If you can't turn off ec light by pushing the ec button you have a fault with your climate control system. Either you are low on freon or have a faulty sensor in the system.
97 $420ec swich not off
if you are talking about the 1997 slk 230 or 320 then no there is not. However there is a CD changer usually located in the trunk, but that was an upgrade
Why is my 97 mercedes e420 abs and esp warning light on?
On a 1997 Mercedes C180, the fog light switch is typically located on the left side of the dashboard, near the headlight switch. It may be a separate knob or a pull switch integrated with the headlight control. To activate the fog lights, you usually pull the switch out or turn it to the fog light symbol. Always consult the owner's manual for specific details related to your vehicle model.
The turn signal light can be accessed from the back of the turn signal light assembly. Push the lightbulb connector in and turn at the same time. The lightbulb will come out and can be changed.
Take hold of the turn signal light bald connector, push in and turn. The light bulb connector will come out with the light bulb. Remove the light bulb the same way you remove the connector. Reverse the process to install the new light bulb.
The abs light is on because you have a problem with the abs system. The light will remain on until the problem is fixed. Once fixed the light will reset itself.
Bad earth connectionat light cluster
There are pages of things that will turn the check engine light on. You need to have it checked for codes.
Have vehicle scanned to determine the problem
Pull out on the headlight switch, and then press the fog light switch button in.
You would need to remove the four screws on the front of the light remove the light from the back and change the bulb replace the light in the opposite way.