacement procedures.

Check the online manual:

https://www.customers.volvocars.com/owners/docs/2004/2004_XC70/04xc70_08a.htm#pg122

gasoline begins to get "stale" within 6 months of purchase. if you can drain the tank, refill with 1 ounce of marvel mystery oil and 5 gallons of 93 octane gasoline. make sure battery is fully charged, replace spark plugs.

replace the alternator,this is the problem,please rate thank you.

Hi, there will be diodes in the generator that are letting the power from the battery drain away through the parked times when not in use. to prove it charge the battery- then disconnect the negative terminal on the battery, connect 24 hours later and see if the battery as kept it charge, if so - fit new alternator, good luck.

You have 2 Problems, First problem batteries dying you have to make sure connections secure and alternator is charging your batteries (go to an Autozone or Discount advanced they will tell you). The Sputtering is either a bad SPARK PLUG or a damaged Cable going to the spark plug..Change them every 2 years.

loose battery connection, or you left your lights or something else on then you got your jump. on the drive home the battery had a chance to charge enough to start up 10 hours later.