Hopefully someone can help me

I have a 2001 e430 Benz I bought after I got the title and tags on it I did some errands and cleaned out the car previous owner had it a little messy inside,after I got back home I went into the house for awhile,and I had to go somewhere else,long story short I came out put key in the ignition and turned it to start the car you can hear the starter trying to engage but won't turn over but didn't it won't even crank you can hear the fuel pump come on a few seconds I've tested the starter relay with a volt meter and a good 12 volt battery and relay will click and tested the resistance and continuity and it's registering on the voltmeter 00.0 so it's good there are no blown fuses every thing works I have lights all the power accessories work the key will lock and unlock the doors panic button work I tried to start in park and neutral and still won't crank anybody have any ideals I looked on the internet and still haven't found anything and I'm at a loose on this one don't know what else to do I have a Benz that a paper weight now

What's the battery voltage when attempting to crank?

Problem solved thanks for your help appreciate it

Problem solved thanks for your help appreciate it

Post your solution for others benefit.

It was the battery low and I had to pair the key with the car I put a new battery in and put the key in the ignition and I put it on the start position for a few minutes without trying to start it after 2 minutes it made a beep sound and then I turned the key and it started rite up

So new car battery was the fix?

Yes sir