ml350man

I have a 2009 ml350 just wondering where is the battery

Moto One

Check under the passenger seat!

Really!!!

Move it full up and forward to access.

Mark

dgiturbo

Also get your razor blade out and cut the carpet.
Really.
The cut outs are provided in the carpet area.

MAmendola

Not sure if you need to cut the carpet or not. I moved the passenger seat all the way forward and removed the plastic cover where the rear heat ducts are. I then remove the black plastic cover above the battery. I checked and the battery will lift out once the pos and neg terminals are removed. There are cutouts as mentioned if you do need to cut the carpet