on the top of the battery
under r r seat
On top of the battery
Battery is under Rear passenger seat.
"w215"
check the trunk near the battery.
Check both battery terminals mine did the same thing but battery was 100% tightened terminals and no problems.... if corrosion on terminals a baking soda + water concoction removes corrosion very easily. usually a click is a dead battery or an incomplete circuit. Best of luck
Remove the positive terminal on the battery for 20-30 minutes and then replace the terminal on the battery and tighten the bolt very well. Also, for battery acid build-up on the terminals, pour several cups of boiling water over the battery terminals.
full synthetics
Group Size, H8 850 CCA
typically a clicking noise indicated that you don't have enough power from the battery to turn the starting motor. try cleaning the battery terminals with baking soda and water, then charging the battery. dirty terminals or a dirty battery top will drain the battery causing starting problems.
this is actually a very simple task. remove the bolts that hold the terminals on. slide them off and clean them with a wire brush. remove the nut that holds the metal bar that holds the battery in place. replace the battery. replace the nut, tighten it. replace the terminals and tighten them.
In the boot, under the carpet (ther's a flap)On the right hand side.