I own a 2001 Mercedes clk 320 battery is dead, mech key won't work can I jump start it or get power to start it?

some cars have a floor panel that will pull up.Then you will see a main positive cable you can connect jumper too,and ground to metal or brown ground wire

Well, first, the battery is not dead. You could have a poor electrical connection somewhere between the battery, starter, ignition switch, or another component of your start circuit, or possibly a failing starter solenoid, or ignition switch. Some electrical testing will be necessary to find the problem. A quick check the next time it won't crank over, is to pull the starter solenoid wire off and check for power on the wire when key is held in crank position. If power then, probably a failing starter solenoid. If no power there, then you have to diagnose the start circuit back through the ignition switch to the battery. Are all your battery and ground connections clean and tight? Starter connections? Use process of elimination, use care, and you'll find the problem.

ignition switch contact or starter motor given up the ghost ,try a jump start and see if that works ,do the lights go dim when you try to start it??if so then its a flat battery or a old battery thats just died on you.These vehicles do have a big ignition lock in the dash and these just dont go wrong like a VW but its possible?

trunk key locked in trunk

If you mean key will not turn in ignition,charge or jump start
Car has electronic ignition switch
If battery is low/flat it will not turn

Use emergency key inside remote,move clip on top of remote to remove blade
Insert in lock above rear no plate

plug a jump pack in to the cig lighter should do it

I purchased a MB CLK 320 and set the radio frequency and successfully put the freq in memory, however, the radio blinks tthe freq. Is this normal or do I have to enter another key to stop the radio from blinking?
Ed
Massachusetts

On the side of the smart key there is a mechanical key that slides out of one of the sides-There should be a little release lever retaining the mechanical key. It can be inserted into the trunk lock and turned to open the trunk. There are several other positions the key can be turned to place the trunk lock actuation in different modes- it should be in your owner's manual Hopefully I have been helpful

Hi, The battery is located in the trunk, under the trunk mat.