Dead Battery on MB c230, how do I open trunk?

If the battery is under the back seat like some models, charge battery.

Look for red pos jump point under hood hook pos jump cable to it neg to block ur car will get power from jump car n u can open trunk

did you try to go through by the trunk or open the hood by under neath to get at the battery to jump it to open with the remotes

Hi Your S class has two batteries. The smaller one is located in the engine bay, and the bigger one in the boot (trunk). No need to access any of them, simply open the door with key, insert key to start engine, you will notice that not all ignition lights will come on, but the engine WILL start, and the batteries will be recharged after a short while.

Well, the first answer is right but doesn't solve the problem and the second answer is wrong as the battery is in the trunk.

Just had the exact same problem. Battery dead on 2005 ion due to head lights left on which causes the key to stick in ignition.

Could not get to the battery in trunk because key stuck and power trunk switch also dead (no battery power, catch 22).

Solution: I hooked up a battery charger to the positive terminal under the hood by the fuse box and the negative to the engine block and charged it for 20 minutes. You could also jump it using the same terminals.

yes a new battery and i hope you have not messed up the fuses and alternator by jump starting!

THE HOOD IS MECHANICAL MEANING ITS JUST A WIRE PULLING A LATCH. HAVE SOMEONE PULL UP ON THE HOOD AS YOU PULL THE LEVER TO OPEN THE HOOD. IF THE BATTERY IS DEAD THEN GO TO THE REAR SEAT. ON BOTH SIDE RIGHT AND LEFT, JUST UNDERNEATH THE REAR SEATS ARE THESE LITTLE HOLES . FIT YOUR FINGERS IN THERE AND PRESS UP ON THE SEAT. DO THE SAME TO THE OTHER ISDE. THE BATTERY IS THERE UNDER ALL THAT STUFF. JUMP IT FROM THERE.

you will most likely need to call a Tow Truck or Locksmith.

I have the same issue (battery is completely dead in my 1998 Mercedes C280 and I can't pop open the trunk). I looked under the hood and have no idea where the positive charging post would be - can anyone help me find it? Thanks