2007 ford expedition remote start issue. Went to use the remote and nothing happens. Replaced batteries in remote

I push button and nothing. No sounds or anything. I used it once this year and it worked. I dobt have a manual cause I bought used from private owner. I heard something about a valet mode. I don't want to mess anything up. Any simple step by step solutions I might try that won't mess anything up

Try pressing the lock button then press the remote start button twice. No joy, the car battery might be weak.

You can BUY an owner's manual from Ebay or Amazon.com. THEN READ IT!

Drive to the dealer… That's safe.

I would look in the owners manual.

Try pressing the lock button then press the remote start button twice.

You can DOWNLOAD the owner's manual from the internet.