This video shows where the location of the jump start points and the main battery location on an R-class Mercedes-Benz. The battery is located under the front passenger seat in the R350 & R500. It is very important that you review your owner’s manual before jump starting or working on the battery, you must take some steps and precautions specific to this vehicle as outlined in the owner’s manual.
I would probably keep a jump start pack like this: http://amzn.to/1Ugsvbx on hand in case a battery dies on the R-Class and if i didn’t have another car handy to jump it or move the seat to change the battery.
