Gearbox stuck in 1st gear

Is the battery new or old?

Have you ever spilled coffee or a drink in that area?

The transmission is computer controlled a dead battery would affect it. Did you get a jump start from somebody? If you jumped the car incorrectly you could cause damage to the electrical system and possibly damaged the transmission computer and even the ECU

Listen, If you have a late model c-class/clk and you can't shift it out of Park (P), try this... Open up the armrest/ storage compartment in the center console, behind the gear shifter. Pull out the black liner thing at the front of the compartment. You should now see a hole in the front wall of the compartment where you just pulled the liner out. insert a suitably sized screw driver until you feel it stop on something inside the hole. Now, grab the gear lever and pull it out of park while at the same time pushing the screw driver against the thing that stopped it. This should activate the emergency release allowing you to drive the car but be warned, if you don't take the car to a garage to get the problem fixed then you will have to do this every time you want to drive the car

The bottom line is this, before anyone spends too much money at a Dealership to have a shift problem looked at, check your battery. If it is weak (still may start car and lights are fine, but lacks sufficient volts/amps) it will send error codes to the computer and cause shifting (stuck in 1st or 2nd) problems. Change the battery and reset ALL of your error codes (usually requires a technician not just disconnecting your negative Batt. connection) and your car will be back in shape. If this doesn't work, then the problem could be with the transmission control module. Sometimes the trans. leaks fluid on the module and ruins the circuits. Usually, it is just the battery that causes this issue....

Thanks I've only had the car a couple of days, it's under warranty so will go to the dealer tomorrow Thanks for the advice

you bet

If My C240 use force to loading gear, it will not select gear again. What will I do